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Miyagawa S, Sato T, Maeda S. Demographic predictors of bedtime procrastination in the Japanese population. Sleep Biol Rhythms 2024; 22:199-206. [PMID: 38524171 PMCID: PMC10959875 DOI: 10.1007/s41105-023-00508-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 12/04/2023] [Indexed: 03/26/2024]
Abstract
Bedtime procrastination (BP) is prevalent and problematic, with no previous study conducted in Japan. This study developed the Japanese version of the Bedtime Procrastination Scale (BPS), assessed its validity, and investigated the relationship between BP, demographic features, and sleep outcomes. Participants were divided into two samples (N = 252 and N = 630). Sample 1 involved a longitudinal study to confirm test-retest reliability of the BPS. Sample 2 involved a cross-sectional study to assess confirmatory factor analysis, criterion-related validity, construct validity, and determine the internal consistency of the BPS. The relationship between BP and demographic features (gender, age, and employment status) and sleep outcomes (Athens Insomnia Scale, sleep hours, sleep onset latency, and sleep efficiency) was investigated using Sample 2. The BPS showed good internal consistency (Cronbach's α coefficients = .90-91), test-retest reliability (ICC = .86), and one factor model was valid; CFI = .95, TLI = .94, RMSEA = .10, and SRMR = .04. The BPS had a moderate positive association with general procrastination, moderate negative associations with self-control, sleep quality, and sleep duration on weekdays, and those who answered "yes" to the item "Do you have trouble with bedtime procrastination?" had higher BPS scores. BPS scores were moderately higher for younger participants (≤ 40 years), slightly higher for females, and non-significantly different between employment statuses. The BPS showed a significant positive correlation with insomnia symptoms, weak positive association with sleep efficiency on weekdays and holidays, and no significant association with sleep onset latencies on holidays and weekdays. This study provides new data on demographic predictors of BP in Japan. No clear effects of gender and employment status were found, but age was a strong predictor of BP, where younger age groups had a higher BP risk. Supplementary Information The online version contains supplementary material available at 10.1007/s41105-023-00508-7.
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Affiliation(s)
- Shion Miyagawa
- Graduate School of Education, Tohoku University, Miyagi, Japan
| | - Tomoya Sato
- Institute of Humanities and Social Sciences, Niigata University, Niigata, Japan
| | - Shunta Maeda
- Graduate School of Education, Tohoku University, Miyagi, Japan
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Tu Z, He J, Li Y, Wang Z, Wang C, Tian J, Tang Y. Can restricting while-in-bed smartphone use improve sleep quality via decreasing pre-sleep cognitive arousal among Chinese undergraduates with problematic smartphone use? Longitudinal mediation analysis using parallel process latent growth curve modeling. Addict Behav 2023; 147:107825. [PMID: 37542973 DOI: 10.1016/j.addbeh.2023.107825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/12/2023] [Accepted: 07/29/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND AND AIM Problematic smartphone use (PSU) has become a global public health problem. Excessive while-in-bed smartphone use may result in poor sleep quality. The present study aimed to examine whether restricting while-in-bed smartphone use can improve sleep quality and the mediating role of pre-sleep cognitive arousal in this process. METHODS A total 152 Chinese undergraduates with symptoms of PSU (Smartphone Addiction Scale-Short Version [SAS-SV] > 31) were recruited and randomly assigned to the intervention group (N = 76) and the control group (N = 76) for a 4-week follow-up experiment. Sleep quality (assessed by the Pittsburgh Sleep Quality Index) and pre-sleep cognitive arousal (assessed by the Pre-sleep Arousal Scale-Cognitive Arousal) were measured at baselime, Week1, Week2, Week3, and Week4. The longitudinal mediation model was analyzed using parallel process latent growth curve modeling. The significance of indirect effect was tested by 95% biascorrected accelerated confidence intervals on the basis of 5000 bootstrap samples. RESULTS The initial level of sleep quality was positively associated with the initial level of pre-sleep cognitive arousal. The intervention decreased pre-sleep cognitive arousal and increased sleep quality. The slope of pre-sleep cognitive arousal was positively associated with the slope of sleep quality. The mediating effect of pre-sleep cognitive arousal was significant. DISCUSSION Restricting while-in-bed smartphone use can improve sleep quality via decreasing pre-sleep cognitive arousal among Chinese undergraduates with symptoms of PSU. These results suggests that restricting while-in-bed smartphone use is a potential remedy for sleep disturbance induced by PSU.
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Affiliation(s)
- Zhihao Tu
- Navy Special Medical Center, Naval Medical University, Shanghai 200433, China; Qingdao Special Servicemen Recuperation Center of PLA Navy, Qingdao 266043, China
| | - Jingwen He
- Department of Medical Psychology, NO. 96110 Hospital, Yinchuan 750021, China; Department of Psychology, Naval Medical University, Shangahi 200433, China
| | - Yinan Li
- Department of Psychology, Naval Medical University, Shangahi 200433, China
| | - Ziying Wang
- Navy Special Medical Center, Naval Medical University, Shanghai 200433, China; Key Laboratory of Molecular Neurobiology of Ministry of Education, Shangahi 200433, China
| | - Chuan Wang
- Navy Special Medical Center, Naval Medical University, Shanghai 200433, China; Key Laboratory of Molecular Neurobiology of Ministry of Education, Shangahi 200433, China.
| | - Jianquan Tian
- Navy Special Medical Center, Naval Medical University, Shanghai 200433, China.
| | - Yunxiang Tang
- Department of Psychology, Naval Medical University, Shangahi 200433, China.
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Tu Z, He J, Wang Z, Wang C, Tian J, Tang Y. Development and validation of the while-in-bed-smartphone-use-induced sleep procrastination scale (WSPS) in Chinese undergraduates with/without problematic smartphone use. Qual Life Res 2023; 32:3085-3098. [PMID: 37347394 DOI: 10.1007/s11136-023-03457-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2023] [Indexed: 06/23/2023]
Abstract
PURPOSE Problematic smartphone use (PSU) has become a global public health problem. Excessive while-in-bed smartphone use may result in sleep procrastination and other negative outcomes. The present study aimed to develop and validate a new scale called WSPS to assess while-in-bed-smartphone-use-induced sleep procrastination among undergraduates. METHODS In total, 910 Chinese undergraduates completed the collection of WSPS, smartphone addiction scale-short version (SAS-SV), bedtime procrastination scale, Pittsburgh sleep quality index, and Zung self-rating depression scale. The whole sample were randomly splited in the exploratory factor analysis (EFA) sample (n = 455) and confirmatory factor analysis (CFA) sample (n = 455). 40 undergraduates with PSU (SAS-SV > 31) and 40 without PSU were asked to keep sleep diary for 2 weeks and complete the WSPS again. RESULTS EFA and CFA supported a six-item unidimensional structure of the WSPS. The WSPS demonstrated acceptable internal consistency among undergraduates. The WSPS showed good concurrent validity with other relevant variables including PSU, BP, sleep quality, and depression. Scalar invariance of the WSPS between undergraduates with/without PSU was supported, as well as scalar invariance across gender. The WSPS showed good convergent validity with self-report everyday while-in-bed smartphone use duration and good discriminant validity with sleep duration and sleep onset latency recorded by sleep diary. The WSPS also presented good test-retest reliability among undergraduates with/without PSU. CONCLUSION The WSPS is a reliable and valid measure of while-in-bed-smartphone-use-induced sleep procrastination in undergraduates with/without PSU.
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Affiliation(s)
- Zhihao Tu
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China
- Qingdao Special Servicemen Recuperation Center of PLA Navy, Qingdao, 266043, China
| | - Jingwen He
- Department of Medical Psychology, NO. 96110 Hospital (affiliated with the People's Liberation Army (PLA)), Yinchuan, 750021, China
- Department of Psychology, Naval Medical University, 800 Xiangyin Road, Shangahi, 200433, China
| | - Ziying Wang
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China
| | - Chuan Wang
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China
| | - Jianquan Tian
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China
| | - Yunxiang Tang
- Department of Psychology, Naval Medical University, 800 Xiangyin Road, Shangahi, 200433, China.
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Abdoli N, Sadeghi-Bahmani D, Salari N, Khodamoradi M, Farnia V, Jahangiri S, Brühl AB, Dürsteler KM, Stanga Z, Brand S. Nomophobia (No Mobile Phone Phobia) and Psychological Health Issues among Young Adult Students. Eur J Investig Health Psychol Educ 2023; 13:1762-1775. [PMID: 37754467 PMCID: PMC10527744 DOI: 10.3390/ejihpe13090128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND Smart phone use has become a part of people's everyday life. However, when the lack of using the smart phone to establish and maintain electronic communication is related to psychological distress, such a behavior may be considered a modern-age phobia, or nomophobia (no mobile phone phobia). The aims of the present study were to investigate among a sample of young adults the associations between scores for nomophobia and symptoms of depression, anxiety, stress, insomnia, and obsessive-compulsive disorders. METHODS A total of 537 students (mean age: 25.52 years; 42.3% females) participated in the study. They completed a booklet of self-rating questionnaires covering sociodemographic information and symptoms of nomophobia, depression, anxiety, stress, insomnia, and obsessive-compulsive disorders. RESULTS Higher scores for nomophobia were associated with higher scores for depression, anxiety, and stress, but not with scores for insomnia and obsessive-compulsive disorders. The regression model confirmed that symptoms of anxiety predicted nomophobia. CONCLUSIONS The present results support the assumption that nomophobia appears to be a mood disturbance related to stronger associations with symptoms of anxiety and, to a lesser extent, with symptoms of depression and stress. By contrast, nomophobia appeared to be unrelated to insomnia and symptoms of obsessive-compulsive disorders.
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Affiliation(s)
- Nasrin Abdoli
- Substance Abuse Prevention Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran; (N.A.); (M.K.); (V.F.); (S.J.)
| | - Dena Sadeghi-Bahmani
- Department of Psychology, Stanford University, Stanford, CA 94305, USA;
- Department of Epidemiology and Population Health, Stanford University, Stanford, CA 94305, USA
| | - Nader Salari
- Department of Biostatistics, School of Health, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran;
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran
| | - Mehdi Khodamoradi
- Substance Abuse Prevention Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran; (N.A.); (M.K.); (V.F.); (S.J.)
| | - Vahid Farnia
- Substance Abuse Prevention Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran; (N.A.); (M.K.); (V.F.); (S.J.)
| | - Somayeh Jahangiri
- Substance Abuse Prevention Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran; (N.A.); (M.K.); (V.F.); (S.J.)
| | - Annette Beatrix Brühl
- Center for Affective, Stress and Sleep Disturbances, Psychiatric Clinics of the University of Basel, 4002 Basel, Switzerland;
| | - Kenneth M. Dürsteler
- Division of Substance Use Disorders, Psychiatric Clinics of the University of Basel, 4002 Basel, Switzerland;
- Department for Psychiatry, Psychotherapy and Psychosomatic, Psychiatric Hospital, University of Zurich, 8001 Zurich, Switzerland
| | - Zeno Stanga
- Centre of Competence for Military and Disaster Medicine, Swiss Armed Forces, 3008 Bern, Switzerland;
| | - Serge Brand
- Substance Abuse Prevention Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran; (N.A.); (M.K.); (V.F.); (S.J.)
- Department of Epidemiology and Population Health, Stanford University, Stanford, CA 94305, USA
- Center for Affective, Stress and Sleep Disturbances, Psychiatric Clinics of the University of Basel, 4002 Basel, Switzerland;
- Division of Sport Science and Psychosocial Health, Department of Sport, Exercise, and Health, Faculty of Medicine, University of Basel, 4052 Basel, Switzerland
- School of Medicine, Tehran University of Medical Sciences, Teheran 1417466191, Iran
- Center for Disaster Psychiatry and Disaster Psychology, Psychiatric Clinics of the University of Basel, 4002 Basel, Switzerland
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Tu Z, He J, Wang Z, Wang C, Tian J, Tang Y. Can limiting bedtime smartphone use improve next-day working memory among undergraduates with problematic smartphone use? Psychiatry Res 2023; 327:115371. [PMID: 37540944 DOI: 10.1016/j.psychres.2023.115371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/23/2023] [Accepted: 07/23/2023] [Indexed: 08/06/2023]
Abstract
This study implemented a longitudinal self-control intervention experiment to examine whether limiting bedtime smartphone use can improve next-day working memory among individuals with problematic smartphone use (PSU). 156 Chinese undergraduates with PSU completed the 6-day experiment (3 nights for intervention condition and 2 nights for control condition). All participants were asked to complete N-back tests in the afternoon everyday during the experiment. The results indicated that limiting smartphone use in bed improved next-day working memory. Therefore, limiting smartphone use in bed is a potential remedy for daily cognitive impairments induced by PSU.
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Affiliation(s)
- Zhihao Tu
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China; Qingdao Special Servicemen Recuperation Center of PLA Navy, Qingdao, 266043, China
| | - Jingwen He
- Department of Medical Psychology, NO.96110 Hospital, Yinchuan, 750021, China; Department of Psychology, Naval Medical University, Shangahi, 200433, China
| | - Ziying Wang
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China; Key Laboratory of Molecular Neurobiology of Ministry of Education, Shangahi, 200433, China
| | - Chuan Wang
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China; Key Laboratory of Molecular Neurobiology of Ministry of Education, Shangahi, 200433, China.
| | - Jianquan Tian
- Navy Special Medical Center, Naval Medical University, Shanghai, 200433, China.
| | - Yunxiang Tang
- Department of Psychology, Naval Medical University, Shangahi, 200433, China.
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Jeoung S, Jeon H, Yang HC, An H, Suh S. A randomized controlled trial of a behavioral intervention for decreasing bedtime procrastination using a wait-list control group in a non-clinical sample of young adults. Sleep Med 2023; 108:114-123. [PMID: 37354745 DOI: 10.1016/j.sleep.2023.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/14/2023] [Accepted: 06/01/2023] [Indexed: 06/26/2023]
Abstract
STUDY OBJECTIVES Bedtime Procrastination (BP) is defined as the behavior of going to bed later than intended, without external reasons. This study is a randomized controlled trial aiming to establish efficacy of a behavioral intervention to decrease BP in a non-clinical sample. METHOD This was an open-label trial that was conducted in sixty participants (mean age 21.33 ± 2.35 years, 86.7% females) without insomnia or psychopathology who endorsed frequent BP. They were randomized to either the treatment group (n = 32) or wait-list control group (n = 28). Participants completed the Bedtime Procrastination Scale (BPS), the Epworth Sleepiness Scale (ESS), the Insomnia Severity Index (ISI), Center for Epidemiologic Studies Depression Scale (CES-D), Morningness-Eveningness Questionnaire (MEQ), and a weekly sleep diary. Functional analysis was conducted to investigate the function of BP. Linear mixed models were used for analyses. RESULT The treatment group showed significant improvement on the BPS (35.56% decrease, d = 2.19, bedtime procrastination duration based on the sleep diary (-46.29 min, d = 1.22), and sleep efficiency (5.70% increase, d = 1.25) compared to the wait-list control group following the intervention. There were also significant reductions in time spent from bedtime to lights out, and wake time to time out of bed, in addition to improvements in ISI and ESS scores in the treatment group compared to the control group. Functional analysis results indicated emotional regulation (31.3%), compensation (26.5%), and social interaction and belongingness (18.1%) as the most frequent functions of bedtime procrastination. CONCLUSION This study shows promising results for a behavioral intervention targeting BP and sleep. In addition, this study demonstrated various functions of BP as a sleep-interfering behavior. We expect that these findings could be used in future studies and clinical settings to decrease BP.
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Affiliation(s)
- Sonhye Jeoung
- Department of Psychology, Sungshin University, Seoul, Republic of Korea
| | - Huisu Jeon
- Department of Psychology, Sungshin University, Seoul, Republic of Korea
| | - Hae-Chung Yang
- Seoul Graduate School of Counseling Psychology, Republic of Korea
| | - Hyeyoung An
- Department of Psychology, Sungshin University, Seoul, Republic of Korea
| | - Sooyeon Suh
- Department of Psychology, Sungshin University, Seoul, Republic of Korea.
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Alshammari TK, Rogowska AM, Basharahil RF, Alomar SF, Alseraye SS, Al Juffali LA, Alrasheed NM, Alshammari MA. Examining bedtime procrastination, study engagement, and studyholism in undergraduate students, and their association with insomnia. Front Psychol 2023; 13:1111038. [PMID: 36733877 PMCID: PMC9886684 DOI: 10.3389/fpsyg.2022.1111038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 12/29/2022] [Indexed: 01/18/2023] Open
Abstract
Introduction Compulsive overstudying, known as studyholism, is an emerging behavioral addiction. In this study, we examine the prevalence of, and the relationships between, insomnia, study engagement, studyholism, bedtime procrastination among undergraduate students. Methods The Studyholism (SI-10), Athens Insomnia (AIS), and bedtime procrastination scales were administered to a convenience sample of 495 university students. Results Our findings indicate that the prevalence of insomnia was 75.31%, high studyholism was found in 15.31% of the sample, and increased study engagement was detected in 16.94%. Gender differences analysis revealed that females reported higher studyholism and bedtime procrastination than males. Fifth-year students had higher levels of studyholism than internship (p < 0.001), first-year (p < 0.01), and sixth-year students (p < 0.05). Insomnia was positively related to studyholism and bedtime procrastination. Furthermore, insomnia can be positively predicted by studyholism and bedtime procrastination. Participants with a medium level of studyholism were twice as likely to experience insomnia as those with a low level. Studyholics were six times more susceptible to insomnia than students with low studyholism levels. Compared to individuals with low bedtime procrastination levels, those with medium and high bedtime procrastination were twice as likely to report insomnia. Conclusion Our study highlights the interplay between insomnia, studyholism, and bedtime procrastination. Further, the findings indicate the need to increase awareness of insomnia.
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Affiliation(s)
- Tahani K. Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia,*Correspondence: Tahani K. Alshammari,
| | | | | | | | - Sarah S. Alseraye
- Department of Clinical Pharmacy, King Fahad Medical City, Ministry of Health, Riyadh, Saudi Arabia
| | - Lobna A. Al Juffali
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Nouf M. Alrasheed
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Musaad A. Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Go to bed! A systematic review and meta-analysis of bedtime procrastination correlates and sleep outcomes. Sleep Med Rev 2022; 66:101697. [PMID: 36375334 DOI: 10.1016/j.smrv.2022.101697] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/25/2022] [Accepted: 09/13/2022] [Indexed: 11/13/2022]
Abstract
Bedtime procrastination is defined as the volitional delay of going to bed, without any external circumstances causing the delay, and is associated with inadequate sleep. Alleviating bedtime procrastination is an important target for interventions promoting adequate sleep, yet the correlates of bedtime procrastination are poorly understood. This study examined (1) correlates of bedtime procrastination, and (2) strength and direction of the association between bedtime procrastination and sleep outcomes. Six databases (CINAHL, EMBASE, PsychINFO, PubMed, Scopus, Web of Science) were searched from inception to September 2021 against pre-determined eligibility criteria. Forty-three studies were included (GRADE = low). Meta-analysis revealed that bedtime procrastination had a moderate negative association with self-control (z = -0.39; CI: -0.45, -0.29) and a moderate positive association with evening chronotype (z = 0.43; CI: 0.32, 0.48). Furthermore, bedtime procrastination was moderately negatively associated with sleep duration (z = -0.31; CI: -0.37, -0.24), sleep quality (z = -0.35; CI: -0.42, -0.27) and moderately positively associated with daytime fatigue (z = 0.32; CI: 0.25, 0.38). Further high-quality studies are needed to identify causal relationships between bedtime procrastination and correlates, as well as bedtime procrastination and sleep. Future work will guide the development of interventions targeting bedtime procrastination for improved sleep outcomes. STUDY REGISTRATION: PROSPERO registration number CRD42021248891.
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Bedtime procrastination and chronotype differentially predict adolescent sleep on school nights and non-school nights. Sleep Health 2022; 8:640-647. [PMID: 36272919 DOI: 10.1016/j.sleh.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/19/2022] [Accepted: 09/16/2022] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Bedtime procrastination (BTP) refers to the tendency to delay sleep beyond an intended bedtime, in favor of continuing evening activities. BTP has been associated with negative sleep outcomes (later timing, shorter duration, poorer quality), and is viewed as a problem of exercising self-control. BTP could be particularly challenging in adolescents, given the combined effects of increasing bedtime autonomy, later chronotype, and a still developing self-control capacity. Thus far, research on BTP has only been based on self-report measures. Here we examined the influence of BTP on adolescent sleep, using objective measures of sleep. METHODS About 121 adolescents aged 14-19 years completed a survey on BTP, sleep quality, chronotype, and mental health. Subsequently, habitual sleep was actigraphically monitored for up to 2 weeks, and participants completed a temporal discounting task (a proxy for impulsivity). Associations between BTP, chronotype, and actigraphy-measured sleep were examined for school nights and non-school nights separately. RESULTS Greater BTP was associated with poorer subjective sleep, eveningness chronotype, and higher daytime fatigue, as well as higher anxiety/depression scores. Measured using actigraphy, greater BTP predicted later bedtimes and shorter sleep duration on school nights, even when controlling for chronotype. On non-school nights, eveningness chronotype, but not BTP, predicted later bedtimes and wake-up times. BTP was not correlated with temporal discounting. CONCLUSIONS Bedtime procrastination exerts significant influence on subjective and objective sleep measures in adolescents. Its effects are most prominent on school nights and can be separated from the effects of chronotype, which has stronger effects on sleep timing on non-school nights.
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Sluggish Cognitive Tempo among Iranian Children and Adolescents: A Validation Study of the Farsi Child and Adolescent Behavior Inventory (CABI)–Parent Version. J Clin Med 2022; 11:jcm11216346. [PMID: 36362574 PMCID: PMC9654992 DOI: 10.3390/jcm11216346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/03/2022] [Accepted: 10/19/2022] [Indexed: 11/29/2022] Open
Abstract
Background: Sluggish cognitive tempo (SCT), recently renamed cognitive disengagement syndrome (CDS), is a set of behavioral symptoms that includes excessive daydreaming, mental confusion and fogginess, being lost in one’s thoughts, and slowed behavior and thinking. Symptoms of SCT show overlap with a broad range of other symptoms such as attention-deficit/hyperactivity disorder inattention, anxiety, and depression, or oppositional defiant disorder (ODD). To measure SCT, one of the optimal measures is the Child and Adolescent Behavior Inventory (CABI). Here, we report the psychometric properties of the Farsi version of the CABI Parent Version, including the CABI SCT scale and its subscales. Methods: The participants were the parents of 209 children and adolescents (53.9% girls; ages 8–19 years; Mage = 14.23, SDage = 2.72). Parents completed the SCT, ADHD inattention (ADHD-IN), ADHD-hyperactivity/impulsivity (ADHD-HI), oppositional defiant disorder (ODD), limited prosocial emotions (callous-unemotional (CU) traits), anxiety, depression, social impairment, and academic impairment scales of the Child and Adolescent Behavior Inventory (CABI). Parents also completed four dimensions of the Strengths and Difficulties Questionnaire (SDQ: emotional problems; conduct problems; peer problems; prosocial behavior), and five dimensions of the Kidscreen questionnaire (physical health; psychological well-being; autonomy and parental well-being; peers and social support; school environment). Results: SCT symptoms demonstrated strong discriminant validity from the ADHD-IN symptoms. SCT showed stronger first-order and unique associations than ADHD-IN with anxiety, depression, and ODD, whereas ADHD-IN showed stronger first-order and unique associations than SCT with ADHD-HI, CU, and social and academic impairment. Further, SCT showed stronger first-order and unique associations than ADHD-IN with more emotional problems, peer problems, and with lower prosocial behavior, as assessed with the SDQ. Higher scores for SCT were associated with lower psychological well-being, autonomy and parental relations, and lower peer and social support, as assessed with the Kidscreen. Higher ADHD-IN scores were associated with lower peer and social support, and a lower school environment. Conclusions: The Farsi version of the CABI–Parent Version has very good psychometric properties for assessing SCT and other dimensions of psychopathology/impairment and replicates the findings from similar studies with children and adolescents from South Korea, Spain, Turkey, and the United States. Accordingly, the present study provides further support of the transcultural validity of the sluggish cognitive tempo construct.
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Chen H, Zhang G, Wang Z, Feng S, Li H. The Associations between Daytime Physical Activity, While-in-Bed Smartphone Use, Sleep Delay, and Sleep Quality: A 24-h Investigation among Chinese College Students. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:9693. [PMID: 35955049 PMCID: PMC9368626 DOI: 10.3390/ijerph19159693] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/28/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Bedtime smartphone use is an emerging issue that threatens the sleep health of children and young adults. Physical activity can have numerous health benefits, including reducing problematic or addictive behavior. However, the role of daily physical activity in reducing bedtime smartphone use is understudied. Hence, we conducted a one-day cross-sectional on the weekend (21-22 May 2021) to investigate the associations between daytime physical activity, bedtime smartphone use, and sleep quality. A total of 828 college students were recruited in two colleges. Their daytime physical activity indices were captured, including self-reported physical activity duration, intensity, volume, and smartphone-monitored walking steps. The participants reported whether they used smartphone while lying in bed (before sleep) and whether they delayed sleep due to smartphone use. Their while-in-bed screen time (duration) and subsequent sleep quality were also measured with self-report and a numeric rating scale, respectively. The results suggested that daytime physical activity duration was associated with lower chances of while-in-bed smartphone use (OR = 0.907, p = 0.019) and smartphone-related sleep delay (OR = 0.932, p = 0.014). However, no significant association was found between physical activity indices and while-in-bed screen time or sleep quality. These findings may contribute to understanding the reciprocal relationship between physical activity and smartphone use and highlighting the potential of controlling problematic bedtime smartphone use through daily physical activity. Future research is warranted to examine the associations with extra objective measures.
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Affiliation(s)
- Hongxing Chen
- Department of Physical Education, Nanjing Institute of Technology, Nanjing 211167, China
| | - Guodong Zhang
- Institute of Sports Science, College of Physical Education, Southwest University, Chongqing 400715, China
| | - Zhenhuan Wang
- Institute for Health and Sport (iHeS), Victoria University, Melbourne 3011, Australia
| | - Siyuan Feng
- Laboratory of Genetics, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Hansen Li
- Institute of Sports Science, College of Physical Education, Southwest University, Chongqing 400715, China
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12
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Maskevich S, Shen L, Drummond SPA, Bei B. What time do you plan to sleep tonight? An intense longitudinal study of adolescent daily sleep self-regulation via planning and its associations with sleep opportunity. J Child Psychol Psychiatry 2022; 63:900-911. [PMID: 34811748 DOI: 10.1111/jcpp.13540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/14/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Most adolescents are sleep deprived on school days, yet how they self-regulate their sleep-wake behaviours is poorly understood. Using ecological momentary assessment, this intense longitudinal study explored patterns of adolescents' daily bedtime and risetime planning and execution, and whether these behaviours predicted sleep opportunity. METHODS Every afternoon, for 2 school weeks and the subsequent 2 vacation weeks, 205 (54.1% female, 64.4% non-White) adolescents from year 10 to 12 (M ± SDage = 16.9 ± 0.9) reported their plans for bedtime (BT) that evening, and for risetimes (RT) the following day. Actual daily sleep was measured via actigraphy and sleep diary. RESULTS Some adolescents never planned bedtime (school 19.5%, non-school 53.2%) or risetime (school 1.5%, non-school 24.4%). More adolescents planned consistently (≥75% of days) on school (BT = 29.9%, RT = 61.3%) compared to non-school nights (BT = 3.5%, RT = 2.5%). On average, adolescents went to bed later than planned, with longer delays on non-school (71 min) compared to school nights (46 min). Of those who executed their plans within ≤15 min, more did it consistently (≥75% of days) on school (BT = 40.9%, RT = 67.7%) than on non-school nights/days (BT = 29.7%, RT = 58.6%). Mixed effects models utilizing daily data, controlling for sex, race, and study day, showed that bedtime planning predicted longer time in bed (TIB; p < .01) on school and shorter TIB on non-school nights (p < .01); and greater delay in actual (compared to planned) BT predicted shorter TIB (p < .001). CONCLUSIONS Adolescents may require support during the transition from parent-controlled to autonomous sleep self-regulation. Bedtime planning on school nights and going to bed as planned are two modifiable sleep regulatory behaviours that are protective and potential therapeutic targets for increasing sleep opportunity in adolescents.
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Affiliation(s)
- Svetlana Maskevich
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, Australia
| | - Lin Shen
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, Australia
| | - Sean P A Drummond
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, Australia
| | - Bei Bei
- School of Psychological Sciences, Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, Australia
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13
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Sadeghi-Bahmani D, Brand S. “Stay hungry, stay foolish, stay tough and sleep well!” Why resilience and mental toughness and restoring sleep are associated. Sleep Med Rev 2022; 62:101618. [DOI: 10.1016/j.smrv.2022.101618] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 11/29/2022]
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14
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Jakowski S, Stork M. Effects of sleep self-monitoring via app on subjective sleep markers in student athletes. SOMNOLOGIE 2022; 26:244-251. [PMID: 36311283 PMCID: PMC9595090 DOI: 10.1007/s11818-022-00395-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 12/14/2022]
Abstract
As sleep problems are highly prevalent among university students and competitive athletes, and the application of commercial sleep technologies may be either useful or harmful, this study investigated the effects of a 2-week sleep self-monitoring on the sleep of physically active university students (n = 98, 21 ± 1.7 years). Two intervention groups used a free sleep app (Sleep Score; SleepScore Labs™, Carlsbad, CA, USA: n = 20 or Sleep Cycle; Sleep Cycle AB, Gothenburg, Sweden: n = 24) while answering online sleep diaries. They used the app analysis function in week 1 and the 'smart alarm' additionally in week 2. As controls, one group answered the online sleep diary without intervention (n = 21) and another the pre-post questionnaires only (n = 33). Facets of subjective sleep behaviour and the role of bedtime procrastination were analysed. Multilevel models did not show significant interactions, indicating intervention effects equal for both app groups. Sleep Cycle users showed trends toward negative changes in sleep behaviour, while the online sleep diary group showed more, tendentially positive, developments. Bedtime procrastination was a significant predictor of several variables of sleep behaviour and quality. The results indicate neither benefits nor negative effects of app-based sleep self-tracking. Thus, student athletes do not seem to be as susceptible to non-validated sleep technologies as expected. However, bedtime procrastination was correlated with poor sleep quality and should be addressed in sleep intervention programmes.
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Affiliation(s)
- Sarah Jakowski
- grid.5570.70000 0004 0490 981XFaculty of Sport Science, Ruhr University Bochum, Gesundheitscampus Nord 10, 44801 Bochum, Germany
| | - Moritz Stork
- grid.5570.70000 0004 0490 981XFaculty of Sport Science, Ruhr University Bochum, Gesundheitscampus Nord 10, 44801 Bochum, Germany
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Magalhães P, Pereira B, Oliveira A, Santos D, Núñez JC, Rosário P. The Mediator Role of Routines on the Relationship between General Procrastination, Academic Procrastination and Perceived Importance of Sleep and Bedtime Procrastination. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18157796. [PMID: 34360087 PMCID: PMC8345532 DOI: 10.3390/ijerph18157796] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/16/2021] [Accepted: 07/21/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Sleep plays a key role in our overall function, and sleep insufficiency has been highlighted as a major health issue. 'Bedtime procrastination'-i.e., needlessly delaying the time one goes to bed without external reasons-is one reason for sleep insufficiency. The present research aims to explore the interrelationships among Bedtime Procrastination, other domains of Procrastination, and routine-related variables. METHODS The mediating effects of Wake-up Time and Dinner Time on the relationship between Bedtime Procrastination and General Procrastination, Academic Procrastination, and Perceived Importance of Sleep were tested. Self-reported questionnaires were used, and the sample comprised of 446 university students. RESULTS A partial mediation model was found. General Procrastination, Academic Procrastination, and Perceived Importance of Sleep showed direct effects on Bedtime Procrastination. Moreover, Academic and General Procrastination were positively associated with Bedtime Procrastination, whereas Perceived Importance of Sleep was negatively associated with Bedtime Procrastination. Indirect effects of the Perceived Importance of Sleep and General Procrastination, as mediated by Wake-up Time and Dinner Time, on Bedtime Procrastination were also found. CONCLUSIONS Personal routines (Wake-up Time and Dinner Time) along with individual characteristics (General and Academic Procrastination) and beliefs (perceived importance of sleep) may affect Bedtime Procrastination. Present results highlight the complexity of Bedtime Procrastination.
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Affiliation(s)
- Paula Magalhães
- Psychology Research Center, School of Psychology, Campus de Gualtar, University of Minho, 4710-052 Braga, Portugal; (B.P.); (A.O.); (D.S.); (P.R.)
- Correspondence: ; Tel.: +351-253-604-220
| | - Beatriz Pereira
- Psychology Research Center, School of Psychology, Campus de Gualtar, University of Minho, 4710-052 Braga, Portugal; (B.P.); (A.O.); (D.S.); (P.R.)
| | - André Oliveira
- Psychology Research Center, School of Psychology, Campus de Gualtar, University of Minho, 4710-052 Braga, Portugal; (B.P.); (A.O.); (D.S.); (P.R.)
| | - David Santos
- Psychology Research Center, School of Psychology, Campus de Gualtar, University of Minho, 4710-052 Braga, Portugal; (B.P.); (A.O.); (D.S.); (P.R.)
| | | | - Pedro Rosário
- Psychology Research Center, School of Psychology, Campus de Gualtar, University of Minho, 4710-052 Braga, Portugal; (B.P.); (A.O.); (D.S.); (P.R.)
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