Middle Adolescence Research Articles

Age-varying associations of parent-adolescent relationship and school connectedness with adolescent self-compassion: Differences by gender.

Parent-adolescent relationships and school connectedness are critical promotive factors for adolescent self-compassion. However, little is known about how the magnitude of the associations between these protective factors and self-compassion changes across continuous age groups and whether gender differences exist in the age-varying associations. This study aims to investigate (1) the age-varying associations of parent-adolescent relationships and school connectedness with self-compassion using time-varying effect modeling and (2) how their age-varying associations may differ by gender. A total of 14,776 adolescents aged 10-18 (mean age = 13.53 ± 2.08, 52.3% males) from Shenzhen, China participated in this study. All adolescents completed the online questionnaires in the school computer rooms. The results showed that both parent-adolescent relationships and school connectedness were positively associated with adolescent self-compassion, and the magnitudes fluctuated with age. Specifically, the association between parent-adolescent relationships and self-compassion peaked for adolescents in early adolescence, with the key timing for girls (age group of 10 years old) being slightly earlier than boys (age group of 11 years old). The association between school connectedness and self-compassion was stronger for boys in the early years of adolescence (in the age group of 12.7 years), while stronger for girls during middle adolescence (in the age group of 14.0 years). Overall, girls were more sensitive to connections with parents and schools than boys during most age groups. The findings demonstrated differential key timing for boys and girls regarding family- and school-based intervention to cultivate self-compassion and highlighted the importance of maintaining strong connections with families and schools for cultivating adolescent self-compassion, particularly for girls.

Social Epidemiology of Early Initiation of Electronic and Conventional Cigarette Use in Early to Middle Adolescents.

Early initiation of tobacco use among adolescents is a significant public health concern. While there is extensive research on overall tobacco use, much of it focuses on initiation in late adolescence, uses cross-sectional designs, and lacks specific exploration of electronic versus conventional cigarette use. This study aims to investigate social determinants influencing the early initiation of electronic and conventional cigarette use among U.S. adolescents. We utilized data from the Adolescent Brain Cognitive Development (ABCD) study, which follows a cohort of tobacco-naïve children from age nine through age 16. The social determinants examined included household income, parental education, financial difficulties, racial/ethnic minority status, family structure, neighborhood income, and gender minority status. Structural equation models were employed to assess associations between these determinants and early initiation of electronic and conventional cigarette use. Male gender was associated with a higher likelihood of conventional cigarette use, while the risk of early initiation of electronic cigarette use was similar across genders. White adolescents were at a higher risk of conventional cigarette use; however, the risk for electronic cigarette use was comparable across White and non-White groups. Financial difficulties were linked to an increased likelihood of early initiation of conventional cigarette use but not electronic cigarette use. Higher household income was associated with a reduced risk of initiating conventional cigarettes but did not significantly impact electronic cigarette use. Adolescents from married families were less likely to initiate electronic cigarette use. No significant effects were found for parental education or neighborhood income on the initiation of either type of cigarette use. Age did not significantly affect the initiation of either cigarette type, and gender minority status was marginally associated with early initiation of conventional cigarette use. The social patterning of electronic cigarette use differs from that of conventional cigarette use, suggesting that distinct tobacco products do not pose a uniform risk across all adolescents. This study underscores the importance of tailored prevention efforts that address the unique challenges associated with early initiation of electronic and conventional cigarette use among adolescents. The differential risk factors identified suggest targeted prevention strategies for conventional cigarette use, focusing on financial difficulties, household income, and gender-specific interventions. In contrast, prevention efforts for electronic cigarette use may require broader, more inclusive approaches that address all adolescents, regardless of their background. Comprehensive universal screening for electronic cigarette use and targeted screening for conventional cigarette use among adolescents are recommended.

Investigating the Differential Impact of Short- and Long-Term Informal Caregiving on Mental Health Across Adolescence: Data From the Tokyo Teen Cohort

PurposeYoung caregivers experience, on average, poorer mental health outcomes than non–caregiving young people. However, it is unknown to what extent these effects differ with age, or among short-term versus long-term caregivers. Using repeated assessment of young caregiving across multiple waves of a prospective adolescent cohort study, we conducted repeated cross-sectional analyses of caregiver status and contemporaneous depressive symptoms, self-harm, and suicidality in early to middle adolescence. MethodsFour waves of questionnaire data from a large, longitudinal population-based cohort study (Tokyo Teen Cohort) were analyzed. Caregiver status was collected from participants aged 10, 12, 14, and 16 years. Mental health outcomes assessed were depressive symptoms, self-harm and suicidal feelings. Logistic regression analyses were conducted assessing effects of a) young caregiver status and b) new, long-term, and ex-caregiver 2-year categorizations on mental health outcomes at 12, 14, and 16 years, both unadjusted and adjusted for potential confounders (sex, low income, single-parent household, and parental distress). ResultsDepressive symptoms were elevated among long-term caregivers at 14 years (unadjusted odds ratio (uOR): 3.11 [1.33–7.27], adjusted odds ratio (aOR): 2.49 [1.03–5.99]). Borderline associations between long-term caregiving and self-harm (uOR: 3.14 [1.06–9.35], aOR: 2.51 [0.82–7.63]) and suicidal feelings (uOR: 2.49 [0.98–6.34], aOR: 2.06 [0.80–5.33]) were detected at 16 years. No associations were found at age 12 years in primary analyses; sensitivity analyses indicated possible increased depressive symptoms. DiscussionYoung caregivers with long-term caregiving roles are at the greatest risk for negative mental health outcomes, with effects concentrated in later adolescence. These findings highlight urgent need for early identification and practical and psychological support for young people shouldering caregiving burdens.

Longitudinal Associations among Psychological Control, Positive and Negative Interactions, and Adolescents' Domain-Specific Disclosure to Parents.

Although much research has shown that parental psychological control undermines adolescents' routine disclosure to parents, past research has not examined whether the effects of psychological control on disclosure are domain-specific and mediated by the quality of adolescents' interactions with mothers and fathers. The present one-year longitudinal study examined whether parental support and negative interactions with each parent mediated longitudinal associations between adolescents' ratings of psychological control and adolescents' disclosure about routine prudential, personal, and multifaceted activities, as defined by social domain theory. These issues were examined over one year in 174 mostly White (74%), U.S. middle class middle adolescents (M = 15.70 years, SD = 0.63, 83 males). Greater parental psychological control was associated over time with less disclosure to both parents about personal activities and less disclosure to fathers about multifaceted issues. Perceived declines in support fully mediated the effects of psychological control on adolescent disclosure to mothers about personal issues and partially mediated the effects on disclosure to fathers about personal and multifaceted issues. In addition, negative interactions led to decreased disclosure about prudential issues. Thus, perceived psychological control and relationship quality had domain-specific and parent-specific longitudinal effects on adolescent disclosure to parents about their routine activities.

The Influence of Maternal and Paternal Parenting on Adolescent Brain Structure

BackgroundAdolescents raised in families with different maternal and paternal parenting combinations exhibit variations in neurocognition and psychopathology; however, whether neural differences exist remains unexplored. This study used a longitudinal twin sample to delineate how different parenting combinations influence adolescent brain structure and to elucidate the genetic contribution. MethodsA cohort of 216 twins participated in parenting assessments during early adolescence and underwent magnetic resonance imaging scanning during middle adolescence. We utilized latent profile analysis to distinguish between various maternal and paternal parenting profiles and subsequently investigated their influences on brain anatomy. Biometric analysis was applied to assess genetic influences on brain structure, and associations with internalizing symptoms were explored. ResultsIn early adolescence, 4 parenting profiles emerged, which were characterized by levels of harshness and hostility in one or both parents. Compared with adolescents in “catparent” families (low harshness/hostility in both parents), those raised in “tigermom” families (harsh/hostile mother only) exhibited a smaller nucleus accumbens volume and larger temporal cortex surface area; those in “tigerdad” families demonstrated larger thalamus volumes; and those in “tigerparent” families displayed smaller volumes in the midanterior corpus callosum. Genetic risk factors contributed significantly to the observed brain structural heterogeneity and internalizing symptoms. However, the influences of parenting profiles and brain structure on internalizing symptoms were not significant. ConclusionsThe findings underscore distinct brain structural features linked to maternal and paternal parenting combinations, particularly in terms of subcortical volume and cortical surface area. This study suggests an interdependent role of maternal and paternal parenting in shaping adolescent neurodevelopment.

Gene-environment transactions between peer cigarette use, parental supervision, and Chinese adolescent cigarette smoking initiation.

The initiation and continued use of tobacco products constitute an ongoing source of preventable disease that continues to pose a significant risk to global adolescent health. Scarce research has sought to explore the influences of two well-known environmental risk factors, parental supervision and peer cigarette use, on genetic and environmental contributions to adolescent cigarette use, especially in non-Western populations. Following 602 Chinese twin pairs (52% female, N = 1204) from early to middle adolescence at two-time points (Mage = 12 and 15) from 2006 to 2009 and using multivariate biometric modeling, this study examined gene-environment interplay (i.e., gene-environment correlation and interaction) between perceived parental supervision, peer cigarette use, and adolescent cigarette smoking initiation. From early to middle adolescence, genetic influences on cigarette smoking initiation became more pronounced, whereas shared environmental influences that promote similarity between family members diminished. Genetic factors primarily explained the links between parental supervision and cigarette smoking initiation in mid-adolescence. Peer cigarette use displayed stronger associations with and moderating potential in adolescent cigarette smoking initiation than parental supervision. High levels of peer cigarette use amplified genetic risk for cigarette smoking initiation in mid-adolescence. Chinese adolescent cigarette smoking initiation involves dynamic gene-environment transactions primarily with peer processes over development. Mid-adolescence constitutes a developmental period wherein underlying genetic risk for cigarette smoking initiation is particularly sensitive to peer influences. Targeted interventions aimed at reducing Chinese adolescent cigarette smoking initiation should focus on peer processes during this developmental period.

A unique multi-synaptic mechanism involving acetylcholine and GABA regulates dopamine release in the nucleus accumbens through early adolescence in male rats.

Adolescence is characterized by changes in reward-related behaviors, social behaviors, and decision-making. These behavioral changes are necessary for the transition into adulthood, but they also increase vulnerability to the development of a range of psychiatric disorders. Major reorganization of the dopamine system during adolescence is thought to underlie, in part, the associated behavioral changes and increased vulnerability. Here, we utilized fast scan cyclic voltammetry and microdialysis to examine differences in dopamine release as well as mechanisms that underlie differential dopamine signaling in the nucleus accumbens (NAc) core of adolescent (P28-35) and adult (P70-90) male rats. We show baseline differences between adult and adolescent-stimulated dopamine release in male rats, as well as opposite effects of the α6 nicotinic acetylcholine receptor (nAChR) on modulating dopamine release. The α6-selective blocker, α-conotoxin, increased dopamine release in early adolescent rats, but decreased dopamine release in rats beginning in middle adolescence and extending through adulthood. Strikingly, blockade of GABAA and GABAB receptors revealed that this α6-mediated increase in adolescent dopamine release requires NAc GABA signaling to occur. We confirm the role of α6 nAChRs and GABA in mediating this effect in vivo using microdialysis. Results herein suggest a multisynaptic mechanism potentially unique to the period of development that includes early adolescence, involving acetylcholine acting at α6-containing nAChRs to drive inhibitory GABA tone on dopamine release.

Economic Development and Adolescent Wellbeing in 139 Countries

There is a positive association between the level of economic development and national levels of overall life satisfaction (OLS) in the adult population, with decreasing marginal returns. However, research shows no association in early adolescence and a negative association in middle adolescence. We hypothesize that this is due to the exclusion of low-income countries, where adolescent wellbeing is rarely collected. 2015–2019 Gallup World Poll data from 139 countries in middle adolescence (age 15–17; n 36,907) were analysed using linear regression to study the association between country levels of economic development and OLS, positive emotions (PE), and negative emotions (NE), and how this varies across economic development levels, and gender. Variations across economic development levels were compared with those observed in the adult population. Log per-capita GDP is positively associated with OLS and PE, although in high-income countries no association is observed for PE, and among females for OLS. For NE, a negative association is observed in lower-income countries and a positive association in higher-income countries. In this age group (age 15–17), the log per-capita GDP – OLS association is stronger in lower-income countries than in higher-income countries, but this pattern reverses with age in adulthood. A nuanced relationship exists between economic development and adolescent wellbeing, which varies across measures, levels of economic development, gender, and age -including notable differences compared to adults. Our study highlights the need for improving child and adolescent wellbeing data worldwide, especially in lower-income countries, to better understand how best to support wellbeing globally.

Developmental Changes in Pharyngeal Airway in the Male Population From Adolescence to Adulthood.

During adolescence, there is a significant surge in height and total body mass of males. Consequently, they simultaneously experience enhancements in their circulatory and respiratory systems, which adapt to these physiological transformations. The purpose of present study was to investigate the developmental changes in male pharyngeal airway from adolescence to adulthood. Lateral cephalograms of 192 males were obtained and divided into 5 groups: early adolescence (age 10-13 years), middle adolescence (age 14-17 years), late adolescence (age 18-21 years), early adulthood (age 22-30 years), and middle adulthood (ages 31-50 years). The dimensions of pharyngeal airway spaces and the related anatomical structures were investigated. The one-way analysis of variance and Pearson correlation analysis were employed for statistical analysis. During middle adolescence, the pharyngeal airway seems to be nearly completed in males. A significant negative correlation was found between the ANB angle and SPS, TPS, and EPS values.

Neural Tracking of Perceived Parent, but Not Peer, Norms Is Associated with Longitudinal Changes in Adolescent Attitudes about Externalizing Behaviors.

Adolescents' perceptions of parent and peer norms about externalizing behaviors influence the extent to which they adopt similar attitudes, yet little is known about how the trajectories of perceived parent and peer norms are related to trajectories of personal attitudes across adolescence. Neural development of midline regions implicated in self-other processing may underlie developmental changes in parent and peer influence. Here, we examined whether neural processing of perceived parent and peer norms in midline regions during self-evaluations would be associated with trajectories of personal attitudes about externalizing behaviors. Trajectories of adolescents' perceived parent and peer norms were examined longitudinally with functional neuroimaging (n = 165; ages 11-16 years across three waves; 86 girls, 79 boys; 29.7% White, 21.8% Black, 35.8% Latinx, 12.7% other/multiracial). Behavioral results showed perceived parent norms were less permissive than adolescents' own attitudes about externalizing behaviors, whereas perceived peer norms were more permissive than adolescents' own attitudes, effects that increased from early to middle adolescence. Although younger adolescents reported less permissive attitudes when they spontaneously tracked perceived parent norms in the ventromedial and medial pFCs during self-evaluations, this effect weakened as they aged. No brain-behavior effects were found when tracking perceived peer norms. These findings elucidate how perceived parent and peer norms change in parallel with personal attitudes about externalizing behaviors from early to middle adolescence and underscore the importance of spontaneous neural tracking of perceived parent norms during self-evaluations for buffering permissive personal attitudes, particularly in early adolescence.

Coping strategies of school-going adolescents during the COVID-19 pandemic in the climate vulnerable Manafwa watershed, Uganda

BackgroundThe COVID-19 pandemic disrupted daily life, economies, and health, prompting strict government measures, including nationwide lockdowns and school closures in Uganda, resulting in significant academic setbacks for adolescents. The coping strategies employed by school-going adolescents in Uganda amidst the COVID-19 pandemic remain inadequately understood. This study aimed to assess the coping strategies adopted by school-going adolescents (early, middle and late adolescents) in the Manafwa watershed, recognized as one of Uganda’s most vulnerable regions, during the COVID-19 pandemic.MethodsA cross sectional study design was conducted from I5th May, 2023 to 30th June, 2023 on 762 school going adolescents from government-aided secondary schools within the Manafwa watershed area. The adolescent version of the KidCope tool was used to evaluate adolescents’ coping strategies. Factor analysis identified correlations among adolescents’ coping strategies. Independent Samples t-Test and One-Way Variance of Analysis (ANOVA) was used for comparing the mean score differences of the coping strategies among the gender and adolescents’ stages respectively.ResultsMajority (n = 141, 36.2%) of the participants employed adaptive coping followed by negative-emotion coping (n = 127, 32.6%) and avoidant coping (n = 122, 31.3%). Females employed statistically higher resignation as a coping strategy compared to males, (mean of 1.2 vs. 1.0, respectively; P = 0.026). A higher proportion (n = 88, 69.3%) of middle age adolescents employed negative-emotion regulation (P-value = 0.040). However, those in early adolescence significantly utilized distraction as a coping strategy more than those in middle adolescence (mean difference = 0.36, p = 0.013).ConclusionDuring the pandemic, majority of school-going adolescents employed adaptive coping mechanisms, including positive emotional regulation and social support. However, compared to males, females employed resignation more frequently. Moreover, middle-aged adolescents had a greater propensity for negative emotion copying. Findings from this study contribute valuable information for the development of targeted interventions and support mechanisms for adolescents facing unprecedented challenges.

Sex gaps and age differences in the structure of academic cyberloafing from early to middle adolescence: A network analysis.

Academic cyberloafing refers to students' engagement in non-learning-related online activities during online courses, which can negatively affect their academic performance. Prior studies investigated cyberloafing primarily in the workplace, neglecting core behaviors and interactions among academic cyberloafing in educational contexts. This study employed network analysis to capture academic cyberloafing as an interactive behavior network to explore the core behavioral patterns of academic cyberloafing and the interactions between these behaviors. A total of 3537 adolescents (Mage = 12.49; 53.7% boys and 46.3% girls) in China were included in this study. The findings indicated that "seeking gossip news" and "watching short videos" are central behaviors. Among boys, "browsing nonacademic web pages" and "watching short videos" are central behaviors; "seeking gossip news" is the most central behavior among girls. Furthermore, in early adolescence, central behaviors encompass "chatting privately" and "seeking gossip news"; in middle adolescence, central behaviors include "seeking gossip news" and "watching short videos."Additionally, the comparisons indicated that academic cyberloafing networks (between boys and girls; between early and middle adolescence) show a similar structure and global strength but differ in specific academic cyberloafing associations. As adolescents of different sexes and ages engage in academic cyberloafing differently, tailored education interventions can be implemented to address unregulated cyberloafing.

Family structure and material hardship: Child and adolescent pathways to health and well‐being

AbstractChildren's early experiences have potential to shape their development through early childhood, middle childhood, and into adolescence. Family structure at birth and material hardship may offer insight into how children's health and well‐being are shaped within their family of origin. The current paper examined (a) the association between family structure at birth and material hardship 1‐year post‐birth and (b) the differential impact of race on the associations between family structure and material hardship. We further explored the association between family structure and material hardship on self‐reported health in (a) middle childhood and (b) adolescence. Using the Future of Families and Child Wellbeing dataset, an ordinary least squares (OLS) regressions and structural equation path models (SEM) were used to examine associations between family structure, material hardship, and health outcomes (body mass index [BMI], anxiety, and suicidal ideation). Results indicated that family structure predicted material hardship at 1‐year until maternal characteristics were taken into account. Race/ethnicity did not moderate the association. Also, family structure at birth was indirectly associated with youth anxiety through material hardship but did not account for BMI or sucidical ideation. Social supports and state policies should prioritize maternal health access and ensure families are able to meet their basic needs to mitigate children's health risks.

Cascading Effects of the Family Check-Up on Mothers' and Fathers' Observed and Self-Reported Parenting and Young Adult Antisocial Behavior: a 12-Year Longitudinal Intervention Trial.

Over a 12-year period, this study examined the effects of the Family Check-Up preventive intervention model on both observed and self-reported parenting behaviors of mothers and fathers as well as how those parenting behaviors were associated with young adult antisocial behavior. Teachers identified 641 early adolescent youth from school settings to be at elevated risk for the development of externalizing behavior and/or substance use. These youth and their families were randomly assigned to the Family Check-Up intervention model (consisting of an adaptive, multi-tiered model of support, including a school-based family resource room, the Family Check-Up, and targeted follow-up services) or a control condition. Using an intent-to-treat approach, the Family Check-Up intervention model positively impacted mothers' observed parenting approximately 5years later in middle adolescence but was not associated with changes in fathers' observed or self-reported parenting. Mothers' observed adaptive parenting and fathers' self-reported adaptive parenting in middle adolescence were associated with lower risk for young adult antisocial behavior. The cascading effects of brief, family-focused interventions are discussed along with implications for the measurement of parenting in mothers and fathers in the context of preventive intervention trials.

Longitudinal Change in Appearance-Related Social Media Consciousness and Depressive Symptoms: A Within-Person Analysis during Early-to-Middle Adolescence

Online appearance preoccupation may put adolescents at risk of developing mental health challenges, perhaps especially during early-to-middle adolescence. A random intercept cross-lagged panel model assessed within-person associations between appearance-related social media consciousness and depressive symptoms over three time-points with three months between waves. The sample (n = 1594) included U.S. adolescents aged 11–15 (Mage = 13; 47% girls, 46% boys, 7% another gender; 37% Latine, 33% White, 18% Black, 7% Asian). Within-person increases in appearance-related social media consciousness were associated with subsequent increases in depressive symptoms, but not vice versa. There was no evidence of gender differences and results were robust to controlling for both time on social media and offline self-objectification. Thus, online appearance concerns precede mental health challenges during early and middle adolescence.

School prevention of non-consensual sexting among middle adolescents: Does sexual preoccupation awareness matter?

Although non-consensual sexting seems to concern not only adults but also middle adolescent students, with detrimental consequences on their well-being, the related research-based effective school prevention programs are almost absent. Furthermore, there is an unanswered research question as to whether sex-related issues, such as sexual preoccupation, matters in adolescents’ non-consensual sexting and its prevention. The present study investigated the effectiveness of a school-based intervention against non-consensual sexting among middle adolescents, based on the European funded program TABBY (Threat Assessment of Bullying Behavior in Youth). Furthermore, the predictive role of sexual preoccupation was examined. Overall, 280 Greek students from randomly selected junior high school responded to self-report scales on non-consensual sexting and sexual preoccupation. Based on an experimental longitudinal research design, only the experimental (N = 131), but not the control group of students (N = 149), participated in the intervention. To test the effectiveness of the intervention, both student groups completed the scales before (1st phase), immediately after (2nd phase), and six months after the intervention (3rd phase), which was implemented by trained teachers. The results showed both, the short-term and long-term effectiveness of the intervention. Also, the study highlighted the significant contribution of sexual preoccupation awareness in reducing non-consensual sexting, especially immediately after and six months after the intervention. The study implies the necessity to adapt existed prevention programs to the specific parameters of non-consensual sexting, integrating at the same time sexual preoccupation awareness activities to better address this issue.

Effects of Developmental Timing on Cognitive and Behavioral Profiles in Fetal Alcohol Spectrum Disorder: Considerations for Education.

Associations and families demand the need to raise awareness of the implications in the cognitive and behavioral development of children with Fetal Alcohol Spectrum Disorder (FASD) that affect their learning and school participation. This study aims to generate a profile of executive and behavioral functioning in children and adolescents diagnosed with FASD. A probabilistic sampling by clusters (associations for individuals with FASD) is applied. The sample is composed of 66 families from three associations. The BRIEF-2 and SENA tests were administered to assess executive and behavioral functioning domains. Data analysis found that the executive and behavioral functioning profile of individuals with FASD varies with age, with greater impairment in middle and late adolescence. Likewise, the domain of executive functioning most affected in any of the developmental stages is working memory. Finally, cognitive impairment in the executive functioning domains has a direct impact on the social and adaptive functioning of people with FASD.

Change in prosocial development following adversity exposure among U.S. Mexican youth

IntroductionAltruistic prosocial behaviors (i.e., actions primarily intended to benefit others with little to no regard for self-benefit) are of special interest to researchers interested in growth in character strengths following exposure to adversity and trauma (referred to as the altruism-born-of-suffering hypothesis). The present study was designed to examine this hypothesis. Changes in prosocial behaviors following trauma exposure and whether problem-focused coping and familism facilitated prosocial behaviors were investigated in U.S. Mexican youth.MethodsA total of 749 Mexican-origin students (initial M age = 10.42 years, SD = 0.55; 48.9% girls) from the U.S. Southwest completed surveys from 5th grade to early adulthood.ResultsU.S. Mexican girls who reported earlier trauma exhibited increases in altruistic behaviors into young adulthood but only when they reported relatively high levels of familism values in middle adolescence. A similar trend pattern was found for U.S. Mexican boys but only when they expressed relatively high levels of problem-focused coping in middle adolescence. There was other evidence of significant relations between both familism and problem focused coping and prosocial behaviors in these youth.DiscussionFindings demonstrate the potential for prosocial development across adolescence to young adulthood among trauma-exposed youth from a U.S. ethnic/racial minority background.

Chronotype and depression in adolescence: Results from a UK birth cohort study

AbstractBackgroundResearch has established a bidirectional association between sleep disturbances and depression in both adults and youth, as well as links between depression and circadian rhythms and chronotype, predominantly in adult populations. However, the link between chronotype and depression in the general adolescent population, independently of poor sleep and prior mental health problems, remains unclear.MethodsThis study investigated the association between time‐to‐sleep (TTS) and depressive symptoms in middle adolescence (age 14 years) using data from a large, nationally representative birth cohort from the UK. The relationship between TTS and self‐reported number of depressive symptoms was adjusted for individual, family, and neighborhood characteristics, including sleep quality, earlier mental health, diet and family meal routines, body‐mass index, screen time, physical activity, chronic illness, special educational needs, peer victimization, socioeconomic status, maternal mental health, area safety and the built environment (air pollution).ResultsAn “evening” chronotype was positively associated with depressive symptoms, and biological sex moderated this association—with eveningness being more strongly related to depressive symptoms in females. TTS inconsistency between non‐school and school nights was associated with depressive symptoms and sleeping later on non‐school nights predicted fewer depressive symptoms. The results were robust to further sensitivity analyses that used the sleep midpoint on non‐school nights and controlled for sleep duration.LimitationsThis was a correlational study. The independent and dependent variables were self‐reported, and there was no clinical screening for sleep disorders. The TTS variables were provided in crude hour slots.ConclusionsA robust association was found between evening chronotype and depressive symptoms in middle adolescence, even after adjustment for a wide range of confounders. Eveningess and depressive symptoms were more strongly associated in females.

Bullying Victimization as an Adverse Experience for Psychosocial Adjustment among Irish Adolescents

AbstractThis study investigates the long-term effects of victimization from middle adolescence to late adolescence and early adulthood, examining emotional and behavioral problems, peer relationships, and smoking habits and sleeping difficulties. The study also explores how these outcomes can persist into early adulthood, taking into consideration early victimization experiences, gender, cognitive ability, and family social class. The total sample included 7525 participants, spanning the ages of 13, 17, and 20, from the Child Cohort of the Growing Up in Ireland study (48.9% male). The path analysis model suggests that victimization is associated with behavioral problems at age 17, and it is also linked to emotional problems and sleeping difficulties at both ages 17 and 20. Additionally, sleeping difficulties, smoking habits, and indices of emotional and behavioral adjustment exhibit some stability between ages 13 and 17, as well as 17 and 20. Theoretical and practical implications are discussed.