Clinical and psychological effects of excessive screen time on children

Physical (in)activity and screen-based media use of adolescents with juvenile idiopathic arthritis over time - data from a German inception cohort

BACKGROUND

Regular physical activity (PA) has been proven to help prevent non-communicable diseases and is beneficial for disease management in chronically ill populations. Physical inactivity and recreational screen-based media (SBM) use are related to poor health outcomes and common among youth. This study aimed to (1) investigate PA levels and recreational SBM use of adolescents with JIA over time and (2) compare these behaviours with those of their peers.

METHODS

Data from JIA patients and their peers enrolled in the inception cohort study ICON at 11 German centers were analyzed. Individuals aged 13 and over were followed prospectively with questionnaires concerning PA level, recreational SBM use, and health-related quality of life (HRQoL) at a two-year interval. Group by time interactions were analyzed using linear mixed models.

RESULTS

Data of 214 patients (mean age at first documentation 14.4 ± 0.9 years, female 63%) and 141 peers could be considered. At first documentation, patients were less physically active compared to their peers (p < 0.001). In contrast to their peers, patients' PA levels increased over time (OR 3.69; 95% CI: 1.01-13.50, p = 0.048). Mean screen time did not differ significantly between patients and peers (first documentation: 3.5 h vs. 3.0 h, p = 0.556; follow-up: 3.6 h vs. 3.3 h, p = 0. 969). During the observation period, male patients reported higher PA levels than female patients, but also higher screen time levels. While low socioeconomic status (SES) (OR 14.40; 95%-CI: 2.84-73.15) and higher cJADAS-10 score (OR 1.31; 95%-CI: 1.03-1.66) increased the likelihood for high SBM use (≥ 4.5 h/d), higher PedsQL psychosocial health score (OR 0.93; 95%-CI: 0.88-0.99) was associated with a decreased likelihood.

CONCLUSIONS

Adolescents with JIA become more physically active over the disease course and achieve comparable levels of PA and recreational screen time to their peers. However, the vast majority appear to be insufficiently physically active. Future interventions to promote healthy lifestyles should include gender and SES as important determinants to reach most vulnerable groups.

Association Between Television Viewing and Sensory Reactivity in Childhood: The Cross-Sectional InProS Study

BACKGROUND

Current evidence suggests a potential detrimental effect of increased television viewing on children's health, including sensory processing issues. Therefore, this study examined the association between television viewing time and atypical sensory reactivity (SR) in children aged from three to seven years.

METHODS

We evaluated data from the InProS cross-sectional study (n = 545). Daily television viewing was categorized into tertiles: ≤1.5, 1.5 to 2.5, and ≥2.5 hours. SR was evaluated using the Short Sensory Profile (SSP). Children with atypical SR were those with a global SSP score below 155, 30 for tactile sensitivity, 15 for taste/olfactory sensitivity, 13 for movement sensitivity, 27 for under-responsive/seeks sensation, 23 for auditory filtering, 26 for low energy/weak, and 19 for visual/auditory sensitivity. We used multiple Poisson regression models with robust variance to explore associations.

RESULTS

After adjusting for covariates, children who watched television 1.5 to 2.5 and ≥2.5 hours/day showed a higher prevalence of atypical global SR (prevalence ratio [PR]: 1.54; 95% confidence interval [CI]: 1.03 to 2.30; PR: 1.81; 95% CI: 1.19 to 2.76, respectively) and auditory filtering (PR: 1.50; 95% CI: 1.15 to 1.96; PR: 1.36; 95% CI: 1.01 to 1.83, respectively), compared with children who watched ≤1.5 hours/day. In addition, watching television ≥2.5 hours/day, compared with watching ≤1.5 hours/day, was associated with having atypical SR in movement sensitivity (PR: 1.73; 95% CI: 1.06 to 2.83), under-responsive/seeks sensation (PR: 1.31; 95% CI: 1.02 to1.69), and low energy/weak (PR: 2.02; 95% CI: 1.01 to 4.06).

CONCLUSIONS

The findings showed that television viewing ≥1.5 hours/day was associated with a higher prevalence of atypical SR in childhood. However, further longitudinal studies are required to confirm these results.

Family-Centered Treatment Program for Problematic Gaming and Excessive Screen Use in a Clinical Child and Youth Population (FAME): Protocol for a Feasibility Pilot Mixed Method Study

BACKGROUND

Screen time among children and adolescents has increased dramatically, raising concerns about its impact on development and mental health. While research highlights both potential benefits and risks, excessive use has been linked to issues like anxiety, depression, and gaming addiction. Despite growing concern, effective interventions are scarce. Recognizing the importance of family dynamics in child development, we propose a family-centered program to address problematic gaming and excessive screen use in a clinical population. By involving both children and parents, we aim to create a more comprehensive approach to prevention and treatment.

OBJECTIVE

This study aims to determine the possibility of distributing and evaluating a family-centered group program for problematic gaming and excessive screen use (FAME) in a clinical child and adolescent psychiatry (CAP) population. We will monitor the recruitment rate; track the retention and attendance rates of both parents and children; and assess whether each session's objectives are met, the content is delivered within the allotted time, and the necessary resources (eg, facilitators and materials) are available. Additionally, we will gather qualitative and quantitative feedback from participants through postprogram surveys and individual interviews with both children and parents.

METHODS

A total of 10 families with ongoing contact with CAP in Skåne, Sweden, will be recruited and offered participation in a family-centered group program targeting children aged 10-18 years with reported difficulties regarding screen gaming or screen use. The intervention to be tested is a newly developed, family-centered, psychoeducational, cognitive behavioral therapy-based intervention addressing both positive and negative aspects of screen use; setting boundaries; the connection between thoughts, feelings, and behaviors; conflict triggers; and sleep hygiene. The primary goal of the pilot study is to test the feasibility of the program, as well as recruitment and the analysis of participants' experiences with the program.

RESULTS

A total of 11 children and their parents were enrolled during first quarter of 2024. A 4-session pilot was delivered in first quarter of 2024, and the first results are expected in the third quarter of 2024.

CONCLUSIONS

The overarching goal of this pilot study is to determine the possibility of distributing and evaluating a family-centered group program for problematic gaming and excessive screen use (FAME) in a clinical CAP population. The insights gained from this study will guide our future research, which will focus on conducting a larger-scale evaluation of the intervention's impact on family screen time conflicts and inform future strategies for the implementation of family-centered interventions in child and youth clinics.

TRIAL REGISTRATION

ClinicalTrials.gov NCT06098807; https://clinicaltrials.gov/study/NCT06098807.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/56387.

The influence of early and current feeding practices, eating behaviors, and screen time on dietary patterns in Polish toddlers - A cross-sectional study

Early nutrition has an important influence on a child's proper health and development, and understanding factors that may be related to desirable dietary patterns is key to improving the diet of future generations. The aim of this study was to assess whether early and current feeding practices, eating behaviors, and screen time viewing are associated with toddlers' dietary patterns. A cross-sectional sample of 467 mothers of toddlers (aged 1 year to 3) was surveyed between 2020 and 2022. Food consumption was evaluated by the Food Frequency Questionnaire (FFQ). The k-means algorithm was used to define dietary patterns on the basis of data collected from the FFQ and mealtime environment patterns, based on the data about practices during meals consumption. The odds of following a prohealth dietary pattern among early feeding factors were lower when infants ate commercial complementary foods more often. Distracted mealtime environment pattern increased the odds of following a non-eaters pattern, and commercial complementary foods pattern increased the odds of following a processed pattern. Currently, the odds of following a processed dietary pattern were higher when children were not breastfed and had higher screen time. Toddlers who ate during distraction and were more fussy had lower odds of following a prohealth dietary pattern, whereas higher enjoyment of food and satiety responsiveness increased the odds. The results indicate the need to increase parents' awareness about the importance of early factors in establishing dietary patterns.

Associations of screen time with symptoms of stress, anxiety, and depression in adolescents

OBJECTIVE

To examine the associations between self-reported screen time and symptoms of stress, anxiety, and depression in adolescents.

METHODS

A cross-sectional study was conducted with 982 adolescents aged between 12 and 15 years, enrolled in public schools in Jacarezinho (PR), Brazil. Screen time was assessed by the question "Considering a typical day, how much time do you spend watching TV, playing videogame, using computer or smartphone?" The DASS-21 questionnaire (short form) was used to assess symptoms of depression, anxiety, and stress. Crude and adjusted analyses (age, sex, and maternal level of education) between screen time and mental disorders symptoms were performed using general linear regression models, with Poisson distribution, with significance level at p<0.05.

RESULTS

Higher depressive symptoms were observed in adolescents who reported screen time of 4-6 hours/day (PR 1.35, 95%CI 1.13-1.61) and ≥6 hours/day (PR 1.88, 95%CI 1.62-2.19), compared with their pairs with <2 hours/day. The same was observed for anxiety symptoms with screen time of 4-6 hours/day (PR 1.23, 95%CI 1.04-1.46) and ≥6 hours/day (PR 1.50, 95%CI 1.28-1.77); and stress, with 4-6 hours/day (PR 1.25, 95%CI 1.08-1.44) and ≥6 hours/day (PR 1.49, 95%CI 1.30-1.71), also compared with their pairs with <2 hours/day.

CONCLUSIONS

Screen time was positively associated with depressive, anxiety, and stress symptoms in adolescents. Special attention should be given to those who spend more than four hours a day in front of a screen.

Context of digital media use in early childhood: Factors associated with cognitive development up to 36 months of age

The influence of digital media on child cognitive development is a complex factor that goes beyond screen time. This study investigates the broader impact of digital media on child cognitive development, considering contextual variables such content type, parental mediation, and maternal mental health. Brazilian mothers (N = 212) of children 4-36 months old answered an online survey. Results showed that children's screen time increases with age. The model with unmediated use, non-educational content, and mother's screen time explains 28.7 % of children's screen time variance. Non-educational content and simultaneous screen media use explained 5.3 % of the variance in toddlers' cognitive development. Mothers with common mental disorders tended not to mediate their children's media use. We discuss the influence of caregivers' availability to mediate infants' and toddlers' digital media use and its impact on children's cognitive development. These findings underscore the necessity for educational and awareness campaigns aimed at fostering access to high-quality digital content for children during critical stages of development.

Socio-demographic and other factors contributing to excessive leisure screen time in preadolescent children

OBJECTIVES

Excessive screen use in early school age is associated with worsened health habits and negative child development in later age. We aimed to assess the time spent on modern and traditional screen-based devices and examine its associations with socio-demographic characteristics.

METHODS

This population-based cross-sectional observation study was conducted in Czechia, Slovakia and Finland between April and June 2021. Participants (N = 1,915) were parents/caregivers of children attending elementary school grades 1 to 3, selected by stratified random sampling. Children's daily leisure screen time (LST) based on parental reports was the main outcome. Descriptive statistics, mean comparison and linear regression analysis were used for the analysis.

RESULTS

The average daily LST was found to be as high as 3.5 hours and significantly associated with most socio-demographic variables. Eighty percent of children exceeded the threshold of two hours of LST per day, which was formerly introduced by the American Academy of Pediatrics. The most important predictor of LST in children was having their screen-based device(s) for their exclusive personal use (EPU). Linear regression with all predictors assessed together confirmed the significant effect of the screen-based devices' EPU, the child's sex and grade, the child's birth order and the parent's education, even when controlled for media parenting practices.

CONCLUSIONS

Given the widespread availability of smartphones for exclusive personal use among young children, the regulation of EPU and the reinforcement of effective media parenting practices, particularly in families with lower education and income, are critical public health strategies to mitigate the negative impact of excessive screen time on child development and overall well-being.

Current opportunities and challenges of immersive virtual reality for psychological research and application

Immersive virtual reality (iVR), that is, digital stereoscopic 360° scenarios usually presented in head-mounted displays, has gained much popularity in medical, educational, and consumer contexts in the last years. Recently, psychological research started to utilize the theoretical and methodological advantages of iVR. Furthermore, understanding cognitive, emotional, and behavioral processes in iVR similar to real-life is a genuinely psychological, currently understudied topic. This article briefly reviews the current application of iVR in psychological research and related disciplines. The review presents empirical evidence for opportunities and strengths (e.g., realism, experimental control, effectiveness of therapeutic and educational interventions) as well as challenges and weaknesses (e.g., differences in experiencing presence, interacting with VR content including avatars, i.e., graphical representation of a person). The main part discusses areas requiring additional basic research, such as cognitive processes, socio-emotional processes during social interactions in iVR, and possible societal implications (e.g., fraud, VR-addiction). For both research and application, iVR offers a contemporary extension of the psychological toolkit, offering new avenues to investigate and enhance core phenomena of psychology such as cognition, affect, motivation, and behavior. Still, it is crucial to exercise caution in its application as excessive and careless use of iVR can pose risks to individuals' mental and physical well-being.

Indian fathers' perceptions of young childcare and feeding - A qualitative study

The role of parents in fostering children's healthy habits is a robust area of research. However, most of the existing literature predominantly focuses on mothers' parenting practices. Given the emergence of nuclear, dual earning families and the recent surge in maternal employment in urban India, fathers' engagement in child rearing and feeding warrants attention. The purpose of this research was to document the views of Indian fathers about paternal parenting practices, with an emphasis on children's diet among other health behaviors. Thirty-three fathers of children aged 6-59 months from Kolkata, India took part in semi-structured interviews conducted either face-to-face or over Zoom/telephone in Hindi, Bengali, and English. The interviews were audio recorded, transcribed verbatim, and translated to English. The transcribed data were subjected to thematic analysis informed by the Template Analysis technique. Themes were detected using the NVivo software program. Overall, these Indian fathers played an important role in early childhood care and feeding as reflected in the following seven themes: (i) Involvement of fathers in various childcare activities; (ii) Implementation of responsive and non-responsive feeding practices; (iii) Concerns regarding fussy and slow eating; (iv) Concerns regarding excessive screen time; (v) Paternal vs maternal parenting; (vi) Barriers to routine engagement of fathers in childcare; (vii) Desire for more nutrition and health knowledge. This enhanced understanding of paternal parenting behavior supports the inclusion of fathers in future family-focused lifestyle interventions aimed at improving children's health outcomes, including their dietary habits.

Physical Activity Participation among Children and Youth with Mental Health Symptoms: Clinician Perspectives

BACKGROUND/OBJECTIVES

Physical activity supports mental health and well-being in children and youth. However, there are significant barriers to physical activity participation among individuals impacted by mental health disorders. This study investigates these barriers through the perspective of mental health clinicians who support children and youth.

METHODS

Fourteen mental health clinicians, including registered professional psychologists, psychotherapists, and social workers, were interviewed in a semi-structured format. Qualitative content analysis was performed to identify key themes, including both barriers and facilitators to physical activity.

RESULTS

Content analysis revealed that clinicians perceive both internal and external barriers and facilitators to their clients' participation in physical activity. Barriers included intrapersonal factors, such as the presence of depression, anxiety, or eating disorder symptoms; lack of motivation; and negative self-talk, as well as factors related to the influence of caregivers, financial limitations, screen time use, environmental and cultural factors, and lack of time. Facilitators included enjoyment of physical activity, knowledge about the benefits of physical activity, and caregiver participation.

CONCLUSIONS

Mental health clinicians demonstrated clear knowledge about the barriers to and facilitators of their clients' participation in physical activity. These findings provide valuable insights that can be used to support children and youth experiencing mental health difficulty to access the beneficial effects of physical activity.

The Mediating Role of Cardiorespiratory Fitness in the Association between a Negative Lifestyle and Poor Mental Health in Chilean Schoolchildren

BACKGROUND

A negative lifestyle has a reported relationship with psychological problems and deteriorated well-being. However, there is little information regarding the mediating role of cardiorespiratory fitness (CRF) in this relationship.

OBJECTIVES

The objectives of the present study are twofold: first, to investigate the association between negative lifestyle, physical self-concept (PSC), and depression, and second, to assess the potential mediating role of CRF in this complex relationship.

METHODS

This cross-sectional study included 612 schoolchildren aged between 9 and 14 years from the Araucanía region (southern Chile). CRF was measured using the Leger test, and lifestyle, depression, and PSC were measured using validated questionnaires.

RESULTS

A negative lifestyle reported an inverse association with PSC (p < 0.001) and a positive association with depression levels (p < 0.001). The mediation analysis showed that CRF was positively related to PSC (p < 0.001) and inversely related to depression (p = 0.001); besides, the indirect effect CRF acted as a partial mediator in the association between a negative lifestyle and PSC (indirect effect = -1.15; SE = 0.01; 95% CI, -1.87, -0.55) and depression levels (indirect effect = 0.22; SE = 0.08; 95% CI, 0.08, 0.38).

CONCLUSION

In conclusion, CRF in schoolchildren played a potential mediating role in the association between a negative lifestyle and depression and PSC.

Associations of 24-hour movement behaviors with emotional and behavioral problems among Chinese adolescents

PURPOSE

The role of adherence to the recommendations for 24-hour movement behaviors (24-HMB), including physical activity (PA), screen time (ST), and sleep duration (SLP), in relation to emotional and behavioral problems in Chinese adolescents remains uncertain. This study aimed to investigate these associations and explore potential sex differences.

METHODS

This school-based cross-sectional study included 15,071 Chinese adolescents with a mean age of 14.53 (SD: 1.65) years. Data on emotional and behavioral problems and 24-HMB (including PA, ST, and SLP) were collected. Analysis was performed using general linear mixed models, with additional sex-stratified analyses conducted.

RESULTS

The number of 24-HMB recommendations met was negatively associated with total difficulties (β estimate=-0.96, 95% CI: -1.07 to -0.85) and positively related to prosocial behavior (β estimate = 0.41, 95% CI: 0.37 to 0.46) among adolescents. Compared with none of the recommendations met, meeting all recommendations (total difficulties: β estimate=-2.98, 95% CI: -3.41 to -2.55; prosocial behaviors: β estimate = 1.05, 95%CI: 0.87 to 1.24) demonstrated the strongest association with both difficulties and prosocial behaviors, followed by meeting recommendations for PA + ST (total difficulties: β estimate=-2.15, 95% CI: -2.41 to -1.90; prosocial behaviors: β estimate = 0.98, 95% CI: 0.87 to 1.09). These associations were consistently significant in both boys and girls.

CONCLUSION

Adherence to more 24-HMB recommendations, particularly meeting all recommendations or combined PA + ST recommendations, could improve emotional and behavioral well-being among adolescent girls and boys. The significance of balanced movement behaviors for promoting adolescent mental health merits increased attention.

Impact of Elevated Screen Time on School-Age Adolescents During the COVID-19 Pandemic: An Analytical Study

INTRODUCTION

The rise in digital technology use, especially during the COVID-19 pandemic, has heightened concerns about extended "screen time" (ST) among adolescents. Excessive screen use is linked to negative physical and cognitive effects, yet digital media also offers educational and social advantages. Cultivating healthy digital habits is crucial as technology continues to evolve.

METHODOLOGY

This cross-sectional study was conducted between July and August 2022 among school-going adolescents and a total of 221 participants were assessed through questionnaires, employing statistical analysis.

RESULTS

In the current study, all participants fell within the 16-18 year age group, with 114 (51.6%) being male and 107 (48.4%) female. The majority 209 (94.5%) identified as Hindu, while the rest were from Muslim and Christian communities. Most participants, both male and female, resided in urban areas, 140 (63.3%) were pursuing Class 12, and 73 (33.1%) were pursuing Class 11. Mobile phones were the most commonly owned devices, followed by desktops or laptops and tablets. Males generally spend more time on these devices than females. Notably, 168 (76.01%) adolescents exceeded the recommended 2-hour daily screen time limit set by the American Academy of Pediatrics (AAP), with 92 (80.7%) males more likely to do so than 76 (71%) females. The study found a significant link between increased screen time, reduced physical activity, and academic performance, while no association was observed for behavioral risk factors.

CONCLUSION

There is increased digital device use among youth, with many exceeding recommended screen time limits, particularly males. This was significantly linked to reduced physical activity and academic decline, highlighting the need for further research and balanced digital use.

The impact of family factors and communication on recreational sedentary screen time among primary school-aged children: a cross-sectional study

BACKGROUND

Childhood obesity is increasingly recognized as a major public health challenge worldwide, and excessive sedentary screen time is emerging as a key risk factor. This study aimed to assess the recreational screen sedentary time of Chinese primary school-aged children and investigate the relationship between screen-related family factors and the outcome variable.

METHODS

Our study used data from a cross-sectional survey collected from fifth-grade students and their parents in Beijing, China, from April to May 2018 (n = 2,373). The questions included basic demographic information, family socioeconomic status, students' and parents' sedentary and exercising habits, within-family communicational factors, and health belief patterns. The recreational screen sedentary time of the children was compared across demographic groups. The study employed multivariate linear regression models to examine associations between children's screen time and various family factors, as well as the moderating effect of overall family communication.

RESULTS

Our findings revealed an average daily recreational screen sedentary time of 2.4 h among participants. Screen time significantly varied across demographic categories, including children's sex, age, residence, parents' education, household income, family size, and primary family member. After adjustment, the proportion of child-owned digital devices (p < 0.01), child's personal room (p < 0.05), family screen-viewing together (p < 0.01), and parental screen time (p < 0.01) were positively related to children's recreational sedentary screen time. Parental restrictions on screen time (p < 0.001) and attitudes toward reducing sitting time (p < 0.01) were correlated with a decrease in children's screen time. The overall family communication environment significantly moderated the effects of parental practice of restricting children's screen time (p < 0.001), positive reinforcement by parents (p < 0.05), and parents' recreational sedentary screen time (p < 0.001).

CONCLUSIONS

Our findings underscored the significance of family dynamics, parental practices, and communication in shaping children's screen time behaviors, providing valuable insights for tailored interventions and strategies to reduce childhood obesity.

Individual and contextual determinants associated with traumatic dental injuries in children eight to ten years of age: a multilevel analysis

OBJECTIVE

Investigate individual and contextual determinants associated with traumatic dental injuries in schoolchildren.

METHODS

A cross-sectional study with 739 pairs of parents and children. Parents answered a sociodemographic questionnaire, the Family Adaptability and Cohesion Evaluation Scale and a questionnaire on the child's use of electronic devices. Examinations of the children were conducted at the school by calibrated examiners using the diagnostic criteria proposed by Andreasen. Contextual variables of the school were also collected. Multilevel Poisson regression for complex samples was performed (p < 0.05).

RESULTS

The individual factors associated with the outcome were children of single parents (PR = 2.33; 95% CI: 1.79-2.66), practice of sports (PR = 2.46; 95% CI: 1.70-3.22), the daily use of electronic devices (PR = 1.78; 95% CI: 1.31-1.81), more than 2 h per day of screen time (PR = 3.84; 95% CI: 1.94-4.28) and chaotic family adaptability (PR = 4.22; 95% CI: 3.44-4.99). The contextual variables were studying at a public school (PR = 1.77; 95% CI: 1.02-3.05) and the presence of rigid floor in the school courtyard (PR = 1.99; 95% CI: 1.15-3.15).

CONCLUSION

Individual determinants, studying at a public school and the presence of rigid floor in the school courtyard were associated with traumatic dental.

Association between screen time and self-reported balance disorders in middle-aged and older adults: national health and nutrition examination survey

BACKGROUND

Balance disorders can give rise to sensations of instability, lightheadedness, vertigo, disequilibrium, or syncope, ultimately leading to grave medical, physical, emotional, and societal ramifications. These conditions are highly prevalent among individuals aged 40 and above. Screen time encompasses activities associated with television viewing, video game playing, and non-work-related computer usage. Prolonged screen exposure may engender a spectrum of health issues and even elevate overall mortality rates. However, the available evidence on the potential link between excessive screen time and balance dysfunction remains limited.

AIMS

The primary aim of this study was to explore the possible association between prolonged screen exposure and impaired balance function.

METHODS

This cross-sectional study utilized data from participants who completed a comprehensive questionnaire in the NHANES database between 1999 and 2002, all of whom were aged over 40 and under 85 years. Participants' screen time was categorized into two groups (< 4 h/d and  ≥4 h/d) for subsequent data analysis. Logistic regression, combined with propensity score matching (PSM), was employed to investigate the correlation between screen time and balance disorders.

RESULTS

A total of 5176 participants were enrolled in this study, comprising 2,586 men and 2,590 women, with a prevalence rate of balance disorders at 25.7% (1331/5176). The incidence of balance disorders was found to be significantly higher among individuals who spent 4 hours or more per day on screen time compared to those with less screen time (P<0.001). Multivariate logistic analysis conducted on the unmatched cohort revealed a significant association between screen time and balance disorders, with an odds ratio (OR) 1.8 (95%CI 1.57 ∼ 2.05). These findings remained consistent even after adjusting for confounding factors, yielding an OR 1.43 (95%CI 1.24 ∼ 1.66). Moreover, the association persisted when employing various multivariate analyses such as propensity score matching adjusted model, standardized mortality ratio weighting model and pairwise algorithmic model; all resulting in ORs ranging from 1.38 to 1.43 and p-values < 0.001.

CONCLUSIONS

After controlling for all covariates, screen time (watching TV, playing video games, and using computers outside of work) was associated with balance dysfunction among middle-aged and older adults. This finding may offer a possible idea for the prevention of dizziness and balance disorders. Nevertheless, additional research is imperative to further validate these results.

Effects of sensory overstimulation in postpartum rats

Research in rodents has shown that exposure to excessive early life audiovisual stimulation leads to altered anxiety-like behaviors and cognitive deficits. Since this period of stimulation typically begins prior to weaning, newborn rodents receive sensory overstimulation (SOS) as a litter within their home cage while the dam is present. However, the effects of SOS during the postpartum period remain unexplored. To this end, we adapted an SOS paradigm for use in rats and exposed rat dams and their litters from postpartum days (PD) 10-23. Maternal observations were conducted to determine whether SOS produced changes in positive and/or negative maternal behaviors. Next, we assessed changes in anxiety-like behavior and cognition by testing dams in the elevated zero maze, open field, and novel object recognition tests. To assess potential effects on HPA-axis function, levels of the stress hormone corticosterone (CORT) were measured approximately 1-week after the cessation of SOS exposure. Our results indicate increased nursing and licking in SOS dams compared to controls, although SOS dams also exhibited significant increases in pup dragging. Moreover, SOS dams exhibited reduced self-care behaviors and nest-building compared to control dams. No differences were found for anxiety-like behaviors, object recognition memory, or CORT levels. This study is the first to assess the impact of postpartum SOS exposure in rat dams. Our findings suggest an SOS-induced enhancement in positive caregiving, but limited impact in all other measures.

Early-life family and school impacts on adolescent conduct problems: A path analysis

Limited research has been conducted to examine the factors during early childhood that may contribute to conduct problems in later stages of life. This study aimed to investigate the relationship between family and school environments during early childhood and conduct problems in adolescence. In Wave 1 (W1), the study recruited 502 participants, aged 5-6 years, from Hong Kong local kindergartens, with 51.4% boys. One of their parents provided information about family socioeconomic status (SES), parent-child recreational activities, and child screen time, whereas the class teacher rated their school readiness using the Chinese version of the Early Development Instrument. Data on the number of special facilities were obtained from the kindergartens. In Wave 2 (W2), the same parents of 395 participants were asked about their involvement in their children's education. Finally, in Wave 3 (W3), the parents of 206 participants completed the Conduct Problem scale of the Strength and Difficulties Questionnaire to evaluate the level of conduct problems in the participants. The results of the path analysis revealed that higher W1 family SES was associated with fewer W3 conduct problems through an increase in W1 and W2 parental involvement in children's learning and play activities. Findings have implications for understanding the impact of early-life family and school environments on adolescent conduct problems. Early childhood interventions that promote family resources and positive parent-child interactions have the potential to reduce adolescent conduct problems.

Evidence for Changes in Screen Use in the United States During Early Childhood Related to COVID-19 Pandemic Parent Stressors: Repeated Cross-Sectional Study

BACKGROUND

The COVID-19 pandemic transformed the home lives of many families in the United States, especially those with young children. Understanding the relationship between child and parent screen time and family stressors exacerbated by the pandemic may help inform interventions that aim to support early child development.

OBJECTIVE

We aim to assess the changing relationship between family screen time and factors related to pandemic-induced remote work and childcare or school closures.

METHODS

In the spring of 2021 we administered a survey, similar to one administered in the spring of 2019, to a national sample of parents of young children (aged 6 to 60 months). Using iterative sampling with propensity scores, we recruited participants whose sociodemographic characteristics matched the 2019 survey. Participants were aged >18 years, proficient in English or Spanish, and residing in the United States. The main outcomes were changes in child screen time (eg, mobile phone, tablet, computer, and television) and parenting technoference, defined as perceived screen-related interference with parent-child interactions. Additional survey items reported pandemic-related job loss, and changes to work hours, work location, caregiving responsibilities, day care or school access, and family health and socioeconomic status.

RESULTS

We enrolled 280 parents, from diverse backgrounds. Parents reported pandemic-related changes in child screen time (mean increase of 1.1, SD 0.9 hours), and greater parenting technoference (3.0 to 3.4 devices interfering per day; P=.01). Increased child screen time and parenting technoference were highest for parents experiencing job loss (mean change in child screen time 1.46, SD 1.03; mean parenting technoference score 3.89, SD 2.05), second highest for working parents who did not lose their job (mean change in child screen time 1.02, SD 0.83; mean parenting technoference score 3.37, SD 1.94), and lowest for nonworking parents (mean change in child screen time 0.68, SD 0.66; mean parenting technoference score 2.66, SD 1.70), with differences significant at P<.01. School closure and job loss were most associated with increased child screen time during the pandemic after controlling for other stressors and sociodemographic characteristics (d=0.52, P<.001; d=0.31, P=.01). Increased child screen time and school closure were most associated with increased parenting technoference (d=0.78, P<.001; d=0.30, P=.01).

CONCLUSIONS

Work and school changes due to the COVID-19 pandemic were associated with increased technology interference in the lives of young children. This study adds to our understanding of the interaction between technology use at home and social factors that are necessary to support early childhood health and development. It also supports possible enhanced recommendations for primary care providers and childcare educators to guide parents in establishing home-based "screen time rules" not only for their children but also for themselves.

Associations of screen use with cognitive development in early childhood: the ELFE birth cohort

BACKGROUND

The associations of screen use with children's cognition are not well evidenced and recent, large, longitudinal studies are needed. We aimed to assess the associations between screen use and cognitive development in the French nationwide birth cohort.

METHODS

Time and context of screen use were reported by parents at ages 2, 3.5 and 5.5. Vocabulary, non-verbal reasoning and general cognitive development were assessed with the MacArthur-Bates Communicative Development Inventory (MB) at age 2, the Picture Similarities subtest from the British Ability Scales (PS) at age 3.5 and the Child Development Inventory (CDI) at ages 3.5 and 5.5. Outcome variables were age-adjusted and standardized (mean = 100, SD = 15). Multiple imputations were performed among children (N = 13,763) with ≥1 screen use information and ≥1 cognitive measures. Cross-sectional and longitudinal associations between screen use and cognitive development were assessed by linear regression models adjusted for sociodemographic and birth factors related to the family and children, and children's lifestyle factors competing with screen use. Baseline cognitive scores were further considered in longitudinal analysis.

RESULTS

TV-on during family meals at age 2, not screen time, was associated with lower MB scores at age 2 (β [95% CI] = -1.67 [-2.21, -1.13]) and CDI scores at age 3.5 (-0.82 [-1.31, -0.33]). In cross-sectional analysis, screen time was negatively associated with CDI scores at ages 3.5 (-0.67 [-0.94, -0.40]) and 5.5 (-0.47 [-0.77, -0.16]), and, in contrast, was positively associated with PS scores (0.39 [0.07, 0.71]) at age 3.5. Screen time at age 3.5 years was not associated with CDI scores at age 5.5 years.

CONCLUSIONS

Our study found weak associations of screen use with cognition after controlling for sociodemographic and children's birth factors and lifestyle confounders, and suggests that the context of screen use matters, not solely screen time, in children's cognitive development.

Prospective association of screen time with binge-eating disorder among adolescents in the United States: The mediating role of depression

OBJECTIVE

Screen time has been reported to be associated with binge-eating disorder (BED) among adolescents in the US; however, potential mediators remain unclear. This study aimed to evaluate depression symptoms as a mediator of the prospective association between screen time and BED.

METHOD

We utilized data from 9465 children (aged 9-11 years at baseline) from the Adolescent Brain Cognitive Development (ABCD) study (2016-2021). A generalized structural equation model was used to examine the prospective association between average daily screen time at baseline and BED at year 2, adjusting for baseline BED diagnosis, and other potential covariates (e.g., age, sex, and income). Mediation was examined using bias-corrected (BC) 95% confidence intervals for the indirect effect of baseline screen time on year 2 BED through depression symptoms (change from baseline to year 1).

RESULTS

One hundred and one participants (42.7% male, 49.4% racial/ethnic minority) met the criteria for BED in year 2. Participants were 9.9 years of age on average at baseline, 51.3% identified as male, and 43.1% identified as a racial/ethnic minority. Adjusting for covariates, screen time was prospectively associated with BED (OR = 1.09, 95% CI [1.03, 1.14], p = .005). Depression symptoms (B = .19, BC 95% CI [0.10, 0.28]) partially mediated (9.2%) the prospective association between screen time and BED.

DISCUSSION

Among US adolescents, higher baseline screen time was prospectively associated with BED diagnosis at year 2, and this relationship was partially mediated by increased depression symptoms. Preventive approaches targeting high screen use may have utility for reducing BED risk among adolescents.

PUBLIC SIGNIFICANCE

Among U.S. adolescents, higher screen time was prospectively associated with the incidence of BED. This association was partially mediated by the change in depressive symptoms. Preventive approaches targeting high screen use may have utility for reducing BED risk among adolescents.

Association between Screen Time and Sociodemographic Factors, Physical Activity, and BMI among Children in Six European Countries (Feel4Diabetes): A Cross-Sectional Study

Screen time among children in most European countries is notably high and is influenced by various sociodemographic and other factors. Our study aimed to explore the associations between parents' sociodemographic characteristics, socioeconomic status, body mass index (BMI), physical activity, risk status for type 2 diabetes, and their children's BMI, physical activity, and screen time. The data were sourced from the 2016 Feel4Diabetes study, involving 12,280 parents and 12,211 children aged 6-9 years (average age 8.21 years) in a cross-sectional study design. We used a logistic regression model to identify potential factors associated with children's screen time. The results showed that mothers with tertiary education (OR = 0.64; 95%CI = 0.49-0.82; p < 0.001), the middle age group (45-54 years) (OR = 0.81 95%CI = 0.66-0.98; p = 0.033), and families with higher incomes (middle-OR = 0.85; 95%CI = 0.75-0.97; p = 0.014; high-OR = 0.8; 95%CI = 0.69-0.93; p = 0.003) were associated with a decreased chance of children spending more than 2 h/day in front of the screen. In contrast, maternal overweight/obesity (OR = 1.15; 95%CI = 1.03-1.29; p = 0.013) and lower physical activity in children were linked to an increased likelihood of more than 2 h of screen time per day. Our findings suggest that targeted interventions should be developed to mitigate excessive screen time, particularly focusing on low-income families and mothers with low educational levels.

Social Media Posts from Friends during Late Adolescence as Predictors of Young Adult Physical Health

Although an increasing body of literature has linked social experiences to physical health, research has yet to consider how specific aspects of social experiences taking place on social media during late adolescence may predict future physical health outcomes. This study thus examined qualities of social media posts received from peers at age 21 as predictors of participants' physical health (e.g., Interleukin-6 (inflammation), sleep problems, problems with physical functioning, and BMI) at age 28. Participants included 138 youth (59 men and 79 women); 57% of participants identified as White, 30% as Black/African American, and 13% as from other or mixed racial/ethnic groups. Posts from friends and participants at age 21 characterized by social ties predicted lower levels of future physical health problems, whereas socially inappropriate "faux pas" posts that deviated from peer norms by friends predicted higher levels of physical health problems at age 28. These associations were found after accounting for factors typically associated with physical health outcomes, including participants' baseline social competence, internalizing and externalizing symptoms, alcohol use, observed physical attractiveness, and history of prior hospitalizations. The results of this study suggest the importance of both achieving social integration with peers online and adhering to peer norms in the online domain as key predictors of future physical health.

Nocturnal Smartphone Use Affects Sleep Quality and Cognitive and Physical Performance in Tunisian School-Age Children

Nocturnal smartphone use emits blue light, which can adversely affect sleep, leading to a variety of negative effects, particularly in children. Therefore, the present study aimed to determine the effect of acute (AC) (one night) and repeated (RC) (five nights) nocturnal smartphone exposure on sleep, cortisol, and next-day performance in Tunisian children. Thirteen participants (seven girls and six boys, age 9 ± 0.6, height 1.32 ± 0.06, weight 34.47 ± 4.41) attended six experimental nights. The experiment started with a baseline night (BL) with no smartphone exposure, followed by repeated sessions of nocturnal smartphone exposure lasting 90 minutes (08:00 pm-09:30 pm). Actigraphy; salivary cortisol; the Stroop test (selective attention); choice reaction time (CRT); N-back (working memory); counter-movement jump (CMJ), composed of flight time (time spent in the CMJ flight phase) and jump height; and a 30 m sprint were assessed the morning after each condition. Both AC and RC shortened total sleep time (TST) (p < 0.01), with a greater decrease with RC (-46.7 min, ∆% = -9.46) than AC (-28.8 min, ∆% = -5.8) compared to BL. AC and RC significantly increased waking after sleep onset (3.5 min, ∆% = 15.05, to 9.9 min, ∆% = 43.11%) and number of errors made on the Stroop test (1.8 error, ∆% = 74.23, to 3.07 error, ∆% = 97.56%). Children made 0.15 and 0.8 more errors (∆% = 6.2 to 57.61%) and spent 46.9 s and 71.6 s more time on CRT tasks (∆% = 7.22 to 11.11%) with AC and RC, respectively, compared to BL. The high-interference index of the Stroop task, CMJ performance, and 30 m sprint speed were only altered (p < 0.01) following RC (0.36, Δ% = 41.52%; -34 s, Δ% = -9.29%, for flight time and -1.23 m, -8.72%, for jump height; 0.49 s, Δ% = 6.48, respectively) when compared to BL. In conclusion, one- or five-night exposure to smartphones disturbed the children's sleep quality and their performance, with more pronounced effects following RC.

Infant screen media and child development: A prospective community study

The current study examined longitudinal associations between early screen media exposure (assessed at 6, 12, and 24 months) and the child's motor and language/communication development at the ages of 24 and 36 months. We also aimed to study whether these associations varied by socioeconomic status (SES). Participants were 179 parent-infant dyads, recruited from well-baby clinic services during routine visits. Child development measures included standardized measures of developmental milestones as assessed by professionals and referral data to child developmental centers. Both measures were retrieved from the official health maintenance organization records by an expert in child development. Results indicated that screen exposure at 6 and 12 months was associated with a higher risk for language/communication deficits at 36 months in children with moderate or high SES but not in children with low SES. Our findings are consistent with existing literature demonstrating cross-sectional and longitudinal associations between early screen exposure and language development deficits. Given that media use practices and motivations vary among families from different backgrounds, further investigation of the interaction between SES and screen exposure is needed.

The utility of behavioral biometrics in user authentication and demographic characteristic detection: a scoping review

BACKGROUND

Objective measures of screen time are necessary to better understand the complex relationship between screen time and health outcomes. However, current objective measures of screen time (e.g., passive sensing applications) are limited in identifying the user of the mobile device, a critical limitation in children's screen time research where devices are often shared across a family. Behavioral biometrics, a technology that uses embedded sensors on modern mobile devices to continuously authenticate users, could be used to address this limitation.

OBJECTIVE

The purpose of this scoping review was to summarize the current state of behavioral biometric authentication and synthesize these findings within the scope of applying behavioral biometric technology to screen time measurement.

METHODS

We systematically searched five databases (Web of Science Core Collection, Inspec in Engineering Village, Applied Science & Technology Source, IEEE Xplore, PubMed), with the last search in September of 2022. Eligible studies were on the authentication of the user or the detection of demographic characteristics (age, gender) using built-in sensors on mobile devices (e.g., smartphone, tablet). Studies were required to use the following methods for authentication: motion behavior, touch, keystroke dynamics, and/or behavior profiling. We extracted study characteristics (sample size, age, gender), data collection methods, data stream, model evaluation metrics, and performance of models, and additionally performed a study quality assessment. Summary characteristics were tabulated and compiled in Excel. We synthesized the extracted information using a narrative approach.

RESULTS

Of the 14,179 articles screened, 122 were included in this scoping review. Of the 122 included studies, the most highly used biometric methods were touch gestures (n = 76) and movement (n = 63), with 30 studies using keystroke dynamics and 6 studies using behavior profiling. Of the studies that reported age (47), most were performed exclusively in adult populations (n = 34). The overall study quality was low, with an average score of 5.5/14.

CONCLUSION

The field of behavioral biometrics is limited by the low overall quality of studies. Behavioral biometric technology has the potential to be used in a public health context to address the limitations of current measures of screen time; however, more rigorous research must be performed in child populations first.

SYSTEMATIC REVIEW REGISTRATION

The protocol has been pre-registered in the Open Science Framework database ( https://doi.org/10.17605/OSF.IO/92YCT ).

Change in screen time of preschool children according to parental attitudes during the COVID-19 pandemic with an online survey

The relationship between the change in the screen time of preschool children according to both parent-child characteristics and parental attitudes was investigated in an online study involving 403 mothers. Mothers completed a questionnaire on baseline characteristics and Parent Attitude Scale. Multiple logistic regression and generalized linear models revealed the associations. Change in screen time was grouped as "increase" and "no increase". 70% stated an increase in the screen time during the pandemic period. The overprotective score was low in the group with increased screen time after adjusting parental age, education, and working status, family type, number of the children, the enrolled child's age, gender, daily screen time before the pandemic, and caregiver of the child. The child having longer screen time also had higher risk for the history of an increase in screen time in the lockdown period. This situation shows a need for parental guidance for healthy screen use.

Parental practices and children's lifestyle correlates of childhood overweight/obesity in Europe: The Feel4Diabetes study

BACKGROUND

Parental influences on children's eating and physical activity (PA) and consequently on their weight are fundamental. The present study aimed to identify the predominant correlates of childhood overweight/obesity among a variety of parental practices and children's lifestyle indices in a large sample of children in Europe.

METHODS

Families from low socio-economic status regions were recruited through schools, located in six European countries (Belgium, Finland, Greece, Spain, Bulgaria and Hungary). Seven thousand three hundred ninety-seven children 4-12 years old and their parents were selected using the FINDRISC-questionnaire. Parental practices assessed included parental role modelling, permissiveness and reward. Children's dietary intake and lifestyle behaviours were assessed through parent-reported questionnaires.

RESULTS

Regarding parental practices, it was revealed that being sometimes (odds ratio [OR] = 1.26; 95% confidence interval [CI] = 1.10-1.43) or rarely (OR = 1.43; 95% CI = 1.21-1.69) physically active with the child was associated with greater overweight/obesity risk, whereas rare permission of computer/mobile/tablet (OR = 0.81; 95% CI = 0.67-0.98) and sometimes (OR = 0.77; 95% CI = 0.68-0.88) or rare (OR = 0.77; 95% CI = 0.66-0.91) reward with PA were associated with lower risk. Regarding children's lifestyle factors, consuming > 3 cups/week fresh fruit juices (OR = 1.28; 95% CI = 1.13-1.45), skipping breakfast (OR = 1.37; 95% CI = 1.17-1.61), absence of 1 h of daily PA (OR = 1.40; 95% CI = 1.24-1.58) and increased daily screen time (ST) (OR = 1.23; 95% CI = 1.09-1.39) were associated with greater overweight/obesity risk. All the variables were adjusted for maternal education, child's sex and age.

CONCLUSIONS

These findings emphasize the necessity of family-centered approaches in health promotion and obesity prevention programs for children. Such programs should focus on parents as the primary role models in exerting positive influence and encouraging healthy eating habits, PA, and ST behaviors in their children, which in turn, may have a substantial impact on children's overall weight status.

The Impact of Screen Time on Sleep Patterns in School-Aged Children: A Cross-Sectional Analysis

BACKGROUND

In a world filled with technology, there's concern about the impact of screen time on children and teenagers. A recent study of 11,875 children aged nine to 10 in the US explored how screen time affects mental health, behaviour, school performance, sleep, and friendships. The results indicate that more screen time is mildly linked to worse mental health, more behaviour problems, lower academic performance, and poorer sleep, but slightly better peer relationships. However, these connections were weak, with socioeconomic status (SES) having a stronger influence on these outcomes. The study doesn't prove that screen time causes these issues, suggesting that increased screen time might not be directly harmful to children in this age group. The research adds to the understanding of how screen time impacts children's well-being and highlights the importance of promoting healthy habits. Our study aims to add to this literature by examining how screen time impacts sleep quality, dream recall, and academic performance in school-aged children. Understanding the potential consequences of screen time is crucial for promoting healthy habits and ensuring the overall well-being of children. Our research seeks to provide further insights into the relationship between screen time and key aspects of children's lives as its prevalence continues to rise.

METHODS

The research incorporates a cohort of 1000 school-aged children, bifurcated evenly into two categories based on their daily screen exposure: a low screen time group (less than one hour daily, n = 500) and a high screen time group (over three hours daily, n = 500). The study probes into the correlation between screen time and various health parameters, such as sleep patterns, dream recall, and academic prowess.

RESULTS

The analysis showed that children with low screen time had better sleep efficiency (90% vs. 75%), more frequent dream recall (70% vs. 30%), fewer nocturnal awakenings (0.5 vs. 1.5 times weekly), less daytime sleepiness (20% vs. 60%), and higher physical activity levels (60 vs. 30 minutes per day) compared to those with high screen time. They also had less weekend sleep variability (1.2 hours) and a lower risk of circadian rhythm disturbances (20% increased risk in the high screen time group). Additionally, a screen-free bedroom was more common in the low screen time group (85% vs. 30%), and parental involvement in sleep routines was higher (90% vs. 40%). Academically, the low screen time group achieved higher grades ('A' to 'A+' vs. 'B'), and they had more face-to-face social interactions (two vs. one hour per day).

CONCLUSION

Escalating screen time is correlated with detrimental impacts on sleep efficiency, dream recall, physical activity, circadian rhythms, and academic performance in school-aged children. Fostering a screen-free bedroom environment and augmenting parental involvement in sleep routines may alleviate these adverse effects.

Online Binge-Watching Among Chinese College Students: Implications for Loneliness, Anxiety, and Depression

Purpose

This study aimed to investigate binge-watching behavior and addiction among a sample of 446 Chinese college students and assess its consequences for mental health, with a particular focus on feelings of loneliness, anxiety, and depression.

Participants and Methods

We conducted an online survey to gather data, examining participants' binge-watching habits and preferred platforms. We also utilized regression analysis to assess the impact of binge-watching addiction on mental health, exploring the associations between binge-watching addiction and feelings of loneliness, anxiety, and depression.

Results

Our findings revealed that the Chinese college students in our study typically defined binge-watching sessions as lasting approximately 7.22 hours, with an average of 10.83 episodes. Regarding the self-assessment of binge-watching, the average duration of participants was 5.76 hours, and the average number of episodes was 7.42. Tencent Video, iQIYI, and Bilibili emerged as the dominant platforms for binge-watching among the respondents. Regression analysis demonstrated a significant link between binge-watching addiction and mental health, with positive associations observed between binge-watching addiction and increased feelings of loneliness, anxiety, and depression.

Conclusion

The results of this study reinforce previous findings regarding the detrimental effects of excessive media consumption on mental well-being. Moreover, they provide valuable insights into the global prevalence of binge-watching and its impact on the psychological health of young adults in the digital age, emphasizing the need for proactive measures to address this issue.

Depression, anxiety, stress symptoms and their determinants among secondary students with vision impairment in rural Northwestern China during the COVID-19 pandemic

Objective

The measures implemented to control the spread of Coronavirus disease 2019 (COVID-19) could affect children's mental and vision health. Youth particularly from minority and socioeconomically disadvantaged backgrounds were more likely to be impacted by these measures. This study aimed to examine the mental health of children with vision impairment and associated factors in North-western China during the COVID-19 pandemic.

Methods

A cross-sectional study was conducted among 2,036 secondary school children living in Ningxia Hui Autonomous Region. Participants completed a survey on sociodemographic and lifestyle information and answered the Chinese version of the 21-item Depression Anxiety Stress Scales (DASS-21) questionnaire. Presenting visual acuity was measured by a trained enumerator. Multivariate logistic regression analysis was used to identify potential risk factors for mental health problems.

Results

Responses from 1,992 (97.8%) children were included in the analysis after excluding those with incomplete mental health outcome data. The prevalence of depression, anxiety and stress symptoms within the dataset were 28.9, 46.4, and 22.3%, respectively. The distribution of children with different stress levels differed significantly between those with and without vision impairment (p = 0.03). Multivariable logistic regression analyses revealed that depression symptoms decreased with higher parental education (OR, 0.76, 95% confidence intervals (CI):0.63-0.96), longer sleep duration (OR, 0.90, 95% CI: 0.81-0.97) and longer study time (OR, 0.82, 95% CI: 0.74-0.91), whereas they increased with higher recreational screen time (OR, 1.19, 95% CI: 1.08-1.32). Anxiety symptoms decreased with higher parental education (OR, 0.80, 95% CI: 0.66-0.96) and increased with higher recreational screen time (OR, 1.15, 95% CI: 1.04-1.27) and being a left-behind child (OR, 1.26, 95% CI: 1.04-1.54). In addition, stress symptoms decreased with longer sleep duration (OR, 0.92, 95%CI: 0.85-0.99) and increased with higher number of siblings (OR, 1.10, 95% CI: 1.01-1.19), higher recreational screen time (OR, 1.15, 95% CI: 1.04-1.28) and older age (OR,1.12, 95% CI: 1.004-1.24).

Conclusion

A considerable proportion of our sample experienced mental health problems during the pandemic. Healthcare planners in China should consider interventions such as reducing recreational screen time, ensuring sufficient sleep, and timely detection of mental health symptoms among socioeconomically disadvantaged groups.

Associations of 24-hour movement behaviors with externalizing and internalizing problems among children and adolescents prescribed with eyeglasses/contact lenses

Background

Emerging evidence points towards the psychological benefits of meeting 24-hour movement behavior (24-HMB) guidelines, but such associations have not yet been investigated among children and adolescents of prescribed eyeglasses/contact lenses. To this end, we examined associations of meeting 24-HMB guidelines with internalizing and externalizing challenges in this population.

Methods

We used data from the 2021 National Survey of Children's Health, a cross-sectional survey including a representative sample of US children and adolescents. Data on movement behaviors (physical activity [PA], sedentary behavior operationalized via screen time [ST], and sleep duration [SL]) and internalizing and externalizing problems were collected through caregiver proxy reports. Caregivers completed questionnaires for 6030 (2799 girls) US children and adolescents of prescribed eyeglasses/contact lenses. Logistic regression analyses were conducted to determine the above-presented associations.

Results

Only 7.1 % of those prescribed eyeglasses/contact lenses met all three 24-HMB guidelines, while they were more likely to meet SL guideline alone (32.1 %) in relation to other independent guidelines including PA (2.5 %) and ST (10.9 %). Compared to not meeting any of the three 24-HMB guidelines, meeting at least two guidelines (25.22 %) was significantly linked to lower odds of internalizing problems and externalizing problems.

Conclusion

Meeting at least two components of the 24-HMB guidelines was beneficially linked to internalizing and externalizing problems. Thus, strategies or intervention programs that focus on meeting 24-HMB guidelines should be implemented among children and adolescents of those prescribed eyeglasses/contact lenses to foster coping with psychological issues.

Association between meeting the 24-h movement guidelines and psychosocial health in children: A cross-sectional study

OBJECTIVE

Emerging evidence suggests that meeting the 24-h movement guidelines is associated with optimal mental health. However, there remains some uncertainty regarding this association in children. Therefore, this study aimed to examine the association between meeting the 24-h movement guidelines and psychosocial health in children.

METHODS

A cross-sectional study design was employed to investigate 2005 children aged 9-12 years from four districts of Shanghai, China. The 24-h movement behaviours were assessed using selected items from the Health Behaviour in School-aged Children (HBSC) survey questionnaire. Children's self-rated psychosocial health was evaluated using the Strengths or Difficulties Questionnaire (SDQ). Generalised Linear Models with the ordinal logistic module were employed to analyse the association between meeting the 24-h movement guidelines and psychosocial health.

RESULTS

The overall prevalence of meeting all three 24-h movement recommendations was 10.2%. Among children, 7.9% of them exhibited abnormal total difficulties, with a notable difference between sex (boys: 11.2%, girls: 7.0%, p = 0.001). Meeting all three 24-h movement behaviour recommendations was associated with reduced total difficulties, emotional symptoms, conduct problems, hyperactivity and peer problems. Furthermore, a dose-response association was observed, indicating that meeting a greater number of 24-h movement behaviour recommendations was associated with enhanced psychosocial health, particularly in boys.

CONCLUSION

The findings of this study highlight the positive association between meeting the 24-h movement guidelines and psychosocial health in children. Notably, meeting more of these recommendations was associated with a lower likelihood of experiencing psychosocial problems, with greater benefits observed in boys compared with girls.

Associations between excessive screen time and school and out-of-school injuries among adolescents: A population-based study

Most adolescents spend excessive screen time (with television viewing, computer/console gaming, discussion forums/chatting online, internet surfing, doing homework, and electronic mails) which may impact the occurring of various types of school and out-of-school injuries. We assessed their associations and potential confounding factors among 1559 middle-school students from north-eastern France (mean age=13.5 ± 1.3). Participants completed a questionnaire including socioeconomic features, daily screen time for various screen-based activities (coded 1=<2, 2 = 2-4, 3=≥5 h; daily-total-screen time level (TDST) was defined as their sum, categorized into <7/7-11/≥12), various injury types during the school-year, behavior and health difficulties (BHDs; alcohol/tobacco/cannabis/other illicit drugs use, suffered physical/verbal violence, sexual abuse, poor family-peer support, sleep difficulty, depressive symptoms, suicide attempt, and time at onset). Most subjects had TDST≥7 (82.3 %). There were dose-effect associations of TDST with school-physical/sports training, school-free-time, out-of-school-sports, and single/repeated injuries (sex-age-adjusted odds ratio reaching 4.45). BHDs explained up to 39 % of these associations. The frequency of subjects without various BHDs decreased with age since age 10 more quickly among the participants with both TDST≥7 and injury than among the others. Our findings may inform health care providers, parents, schools, and public policy that reducing elevated screen time is efficient to prevent injuries and BHDs among adolescents.

Appropriate Vestibular Stimulation in Children and Adolescents-A Prerequisite for Normal Cognitive, Motor Development and Bodily Homeostasis-A Review

The structural development of the vestibular part of the inner ear is completed by birth but its central connections continue to develop until adolescence. Their development is dependent on vestibular stimulation-vestibular experience. Studies have shown that vestibular function, modulated by experience and epigenetic factors, is not solely an instrument for body position regulation, navigation, and stabilization of the head and images but also influences cognition, emotion, the autonomous nervous system and hormones. To emphasize the importance of appropriate vestibular stimulation, we present a literature review of its effect on bodily homeostasis, cognition and emotion.

Visual stimulation by extensive visual media consumption can be beneficial for motor learning

In this randomized controlled intervention trial, we investigated whether intense visual stimulation through television watching can enhance visual information processing and motor learning performance. 74 healthy young adults were trained in a motor skill with visual information processing demands while being accommodated in a controlled environment for five days. The experimental manipulation (n = 37) consisted of prolonged television watching (i.e., 8 h/day, + 62.5% on average) to induce intense exposure to visual stimulation. The control group (n = 37) did not consume visual media. The groups were compared by motor learning performance throughout the study as well as pre/post visual attention parameters and resting-state network connectivity in functional MRI. We found that the intervention group performed significantly better in the motor learning task (+ 8.21% (95%-CI[12.04, 4.31], t(70) = 4.23, p < 0.001) while showing an increased capacity of visual short-term memory (+ 0.254, t(58) = - 3.19, p = 0.002) and increased connectivity between visual and motor-learning associated resting-state networks. Our findings suggest that the human brain might enter a state of accentuated visuomotor integration to support the implementation of motor learning with visual information processing demands if challenged by ample input of visual stimulation. Further investigation is needed to evaluate the persistence of this effect regarding participants exposed to accustomed amounts of visual media consumption.Clinical Trials Registration: This trial was registered in the German Clinical Trials Register/Deutsches Register klinischer Studien (DRKS): DRKS00019955.

Implications of time and space factors related with youth substance use prevention: a conceptual review and case study of the Icelandic Prevention Model being implemented in the context of the COVID-19 pandemic

PURPOSE

This research examines the implementation of the Icelandic Prevention Model (IPM) in Canada to identify opportunities revealed by the COVID-19 pandemic to re-design our social eco-system to promote wellbeing. This paper has two objectives: 1) to provide a conceptual review of research that applies the bioecological model to youth substance use prevention with a focus on the concepts of time and physical space use and 2) to describe a case study that examines the implementation of the IPM in Canada within the context of the COVID-19 pandemic.

METHOD

Study data were collected through semi-structured qualitative interviews with key stakeholders involved in implementing the IPM.

RESULTS

Findings are organized within three over-arching themes derived from a thematic analysis: 1) Issues that influence time and space use patterns and youth substance use, 2) Family and community cohesion and influences on developmental context and time use and 3) Opportunities presented by the pandemic that can promote youth wellbeing.

CONCLUSION

We apply the findings to research on the IPM as well as the pandemic to examine opportunities that may support primary prevention and overall youth wellbeing. We use the concepts of time and space as a foundation to discuss implications for policy and practice going forward.

Short-term effects of low-level laser versus ultrasound therapy on children's neck posture after long-term use of electronic devices

The purpose of the study was to compare the effect of low-level laser therapy (LLLT), ultrasound therapy (US), and strengthening and stretching exercise in children diagnosed with cervical straightening caused by long-term use of electronic devices. A total of 60 patients from 12 to 18 years of both gender diagnosed with straight neck syndrome which is losing the normal C shape of cervical vertebrae. Patients were randomized into three groups. In group A, patients received LLLT plus exercise, while in group B, they received US plus exercise, and group C received exercise. In group A and B, Cobb angle and VAS showed a significant improvement (more significant in group A) with P < 0.001, while in group C P = 0.006. LLLT, US, and exercise improved the cervical straight curve, and reduced pain with maximum effect was done by LLLT.

Impact of 2019 Novel Coronavirus (2019-nCov) Pandemic and Lockdown on Parents and Caregivers in Ontario, Canada

The COVID-19 pandemic has impacted parents' and children's well-being. This study aimed to evaluate the impact of the COVID-19 pandemic and its preventive measures on children's well-being and their parents' anxiety level. Parents/caregivers were invited to respond to a self-administered survey. The primary outcome was to assess the rate and severity of parental anxiety during the pandemic/lockdown. Four hundred and thirty parents completed the survey. Ninety-two (21%) and 10 (2%) parents reported that their children gained or lost weight during the pandemic, respectively. Eighty-one (19%) parents reported a regression in their children's developmental milestones, particularly in toileting, speech, and social interaction. The GAD-7 mean scores increased by 2.9 points (95% CI [2.5, 3.25]; P < .001) in comparison with prepandemic scores. Adjusted multivariable analysis showed that having children with psychological conditions and a maternal education level less than a university degree were significantly associated with higher parental anxiety.

A network analysis involving mental difficulties, cognition, physical fitness, 24-hour movement components, fatness, and sociodemographic factors in children

Background

Evidence supports the beneficial linear influence of diverse lifestyle behaviors on brain health since childhood; however, multiple behaviors -and not only one-simultaneously affect such outcomes. Therefore, the aim was to explore the multivariate relationship through a network analysis among mental difficulty and cognitive function with physical fitness (PF), 24-h movement components, fatness, and sociodemographic factors in children.

Methods

Cross-sectional study involved 226 children (52.2 % boys) aged between six and 11 years. Mental difficulties were evaluated through the Strengths and Difficulties Questionnaire and cognitive function by the Raven's Colored Progressive Matrices Test. The body mass index and PF were assessed according to the procedures suggested by the Proesp-Br, while moderate-to vigorous-intensity physical activity (MVPA) using accelerometry. The socioeconomic level, sleep, and screen time were evaluated by questionnaires. A network analysis was carried out to evaluate the associations among variables and establish centrality measures.

Results

Age and PF moderated the negative relationship between cognitive function and MVPA. Furthermore, the direct and inverse relationship between cognitive function and mental difficulties appears to be affected by the 24-h movement components. Finally, age, PF, and screen time are the nodes with higher values of expected influence, indicating more sensitivity to interventions for decreasing mental difficulty and improving cognitive function.

Conclusion

Mental health and cognitive function were moderated by the multivariate interaction among age, PF, and the three 24-h movement components. Nonetheless, centrality measures from the network analysis suggest that PF, MVPA, and screen time are crucial nodes in order to implement future interventions.

Network Analysis of Health-related Behaviors, Insomnia, and Depression Among Urban Left-behind Adolescents in China

Mental health of urban left-behind adolescents (LBA) is a public issue of growing concern. This study aims to examine the symptom level associations among multiple health-related behaviors, insomnia, and depression in urban LBA. Data on a sample of urban LBA aged 11-19 (N = 3,601) from the Adolescent Mental Health Survey in Shenzhen, China, were used. Health-related behaviors (i.e., Internet use, physical inactivity, social jetlag, smoking, and alcohol consumption), insomnia, and depressive symptoms were assessed using a self-administered questionnaire. Graphical Gaussian Model (GGM) was used to describe key bridging nodes in an undirected network. Directed Acyclic Graph (DAG) was used to construct a directed network and estimate the most likely causal associations among behaviors/symptoms. In the undirected network, Internet use was identified as the key bridging node most strongly associated with insomnia and depression. Two other key bridging nodes include difficulty initiating sleep and appetite change. In the directed network, anhedonia emerged as the most pivotal symptom, which could cause insomnia symptoms and behavioral changes, either directly, or through triggering other depressive symptoms, such as low energy and appetite change. These findings have implications for understanding the occurrence and maintenance process of health-related behaviors, insomnia, and depression in urban LBA. In practice, Internet use should be considered a priority in targeting multiple health behavior interventions. Meanwhile, early screening and treatment for anhedonia are of great significance as well.

Is more prolonged sun exposure associated with healthier life habits and obesity indicators in Portuguese children?

OBJECTIVES

Sun exposure seems to have an indirect effect on the development of obesity through vitamin D synthesis in the skin, the primary source of this vitamin. The present study aimed to investigate associations among sun exposure time, obesity indicators, and lifestyle habits in children.

METHODS

A total of 4755 children (3-10 years; 49.86% boys) from the north, center and south-central Portugal were included in the present study. During 2016/2017 children's sun exposure time, screen time, time devoted to the practice of physical activity and active play were collected through standard questionnaires answered by parents. Statistical analyses were conducted to investigate differences among sun exposure time according to the sex, age, obesity indicators and lifestyle habits.

RESULTS

Linear regression analysis showed that sun exposure time presented a negative association with Body Mass Index (β = -0.09, 95% CI: -0.18; -0.003; p = .042), body fat % (β = -0.31, 95%; CI: -0.54; -0.07; p = .010), computer time (β = -0.08, 95% CI: -0.12; - 0.05; p < .0001) and a positive association with active play time (β = 0.22, 95% CI: 0.17; 0.27; p < .0001) and total time of physical activity practice (β = 10.01, 95% CI: 4.52; 15.20; p < .0001).

CONCLUSIONS

The results reinforce the need for future guidance on the ideal sun exposure time, especially in children, who are at risk for vitamin D deficiency. Standardization of criteria for classifying optimal sun exposure time in this age group, considering the parameters that affect vitamin D status, such as age and seasonality, should be considered when planning future guidelines.

The Commit to Be Fit framework: a community case study of a multi-level, holistic school-based wellness initiative in rural Virginia

Background

Public health interventions that target children's physical, mental, and emotional health will enhance their ability to learn and grow. Although more complex, school initiatives that address multiple ecological levels and take a holistic view may be more effective and likely to lead to lasting change.

Aims

This article presents the framework of Commit to Be Fit (C2BF) as an example of how schools can integrate multi-level and holistic approaches for health. This innovative school-based intervention includes activities addressing individual, home, school, and community to create a culture of wellness. We describe the implementation of C2BF and its basis in ecological models and give examples of activities across three components: cafeteria, classroom, and community. We discuss challenges and note that leadership engagement and alignment were critical elements for C2BF's success thus far.

Discussion

C2BF uses a school-based multi-level approach to creating a culture of wellness and holistic health for students, teachers, and community members. C2BF is unique compared to other school-based programming and includes activities that address all eight domains posited for program sustainability within public health. Built to be flexible and adaptive, C2BF was able to successfully pivot during the COVID pandemic and also follow new science.

Conclusion

C2BF and other multi-level holistic approaches are more likely to achieve long-term change by utilizing strategies across the multiple levels of the ecological model to improve health and wellbeing.

[A review of research on psychological and behavioral problems in children with autism spectrum disorder during the coronavirus disease 2019 epidemic]

Since December 2019, coronavirus disease 2019 (COVID-19) has been rapidly spreading worldwide and affecting the physical and mental health of the general population. It may have even more serious potential harm to children with autism spectrum disorder (ASD). This paper provides a literature review on the psychological and behavioral problems experienced by children with ASD during the COVID-19 epidemic, as well as the factors influencing these issues. The findings of this review can serve as a basis for clinical research on ASD children.

Sports activity limitation during the COVID-19 pandemic in young Italian athletes: impact on mental health in children, adolescents, and young adults

Introduction

The closure of sports centres was implemented as a preventive measure to mitigate the transmission of SARS-CoV-2. Given the observed global decline in physical activity and concurrent rise in sedentary behaviour, even among younger age groups, a retrospective cross-sectional study was undertaken to evaluate the effects of this measure on mental health in children, adolescents, and young adults during the initial phases of the COVID-19 pandemic.

Methods

A total of 1,717 non-professional athletes (age range: 6-25; 53.9% males, 44.6% females) completed an online questionnaire including widely used and validated measures for mental health assessment (SDQ and PGWB-S) and questions regarding sociodemographic characteristics (such as gender), physical activity, and screen time. The association between mental health and sociodemographic characteristics, physical activity, and screen time was evaluated by using univariate and multivariable logistic regression models.

Results

In children and adolescents, the incidence of psychological difficulties was associated with not being physically active (OR = 1.49; 95% CI: 1.09, 2.07; p = 0.015). Engaging in physical activity during the period of closures, particularly if more than twice a week, was significantly associated with less psychological difficulties for children/adolescents (OR = 0.54; 95% CI: 0.35, 0.82; p = 0.004) and psychological symptoms (i.e., psychological well-being lower than the median) for youth/young adults (OR = 0.25; 95% CI: 0.14, 0.45; p < 0.001). More psychological difficulties were also found in males for children and adolescents (OR = 1.37; 95% CI: 1.06, 1.79; p = 0.018). However, young adult males showed less psychological symptoms than females (OR = 0.35; 95% CI: 0.22, 0.55; p = 0.001). Additionally, a greater amount of screen time was associated with a higher incidence of psychological symptoms in the whole sample.

Conclusions

Our results confirm the positive impact of physical activity on mental health during the COVID-19 pandemic among younger age groups. They also provide valuable insights into the risk-benefit relationship of interrupting sports activities as a preventive measure for infectious diseases.

Psychological Difficulties in Children and Adolescents during the COVID-19 Lockdown: The Effects of Spending Free Time with Parents or Using Digital Devices

The present study investigated protective and risk factors for psychological difficulties in children and adolescents during the COVID-19 lockdown. Specifically, the role of increased use of digital devices (DDs) for recreational purposes and the role of free time spent with parents were explored. Furthermore, the possible mediating effect of increased use of DDs in the relationship between free time spent with parents and psychological difficulties was tested. Participants were 4412 Italian children and adolescents, divided into two groups: children aged 6-10 years (n = 2248) and adolescents aged 11-18 years (n = 2164). Data were collected in Italy during the national lockdown and questionnaires were completed online by parents, who reported on their children's habits. The daily use of DDs increased significantly during the lockdown compared to the previous period, in both children and adolescents. Additionally, psychological difficulties increased in both children and adolescents during the lockdown, with a more severe impairment for children. Increased use of DDs during the lockdown positively predicted psychological difficulties (children: beta = 0.18, p < 0.001; adolescents: beta = 0.13, p < 0.001), while free time spent with parents was protective (children: beta = -13, p < 0.001; adolescents: beta = -0.12, p < 0.001). For children (but not adolescents), increased use of DDs mediated the effects of free time spent with parents on psychological difficulties (children: beta = -0.01, 95% CI [-0.018, -0.002]; adolescents: beta = -0.003, 95% CI [-0.009, 0.003]). The findings provide new insights for education and research.

Body size, form, composition, and a healthy lifestyle associates with health-related quality of life among Portuguese children

OBJECTIVES

This study aimed to describe the relationship between body size, form, and composition, and children's lifestyle on health-related quality of life (HRQoL).

METHODS

This cross-sectional study comprised 1333 children (9.05 ± 0.75 years; 683 females) living in mainland Portugal. Objective anthropometric measures were collected. Parents answered a standardized questionnaire related with children's lifestyle (e.g., sport participation, screen- and sleep-time) and family socioeconomic status (e.g., parental education). HRQoL was measured using the Portuguese version of the KIDSCREEN-27. Scores were categorized into low and high using a sex-specific normative cut-off from European children. A healthier score was created including positive scores for body weight, abdominal obesity, sport participation, sleep- and screen-time.

RESULTS

Body size, form and composition were correlated with children's physical wellbeing. However, sex differences were found in which parameters were associated with wellbeing. Among boys, the body mass index, waist circumference, waist-to-height ratio, subscapular and suprailiac skinfold were most correlated with wellbeing, while waist circumference and subscapular skinfold showed the strongest correlations for girls. Sleep duration and sport participation revealed a significant relationship with girls' HRQoL. A logistic regression analysis (adjusted for parental education) revealed that boys scoring 4 or 5 in the healthier index had an increased likelihood of high HRQoL level compared to those fulfilling none.

CONCLUSIONS

Future programs aimed at reducing obesity, particularly central obesity, and incorporating multiple health indicators and behaviors, such as sport participation and sleep duration may help improve children's health and wellbeing.

Development and initial evaluation of the COnfident Parent INternet Guide program for parents of 3-8 year olds

INTRODUCTION

Positive parenting promotes children's cognitive, social and emotional development and parenting programs based on social learning theory are effective in supporting parents to help reduce behavioral problems among high challenge children. However there is less evidence for programs with non-clinical populations. COPING (COnfident Parent INternet Guide) is a 10-week online universal program for parents of 3 - 8 year olds presenting evidence-informed principles based on social learning theory to support parents in addressing common challenges with their children. This study explored the development and feasibility of delivery of the program in terms of recruitment, retention and acceptability. It also reports on initial program effectiveness, evaluated via a pilot randomized controlled trial.

METHODS

Data on child behavior, parental skills and mental health were collected at baseline and three months later for all participants and six months post-baseline for the intervention group only.

RESULTS

Those parents who accessed the course provided very positive feedback however the trial experienced challenges with recruitment and initial engagement, particularly for parents referred by professionals. For parents who engaged with the program there were significant improvements in reported parenting skills with evidence of longer-term maintenance.

DISCUSSION

This paper provides limited evidence of effectiveness for the COPING program however further feasibility work, particularly around recruitment, is needed before conducting larger effectiveness trials.

Bedtime digital media use, sleep and fatigue among survivors of childhood cancer, their siblings and healthy control sibling pairs

Bedtime digital media use (BDM) is linked to poor sleep and fatigue in many populations. Pediatric cancer patients have been observed to engage in BDM in clinical settings, but it is unknown whether BDM rates are higher in this population or how this impacts their sleep and fatigue during treatment and into survivorship. The goal of this study was to evaluate patterns of BDM and its relationship with sleep and fatigue in a sample of pediatric cancer survivors and to compare these patterns with children from their own family (i.e. siblings) and children from unaffected families (i.e. healthy matched controls and siblings of controls). Ninety-nine children (4 groups: 24 acute lymphoblastic leukemia survivors, 13 survivor siblings, 33 controls, 29 control siblings) ages 8-18 were recruited from a long-term survivor clinic at a large children's hospital and via community advertisements. Survivors were 2-7 years post-treatment (M = 4.80 years). Children's BDM was parent-reported. Children completed 7 consecutive days of sleep actigraphy and the PedsQL Multidimensional Fatigue Scale. Most survivors (66.67%) engaged in BDM; smartphones were the most common medium. BDM patterns were equivalent across survivors, their siblings, controls, and control siblings. Statistical trends suggested that BDM was associated with fewer minutes of sleep and greater fatigue for all children; these relationships were equivalent across groups. BDM was common among survivors, but usage was not different from their own siblings or compared to healthy control children and sibling pairs. This study underscores the importance of assessing bedtime digital media use in childhood cancer survivors, although other factors impacting sleep should be explored. Clinicians should emphasize established recommendations for healthy media use and sleep habits in pediatric oncology settings.

Caregiver perceptions of snacks for young children: A thematic synthesis of qualitative research

Snacks are inconsistently defined in nutrition research and dietary guidelines for young children, challenging efforts to improve diet quality. Although some guidelines suggest that snacks include at least two food groups and fit into an overall health promoting dietary pattern, snacks high in added sugars and sodium are highly marketed and frequently consumed. Understanding how caregivers perceive "snacks" for young children may aid in development of effective nutrition communications and behaviourally-informed dietary interventions for obesity prevention. We aimed to synthesize caregivers' perceptions of snacks for young children across qualitative studies. Four databases were searched for peer-reviewed qualitative articles including caregiver perceptions of "snacks" for children ≤5 years. We conducted thematic synthesis of study findings, concluding with the development of analytical themes. Data synthesis of fifteen articles from ten studies, conducted in the U.S., Europe, and Australia, revealed six analytical themes that captured food type, hedonic value, purpose, location, portion size, and time. Caregivers perceived snacks as both "healthy" and "unhealthy" foods. Less healthy snacks were described as highly liked foods, which required restriction and were consumed outside the home. Caregivers used snacks to manage behavior and curb hunger. Snack portions were described as "small", although caregivers reported various methods to estimate child portion size. Caregivers' perceptions of snacks revealed opportunities for targeted nutrition messaging, especially supporting responsive feeding and nutrient-dense food choices. In high-income countries, expert recommendations should consider caregivers' perceptions of snacks, more clearly defining nutrient-dense snacks that are enjoyable, achieve dietary requirements, reduce hunger, and promote healthy weight.