Anxiety and depression aggravate impulsiveness: the mediating and moderating role of cognitive flexibility

The association of impulsivity with depression and anxiety symptoms: A transdiagnostic network analysis and replication

BACKGROUND

Impulsivity increases the risk for depression and anxiety. However, the granular pathways among them remain unknown. A network approach that moves from disorder-level analysis to symptom-level analysis can provide further understanding of psychopathological mechanisms. In this study, we examined the network structure of impulsivity and separate and comorbid symptoms of depression and anxiety.

METHODS

Regularized partial-correlation networks were estimated using cross-sectional data from 1047 Chinese participants aged 18-26 years (main dataset, mean age = 21.45 ± 2.01 years) and 325 Chinese participants aged 18-36 years (an independent replication dataset, mean age = 21.49 ± 3.73 years), including impulsivity-depression, impulsivity-anxiety, and impulsivity-depression-anxiety networks. The datasets were collected from 1 June 2023 to 4 August 2023 and from 27 April 2022 to 16 May 2022, respectively. Impulsivity, depression, and anxiety were assessed using Barratt Impulsiveness Scale Version 11, Patient Health Questionnaire-9, and Generalized Anxiety Disorder-7, respectively. Bridge centrality was analyzed, and a network comparison test (NCT) was conducted to investigate the differences between the main dataset and replication dataset.

RESULTS

The motor impulsivity dimension was revealed to be closely connected with individual symptoms of depression and anxiety regardless of whether they were in separate disorder forms or comorbid forms. In all the networks, motor impulsivity was the most important bridge node. The NCT showed comparable network connectivity and network structure between the main and replication datasets.

LIMITATIONS

The use of cross-sectional data limited the inferences about the direction of causality between variables.

CONCLUSIONS

These findings elucidate the psychopathological mechanisms underlying how impulsivity functions within depression, anxiety, and comorbidity and support that motor impulsivity is an important risk factor across different mental disorders and is responsible for comorbidity. The implications of these findings are discussed.

The relationship between adolescent impulsivity, mental health, and internet addiction: a latent profile analysis

This study aimed to identify group variations in adolescent impulsivity and explore the connections between latent categories of impulsivity and psychological symptoms, social anxiety, and internet addiction. The research involved 2,378 participants from three middle schools in Guangdong Province, China. We assessed the impact of impulsivity levels (measured by BBIS) on depression (measured by KADS-11), anxiety (measured by SCARED), social anxiety (measured by SASC), and internet addiction (measured by YDQ). Latent profile analysis was employed to examine the diversity in adolescent impulsivity, establish latent classifications, and investigate the variances in psychological symptoms, social anxiety, and internet addiction. The middle school students were categorized into five latent groups based on their BBIS scores. Statistical analysis revealed five impulsivity categories, strongly linked to psychological symptoms and social anxiety but less strongly associated with internet addiction. The high impulsivity group (C5) exhibited higher scores in psychological symptoms and social anxiety compared to other groups, whereas the poor self-regulation group (C3) displayed greater psychological symptoms, social anxiety scores, and internet addiction than the impulsive behavior group (C4). Future investigations should investigate the underlying factors contributing to the observed differences among these groups.

Disentangling boredom from depression using the phenomenology and content of involuntary autobiographical memories

Recurrent involuntary autobiographical memories (IAMs) are memories retrieved unintentionally and repetitively. We examined whether the phenomenology and content of recurrent IAMs could differentiate boredom and depression, both of which are characterized by affective dysregulation and spontaneous thought. Participants (n = 2484) described their most frequent IAM and rated its phenomenological properties (e.g., valence). Structural topic modeling, a method of unsupervised machine learning, identified coherent content within the described memories. Boredom proneness was positively correlated with depressive symptoms, and both boredom proneness and depressive symptoms were correlated with more negative recurrent IAMs. Boredom proneness predicted less vivid recurrent IAMs, whereas depressive symptoms predicted more vivid, negative, and emotionally intense ones. Memory content also diverged: topics such as relationship conflicts were positively predicted by depressive symptoms, but negatively predicted by boredom proneness. Phenomenology and content in recurrent IAMs can effectively disambiguate boredom proneness from depressive symptoms in a large sample of undergraduate students from a racially diverse university.

A moderated mediation analysis on the influence of social support and cognitive flexibility in predicting mental wellbeing in elite sport

The purpose of this study was to examine the mechanism by which social support influences mental wellbeing. Using the thriving through relationships model to provide a theoretical underpinning, cognitive flexibility was hypothesised as a mediator. Additionally, the research examined the consistency of this pathway between elite athletes, retired athletes, and non-athletes. Survey responses from a sample of 247 participants (n = 49 elite athletes, n = 61 retired athletes, n = 137 convenience sample; of which 127 (51.4%) were males were included in the analysis. Initial mediation analysis revealed a significant indirect pathway from social support to mental wellbeing through cognitive flexibility. Moderated mediation analysis revealed this pathway was significant for retired athletes and the convenience sample, but not for elite athletes. Results provide additional insight into the mechanisms by which social support influences wellbeing. Cognitive flexibility interventions may not be as effective for elite athletes.

When is it good to feel bad? How sadness and fear differ in their effects on routine development

Introduction

This study follows recent calls to explore the emotional foundations of routine development. Routine development forms a nexus between stability and change and is thus crucial for studying organizational decision-making and organizational change. Individuals and teams going through organizational change often experience sadness and fear.

Methods

We conducted a laboratory experiment with 84 teams to study the effect of sadness and fear on routine development.

Results and discussion

In the sadness condition, we observed positive effects on repetitiveness, speed, reliability, and attentiveness in action. Teams experiencing fear reacted better to 'performance traps' in which pre-established routines are ineffective. Our findings show how the behaviors elicited by sadness and fear might ultimately affect team behavior, and therefore managerial practices.

Effectiveness of executive functioning training among heterogeneous adolescent samples: A systematic review

The aim of the present systematic review was to discuss the reported efficacy of executive functioning training techniques among adolescents. A systematic review of the literature was conducted to retrieve and consolidate findings from articles evaluating executive functioning training techniques among adolescents. A total of 26 articles were located that examined the role of executive functioning training techniques among adolescents (age 10-19 years). Articles retrieved enabled comparison across psychiatric and medical diagnoses including attention deficit hyperactivity disorder (ADHD), autism spectrum disorder (ASD), as well as adolescents with physical health concerns. Results revealed that among typically developing adolescents, executive functioning training was non-significant or yielded small effect size improvements in executive functioning as measured by behavioral and neuroimaging tasks among 62.5% of studies reviewed. In contrast, in those with medical conditions, ASD, ADHD, and conduct disorder, all but two studies reviewed yielded a medium to large effect size, supporting the effectiveness of EF training. Future research is needed to identify the long-term efficacy of these treatments, as well as their generalizability to real-world conditions.

The Influence of Emotional Regulation and Cognitive Flexibility on Sleep Habits in Spanish Children and Adolescents through the Lens of Parents

BACKGROUND

Previous research studies have suggested the importance of studying the relationship between emotional regulation and sleep habits. Some investigations have especially focused on how emotional regulation could impact sleep habits in children and adolescents. Therefore, these researchers have stated there exists a two-way direction in this relationship.

OBJECTIVE

This study aimed to analyze the influence of emotional regulation on sleep habits in Spanish children and adolescents and the mediating role of anxiety in this relationship.

METHOD

Participants were 953 Spanish parents who completed the assessment protocol according to their children and adolescents' information.

RESULTS

The results revealed moderate-strong correlations between emotional regulation problems and sleep habit disturbances (r = 0.375, p < 0.001), trait (r = 0.488, p < 0.001) anxiety, and state (r = 0.589, p < 0.001) anxiety. Additionally, emotional regulation showed a direct impact on sleep habits (β = 0.011, p = 0.005). Trait and state anxiety demonstrated a significant mediating role in the relationship between emotional regulation and sleep habits.

CONCLUSIONS

Emotional regulation may have an impact on sleep habits during childhood and adolescence, suggesting the importance of early intervention focused on the emotions management and the prevention of sleep habit disturbances.

Cognitive flexibility and emotional self-regulation of the elderly with Empty nest syndrome: Benefits of acceptance and commitment therapy

Background and Aims

Empty nest syndrome (ENS) is a mental condition that affects both parents. When children leave their parents' home, the parents experience such feelings as unhappiness, loss, fear, inability, difficulty in adjusting roles, and changing their relationships. The present study aimed to evaluate the cognitive flexibility and emotional self-regulation of the elderly with ENS: benefits of Acceptance and Commitment Therapy (ACT).

Methods

The research method was quasi-experimental where a pretest-posttest design was used with a control group. The statistical population included all the elderly with the ENS in Tehran in the academic year of 2019-2020. Thirty of them were selected by convenience sampling method and then stochastically placed in two experimental and control groups. Dennis and VanderWal's Cognitive Flexibility Inventory, and Hofmann and Kashdan's Emotional Self-Regulatory Questionnaire for data collection in the pretest and posttest phases. Group-based ACT was implemented on experimental group members in 8 sessions of 90 min, while controls received no intervention. The collected data were analyzed by SPSS version 25 and analysis of covariance.

Results

The results showed a significant difference between the posttest scores of the experimental and control groups so the group-based ACT increased the cognitive flexibility and emotional self-regulation of the experimental group members (p < 0.05).

Conclusions

According to our results, therapists and health professionals can use ACT for interventions related to the health of the elderly with ENS, especially to improve cognitive flexibility and emotional self-regulation.

Impulsivity in patients with acne excoriee

BACKGROUND

Impulsivity is the tendency to make decisions and act quickly without adequate planning and anticipating risks. Impulsivity is among the core symptoms of many psychiatric disorders. In addition, impulsivity can affect the course of various diseases shaped by behaviors.

AIMS

This study aimed to evaluate the relationship between the presence of acne excoriee and different impulsivity dimensions.

STUDY DESIGN

A case-control study.

METHODS

Thirty patients with acne excoriee (AE+) and 30 acne vulgaris patients without excoriated lesions (AE-) enrolled in this study. Impulsivity was evaluated by The Barratt Impulsivity Scale (BIS). In addition, The Beck Anxiety Inventory, The Beck Depression Inventory, and The Skin Picking Scale were applied to assess the clinical characteristics of the participants.

RESULTS

AE+ patients had higher non-planning subscale scores of BIS than AE- patients in this study. In addition, the acne-picking severity score determined by The Skin Picking Scale was positively correlated with non-planning subscale scores of BIS. There was no significant difference between the groups regarding the Beck Depression Inventory and Beck Anxiety Inventory.

CONCLUSIONS

These results indicate that AE patients have a lack of forethought. In other words, it has been shown that impulsive personality traits, which indicate a lack of planning for the future, may be associated with the acne-picking behavior of the patients.

Mediating and moderating effects of cognitive flexibility in the relationship between social media addiction and phubbing

Presently, social media is widely used worldwide among different populations. Therefore, phubbing rapidly became a popular phenomenon in our daily life. However, little is known about the underlying mechanism and interaction between social media use and phubbing. Therefore, this research examines the mediating and moderating role of cognitive flexibility in the association between social media addiction and phubbing. Participants were 385 university students (280 females) studying at a state university in eastern Turkey and completed the self-reported measures of cognitive flexibility, social media addiction, and phubbing. The results showed that cognitive flexibility mediated and moderated the effect of social media addiction on phubbing. These findings may contribute to the discussion around the psychological consequences of using social media alongside increasing awareness about factors affecting and explaining the association between social media use and phubbing, which have important implications for research and practice.

Fear of COVID-19 and Subjective Well-Being: Sequential Mediating Role of Cognitive Flexibility and Psychological Resilience

The negative relationship between fear of COVID-19 and well-being has been revealed over the last years. However, the potential variables that affect this relationship need to be studied. This study examines the sequential mediating role of cognitive flexibility and psychological resilience in the relationship between fear of COVID-19 and subjective well-being. Six hundred and eight participants (339 females and 269 males, aged between 18-79 years) completed the Fear of COVID-19 Scale, the Brief Resilience Scale, the Cognitive Flexibility Inventory, the Positive and Negative Affect Schedule, and the Satisfaction with Life Scale online. The path analysis was conducted using PROCESS macro in the study. The sequential mediation analyses show that the control dimension of cognitive flexibility and psychological resilience fully mediate the relationship between fear of COVID-19 and subjective well-being. In other words, fear of COVID-19 indirectly affects subjective well-being via the control dimension of cognitive flexibility and psychological resilience. In order to restrain the adverse effects of COVID-19, individuals’ cognitive flexibility and psychological resilience levels should be increased to enhance their well-being.

Aggressive behavior, boredom, and protective factors among college students during closed-off management of the COVID-19 pandemic in China

Background

Chinese colleges have implemented strict closed-off management in response to the outbreak of a new variant of the new coronavirus, Omicron. But such management measures may lead to more aggressive behavior. The study aimed to determine the associations between boredom and aggressive behavior with aggression and to examine the impact of boredom on aggression through the moderating role of cognitive flexibility.

Methods

The Multidimensional State Boredom Scale, the Reactive-Proactive Aggression Questionnaire, and the Cognitive Flexibility Inventory were applied to a sample of 719 college students who were in a closed-off management environment.

Results

For individuals with high cognitive flexibility, the relationship between state boredom and proactive aggression was not significant. The relationship between state boredom and proactive aggression was significantly positively correlated for individuals with low cognitive flexibility, especially low substitutability. Cognitive flexibility has no significant moderating effect on the relationship between state boredom and reactive aggression.

Conclusion

The findings highlighted the importance of boredom as a potential risk factor for aggression, while cognitive flexibility appears as a potential protective factor.

The chain-mediation pathway of gender regarding academic delay of gratification in college students is regulated by anxiety/depressive mood and prospective memory

Objective

This study investigated the relationship between gender and academic delay of gratification (ADOG) in college students and explored the mediating roles of anxiety/depressive mood and prospective memory to provide a theoretical intervention approach based on internal mechanisms.

Methods

Random cluster sampling was conducted on 609 students from three universities situated in the Province of Anhui, China with the use of data from several questionnaires: the general information questionnaire, Generalized Anxiety Disorder Scale, Patient Health Questionnaire, Prospective and Retrospective Memory (PRM) Questionnaire, and ADOG Scale.

Results

The females' anxiety and depression levels were lower than that of the males, while the female PRM and ADOG performance improved when compared to that of the males. Anxiety and depression were negatively correlated with PRM and ADOG, respectively, whereas the PRM and ADOG data demonstrated a positive correlation. Depression/anxiety and prospective memory also played a chain intermediary role between gender and ADOG.

Conclusion

Gender not only directly affects college students' ADOG, but it also has indirect effects through depression/anxiety and prospective memory. Therefore, it is very important to treat students' mental health differently according to gender to improve prospective memory and delayed academic satisfaction.

The Effects of Tai Chi on the Executive Functions and Physical Fitness in Middle-Aged Adults with Depression: A Randomized Controlled Trial

Objective

The present study examined the effects of Tai Chi exercise on the executive functions (EFs) and physical fitness of middle-aged adults with depression.

Methods

A total of 39 middle-aged adults with depression (M_age = 50.59, SD = 7.38) were randomly assigned to the Tai Chi group (n = 20) or the waiting-list control group (n = 19). The Tai Chi group engaged in two 90 min sessions of Tai Chi exercise per week for 12 weeks; the waiting-list control group was asked to maintain their usual daily routines for 12 weeks. Depression symptoms, EFs (i.e., inhibitory control, planning, working memory, and cognitive flexibility), and physical fitness (i.e., cardiovascular fitness, muscular strength, muscular endurance, power, and flexibility) were evaluated at the baseline (pretest), 6-week (mid-test), and 12-week (post-test) marks.

Results

Both groups showed decreased depression symptoms over time. Compared with the control group, the Tai Chi group showed decreased reaction times for incongruent conditions in the Stroop test from pretest to mid- and post-test, and shorter reaction time for incongruent conditions in the Stroop test than the control group at post-test; the Tai Chi group performed significantly better than the control group in overall total move score of Tower of London (TOL). The Tai Chi group also showed increased total correct scores of TOL from pretest to mid- and post-test, and greater total correct scores of TOL than the control group at post-test. Additionally, results indicated that Tai Chi exercise comprehensively improved physical fitness from pretest to mid- and post-test. Greater performance in terms of cardiovascular fitness, muscular strength, and power was also found in the Tai Chi group at post-test than in the control group.

Conclusions

These findings suggest that the 12-week Tai Chi exercise improved inhibitory control, planning and working memory aspects of executive functions, and physical fitness in middle-aged adults with depression.

Understanding self-report and neurocognitive assessments of cognitive flexibility in people with and without lifetime anorexia nervosa

Objective: Anorexia nervosa (AN) is a serious eating disorder associated with several cognitive difficulties including poor cognitive flexibility (i.e. difficulties in effectively adapting to changes in the environment and/or changing task demands). AN research has primarily assessed cognitive flexibility using neurocognitive tests, and little is known about the differences or similarities between self-report and neurocognitive assessments of cognitive flexibility. This study investigated the relationship between self-report and neurocognitive assessments of cognitive flexibility in people with no history of an eating disorder (n = 207) and people with a self-reported lifetime diagnosis of AN (n = 19).Methods: Participants completed self-report and neurocognitive assessments of cognitive flexibility through an online study.Results: No significant correlations were found between self-report and neurocognitive assessments of cognitive flexibility for either group of the sample, suggesting that these assessments may evaluate different aspects of cognitive flexibility. Further, negative mood and self-reported eating disorder symptoms were found to significantly relate to self-reported cognitive flexibility, but were not associated with performance on neurocognitive tests of cognitive flexibility.Conclusions: To provide a comprehensive understanding of perceived and objective cognitive flexibility in AN, future research and clinical assessments should include both self-report and neurocognitive assessments.

Effects of Negative Emotions and Cognitive Characteristics on Impulse Buying During COVID-19

The COVID-19 pandemic has seriously disrupted the individual buying habits along with their consumption patterns. Previous studies indicated that anxiety and depression were related to impulse buying. However, no research has explored the mechanism possibly underlying the association between anxiety, depression, and impulse buying. Based on the regulatory focus theory and the emotion-cognition-behavior loop, this study aimed to examine the impacts of negative emotions on impulse buying and the mediating role of cognitive characteristics during the COVID-19 pandemic. In April 2021, 734 Chinese undergraduates were recruited by cluster sampling and they completed self-report measures of anxiety, depression, intolerance of uncertainty, cognitive flexibility, and impulse buying. Results showed that impulse buying was positively associated with anxiety, depression, and intolerance of uncertainty, while it was negatively associated with cognitive flexibility. Cognitive flexibility fully mediated the effects of anxiety and depression on cognitive facet of impulse buying. Meanwhile, intolerance of uncertainty fully mediated the effects of anxiety and depression on affective facet of impulse buying. Overall, this study shows that different pathways can explain how anxiety and depression exacerbate two aspects of impulse buying, and it highlights the importance of cognitive characteristics for the link between negative emotions and impulse buying. Intervention programs should focus on increasing cognitive flexibility and tolerance to uncertainty of high-risk individuals, so as to strengthen their adaptive purchase behaviors.

Temporal associations among loneliness, anxiety, and depression during the COVID-19 pandemic period

Numerous studies have reported that individuals' loneliness, anxiety, and depression levels increased during the COVID-19 pandemic period. However, reciprocal associations among loneliness, anxiety, and depression, as well as gender differences in these associations, have not been investigated. Therefore, temporal associations among loneliness, anxiety, and depression and gender differences in these associations were examined in a longitudinal study during the COVID-19 pandemic period. The loneliness, anxiety, and depression levels of 458 university students were evaluated at three timepoints (T1, T2, and T3) during the COVID-19 pandemic period in China. The timepoints were separated by 1 month. Cross-lagged panel designs were used to examine reciprocal associations among loneliness, anxiety, and depression as well as the stability and gender differences of these associations. Cross-lagged panel analysis revealed that T1 depression positively predicted T2 anxiety and loneliness, T1 loneliness positively predicted T2 depression, T2 anxiety positively predicted T3 depression, T2 depression positively predicted T3 anxiety and loneliness, T2 loneliness positively predicted T3 depression, and T1 loneliness positively predicted T3 anxiety through the mediating role of T2 depression. No gender differences were observed in the cross-lagged associations. During the COVID-19 pandemic period, loneliness and depression predicted each other across time, and loneliness predicted anxiety across time, mediated by depression. No gender differences were observed in the cross-lagged associations among loneliness, anxiety, and depression.

Trait Anxiety Mediates Impulsivity and Suicidal Ideation in Depression During COVID-19 Pandemic

Suicidality in patients with major depressive disorder (MDD) has been an urgent affair during the COVID-19 pandemic. It is well-established that impulsivity and trait anxiety are two risk factors for suicidal ideation. However, literature is still insufficient on the relationships among impulsivity, (state/trait) anxiety and suicidal ideation in individuals with MDD. The present study aims to explore the relationships of these three variables in MDD patients during the COVID-19 pandemic through three scales, including Barrett Impulsivity Scale (BIS), State-Trait Anxiety Scale (STAI) and Self-rating Idea of Suicide Scale (SIOSS). Sixty-three MDD patients (low SIOSS group and high SIOSS group, which were split by the mean score of SIOSS) and twenty-seven well-matched healthy controls were analyzed. Our results showed that the high SIOSS group had higher trait anxiety (p < 0.001, 95% CI = [-19.29, -5.02]) but there was no difference in state anxiety (p = 0.171, 95% CI = [-10.60, 1.25]), compared with the low SIOSS group. And the correlation between impulsivity and suicidal ideation was significant in MDD patients (r = 0.389, p = 0.002), yet it was not significant in healthy controls (r = 0.285, p = 0.167). Further, mediation analysis showed that trait anxiety significantly mediate impulsivity and suicidal ideation in patients with depression (total effect: β = 0.304, p = 0.002, 95% CI = [0.120, 0.489]; direct effect: β = 0.154, p = 0.076, 95% CI = [-0.169, 0.325]), indicating impulsivity influenced suicidal ideation through trait anxiety in MDD patients. In conclusion, our results suggested that trait anxiety might mediate the association of impulsivity and suicidal ideation in MDD patients. Clinicians may use symptoms of trait anxiety and impulsivity for screening when actively evaluating suicidal ideation in MDD patients, especially in the setting of COVID-19 pandemic.

Visuospatial working memory capacity moderates the relationship between anxiety and OCD related checking behaviors

BACKGROUND

Compulsive checking behavior is the most prevalent compulsive behavior in patients with obsessive-compulsive disorder (OCD). While some studies have shown that anxiety and executive function influence compulsive checking behavior, the relationship between these constructs is inconclusive. Hence, we sought to explore the interplay between executive function, anxiety and compulsive checking behavior.

MATERIALS AND METHODS

47 healthy participants (HC) and 51 patients with OCD participated in the study. Symptoms and emotional states were assessed using the Yale-Brown Obsessive Compulsive Scale, the Obsessive-Compulsive Inventory-Revised, the Beck Anxiety Inventory, and the Beck Depression Inventory. Participants also completed three tests of neuropsychological functioning: the Stop Signal Task, the Spatial working memory Task, and the Wisconsin card sorting test. We analyzed the relationships between anxiety, executive function, and compulsive checking symptoms.

RESULTS

Patients with OCD showed significantly greater anxiety (p < 0.001) and impairments in visuospatial working memory function (p = 0.030) compared to HC participants, while inhibition and set-shifting were not significantly different between the two groups. Visuospatial working memory was negatively related to compulsive checking behavior (p = 0.016). Visuospatial working memory also played a moderating role in the positive relationship between anxiety and compulsive checking behavior (β = -0.281, p = 0.022).

CONCLUSION

Anxiety symptoms play an important role in explaining compulsive checking behavior in patients with OCD who have relatively weak visuospatial working memory ability. These findings provide a foundation for further research regarding the roles of emotion and cognitive inflexibility in compulsive checking behavior in patients with OCD.

Prenatal Exposure to Chemical Mixtures and Cognitive Flexibility among Adolescents

Cognitive flexibility, the ability to smoothly adapt to changing circumstances, is a skill that is vital to higher-level executive functions such as problem-solving, planning, and reasoning. As it undergoes substantial development during adolescence, decrements in cognitive flexibility may not become apparent until this time. There is evidence that prenatal exposure to individual chemicals may adversely impact executive functions in children, but few studies have explored the association of co-exposure to multiple chemicals with cognitive flexibility specifically among adolescents. We investigated this association among a diverse group of adolescents living near a Superfund site in New Bedford, Massachusetts. Specifically, using Bayesian kernel machine regression (BKMR) and multivariable regression analyses, we investigated the association of biomarkers of prenatal exposure to organochlorines (DDE, HCB, PCBs) and metals (lead, manganese) with cognitive flexibility, measured with four subtests of the Delis-Kaplan Executive Function System. In BKMR models, we observed adverse joint associations of the chemical mixture with two of the four cognitive flexibility subtests. In covariate-adjusted linear regression models, a two-fold increase in cord blood Mn was associated with poorer performance on two of the subtests: Trail-Making (scaled score difference = −0.60; 95% CI: −1.16, −0.05 points) and Color-Word Interference (scaled score difference = −0.53; 95% CI: −1.08, 0.01 points). These adverse Mn-cognitive flexibility associations were supported by the results of the BKMR. There was little evidence of effect modification by sex and some evidence of effect modification by a measure of social disadvantage, particularly for the associations between HCB and cognitive flexibility. This study is among the first to provide evidence of an adverse association of prenatal exposure to a chemical mixture with cognitive flexibility in adolescence.

Longitudinal Associations between Internalizing Symptoms, Dispositional Mindfulness, Rumination and Impulsivity in Adolescents

Mindfulness has been associated with fewer negative mental health symptoms during adolescence, but fewer studies have examined longitudinal associations between mindfulness and symptoms in conjunction with two vulnerability factors for psychopathology with mindfulness: rumination and impulsivity. This study examined longitudinal associations between internalizing symptoms (depression, anxiety, stress), mindfulness, rumination, and impulsivity over a one-year period among 352 Spanish adolescents (57.4% girls; M = 14.47, SD = 1.34). Participants completed self-reported measures of symptoms, mindfulness, rumination, and impulsivity at two time points. Mindfulness negatively predicted stress and depressive symptoms, and a bidirectional negative association was found between mindfulness and impulsivity. Impulsivity positively predicted stress, and anxiety positively predicted depressive symptoms, stress, and rumination. This study highlights the importance of mindfulness as a protective factor and impulsivity and anxiety as risk factors for internalizing symptoms throughout adolescence. These findings build on previous studies that examined longitudinal associations between mindfulness and symptoms by including rumination and impulsivity’s roles.

The Mediating Effect of Self-Control on Depression and Tendencies of Eating Disorders in Adolescents

Self-control is very important for the adaptation among adolescents. It is associated with depression and tendencies of eating disorders. This study aimed to investigate the relationship between the two and the mediating role of self-control for adolescents. In total, 1,231 adolescents (11-18 years) participated in this study. Self-control, depression, and tendencies of eating disorders were evaluated using the Dual-Mode of Self-Control Scale (DMSC-S), 11-item Kutcher Adolescent Depression Scale (KADS-11), and Eating Attitudes Test (EAT-26). The correlations among these factors were analyzed using mediating effect models. Girls had higher scores on the both subscales (impulse system and control system) of DMSC-S (P < 0.001). Those between 15-18 years had higher scores on impulse system than those between 11-14 years (P < 0.001). A significant mediating effect (12.8%) of the impulse system was observed between depression and tendencies of eating disorders in adolescents.

The effects of active acupuncture and placebo acupuncture on insomnia patients: a randomized controlled trial

The purpose of this study was to observe and compare the clinical efficacy of active acupuncture and placebo acupuncture in the treatment of insomnia and mood disorders. 96 patients with insomnia in Chengdu were randomly divided into two groups (1:1). The active acupuncture group (AA group n = 48) received the tube of Park sham device with deep needle insertion. The placebo acupuncture group (PA group n = 48) received the tube of Park sham device with a retractable needle shaft and a blunt tip. The same acupuncture points and treatment cycles were used in both groups. The overall score for the Pittsburgh Sleep Quality Index (PSQI) is the primary outcome. Secondary outcomes recorded sleep rate, self-reported depression scale (SDS), self-assessment anxiety scale (SAS), the 'six component' scores of PSQI, and 'Deqi' scale scores. Eventually, 90 patients completed the study. After 2 weeks of treatment, the total score of PSQI in the AA group was 4.6 ± 2.4 and in the PA group was 12.9 ± 1.8 (ES = 3.91, p < .1). The SAS, SDS score in the AA group were 39.9 ± 5.6/39.9 ± 5.9 and in the PA group were 59.7 ± 6.1/61.2 ± 4.4 (ES = 3.38/4.9, p < .1). The sleep rate were 93.8% and 25.0% (p < .1). During the 1 month follow-up period, the PSQI total score in the AA group (5.2 ± 1.9) was superior to the PA group (13.1 ± 1.8) (ES = 4.27, p < .1). The SAS, SDS score in the AA group were 40.4 ± 5.1/42.7 ± 6.6 and in the PA group were 63.7 ± 6.6/63.5 ± 4.8 (ES = 3.95/3.60, p < .1). Throughout the study period, the 'six component' scores of PSQI in the AA group was superior to the PA group (each p < .1). Except for tingling and cooling, other acupuncture sensations were significant differences (each p < .1). Compared to the placebo acupuncture, active acupuncture can significantly improve insomnia, and clinical efficacy is maintained for at least 6 weeks.

Is a mother's recalled parental rearing behavior, her attributions of her child's behavior, and her psychopathology associated with her mother-child relationship quality?

BACKGROUND

The mother-child relationship quality (MCRQ) may represent a transgenerational transmission mechanism of mental health problems. In this context, we examine the mother's recalled parental rearing behavior, actual attributions of her child's behavior, and her current psychopathology.

METHOD

A clinical sample of mother-child dyads was assessed with the Questionnaire for the Assessment of Recalled Parental Rearing Behavior, the Parent Cognition Scale, and the Symptom Checklist at the Child Psychiatric Family Day Hospital for preschool children in Münster, Germany, at admission. MCRQ was assessed with the Parent-Infant Relationship Global Assessment Scale, a structured interview with the child (Strukturiertes Interview zur Erfassung der Kind-Eltern-Interaktion), and the Multiperspective Parent-Child Relationship Questionnaire.

RESULTS

Multiple regression analyses showed no direct association between the mother's recalled parental rearing behavior and any measure of the MCRQ. However, maternal dysfunctional attributions about her child's behavior and her actual psychopathology showed the expected negative associations with the multiperspective measures of MCRQ. The relationship quality assessments did not correlate significantly with each other.

CONCLUSION

The divergent measures of MCRQ, which seem to assess different aspects, are a barrier to investigate the association between the mother's recalled parental rearing behavior and MCRQ. However, low MCRQ is associated with increased maternal psychopathology and maternal dysfunctional attributions on child behavior.

Fronto-temporal galanin modulates impulse control

RATIONALE

The neuropeptide galanin has been implicated in a wide range of pathological conditions in which frontal and temporal structures are compromised. It works through three subtypes of G-protein-coupled receptors. One of these, the galanin receptor 1 (Gal-R1) subtype, is densely expressed in the ventral hippocampus (vHC) and ventral prefrontal cortex (vPFC); two brain structures that have similar actions on behavioral control. We hypothesize that Gal-R1 contributes to cognitive-control mechanisms that require hippocampal-prefrontal cortical circuitry.

OBJECTIVE

To examine the effect of local vHC and vPFC infusions of M617, a Gal-R1 agonist, on inhibitory mechanisms of response control.

METHODS

Different cohorts of rats were implanted with bilateral guide cannulae targeting the vPFC or the vHC. Following infusion of the Gal-R1 agonist, we examined the animals' behavior using a touchscreen version of the 5-choice reaction time task (5-choice task).

RESULTS

The Gal-R1 agonist produced opposing behaviors in the vPFC and vHC, leading to disruption of impulse control when infused in the vPFC but high impulse control when infused into the vHC. This contrast between areas was accentuated when we added variability to the timing of the stimulus, which led to long decision times and reduced accuracy in the vPFC group but a general improvement in performance accuracy in the vHC group.

CONCLUSIONS

These results provide the first evidence of a selective mechanism of Gal-R1-mediated modulation of impulse control in prefrontal-hippocampal circuitry.