Childhood socio‐economic disadvantage predicts reduced myelin growth across adolescence and young adulthood

Socio‐economic disadvantage increases exposure to life stressors. Animal research suggests early life stressors impact later neurodevelopment, including myelin developmental growth. To determine how early life disadvantage may affect myelin growth in adolescence and young adulthood, we analysed data from an accelerated longitudinal neuroimaging study measuring magnetisation transfer (MT), a myelin‐sensitive marker, in 288 participants (149 female) between 14 and 25 years of age at baseline. We found that early life economic disadvantage before age 12, measured by a neighbourhood poverty index, was associated with slower myelin growth. This association was observed for magnetization transfer in cortical, subcortical and core white matter regions, and also in key subcortical nuclei. Participant IQ at baseline, alcohol use, body mass index, parental occupation and self‐reported parenting quality did not account for these effects, but parental education did so partially. Specifically, positive parenting moderated the effect of socio‐economic disadvantage in a protective manner. Thus, early socioeconomic disadvantage appears to alter myelin growth across adolescence. This finding has potential translational implications, including clarifying whether reducing socio‐economic disadvantage during childhood, and increasing parental education and positive parenting, promote normal trajectories of brain development in economically disadvantaged contexts.     

High prevalence of depression symptomology among adolescents in Soweto,South Africa associated with being female and cofactors relating to HIV transmission

Adolescents in HIV endemic settings are a priority demographic with respect to HIV prevention. Some studies have shown that behaviours associated with HIV transmission, may be mediated by mental health factors such as depression. We undertook this study to explore the prevalence and associations of depression symptomology among adolescents living in the HIV endemic community of Soweto, South Africa through the Botsha Bophelo Adolescent Health Study (BBAHS). We estimated the prevalence of depression using the Centre for Epidemiological Studies of Depression Scale, using a score of ≥24 to indicate ‘probable depression’. Among the 789 adolescents (14–19 years) with depression scores, 262 (33%) met the criteria for probable depression (99 [38%] men and 163 [62%] women; p = 0.061). In multivariable logistic regression, factors independently associated with depression included being female (AOR = 2.44, 95% CI: 1.45–4.00), marijuana use (AOR = 2.67, 95% CI: 1.21–5.93), physical violence (AOR = 1.63, 95% CI: 1.01–2.62), pregnancy (AOR = 2.00, 95% CI: 1.03–3.88) and incarceration (AOR = 2.09, 95% CI: 0.99–4.42). These data indicate that a concerning proportion of adolescents in Soweto may be suffering from depression and those screened as potentially depressed, were more likely to be female and have cofactors relating to increased risk for HIV. As part of a comprehensive HIV prevention strategy, we recommend that depression screening for adolescents be integrated into public and school health programs that triage those suffering into treatment programs.     

Young drivers who continue to drive while sleepy: What are the associated sleep‐ and driving‐related factors?

Crashes due to sleepiness account for a substantial proportion of road crash incidents. The purpose of the current study was to examine several sleep‐related factors and driving‐related factors for their association with self‐reports of continuing to drive while sleepy. In total 257 young drivers aged 18–25 years completed an online survey that assessed factors such as sleep quality, sleep duration and consistency, excessive daytime sleepiness, experiences with sleepiness and their driving‐related behaviours. The results demonstrate that being older, having a perceived ability to overcome sleepiness, committing more highway code violations and having experienced a sleep‐related close call were positively associated with an increased likelihood of continuing to drive while sleepy. The obtained results highlight the acceptance of risky driving behaviours among some younger drivers. Younger drivers’ risky driving behaviour is certainly a road safety concern given the impairment associated with sleepiness and their over‐representation in road crash incidents.     

Young children’s emergent science competencies in everyday family contexts: a case study

To address the lack of research in early science learning and young children’s informal science experiences, this exploratory case study investigated a 7-year-old girl’s (Abigail) emergent science competencies and how they are related to her science experiences in everyday family contexts. Data sources included observations, interviews, parent journals, and the child’s digital journals that were collected over six months. Open-ended coding and constant comparison were used to analyse data. Findings revealed that Abigail’s emergent science competencies were naïve but playful and included a developing, but sophisticated, understanding of the nature of science; family learning included both spontaneous and purposeful learning that contributed to her naïve theories and islands of expertise; and her mother’s scaffolding played an important role in her emergent science competencies. The study suggests ways to connect formal science learning with informal science engagement to further young children’s science competencies.     

Occupational attainment and depressive symptoms in young adulthood

Past studies have shown that various aspects of occupational attainment (unemployment, job instability, low occupational status, and low earnings) are associated with poor mental health, but each of these studies focused on one or two aspects of occupational attainment. Consequently, it remains unclear whether their associations are independent of each other. Further, little is known about whether negative self‐assessments of occupational attainment are linked to poor mental health. We sought to overcome these limitations of past research while focusing on depressive symptoms as a mental health outcome and young adulthood as a life stage context. The study analysed U.S. data from the National Longitudinal Study of Adolescent to Adult Health (n = 13,178) using ordinary least square models. The analysis showed that all aspects of occupational attainment were associated with depressive symptoms in the expected directions. Further, unemployment, job instability, and negative self‐assessment of career progress showed stronger associations, and those associations were independent of other occupational attainment variables. Overall, the results suggested that understanding the association between occupational attainment and mental health requires close attention to the life stage context.     

Commentary: Climate change worry among adolescents—on the importance of going beyond the constructive–unconstructive dichotomy to explore coping efforts—a commentary on Sciberras and Fernando (2021)

This opinion piece comments on Sciberras and Fernando’s (2021) article in which an 8-year longitudinal study is presented. The authors investigate trajectories of climate change worry through adolescence and associations with measures of depression and engagement with news and politics in late adolescence. Their objective is to explore whether climate change worry is a constructive or unconstructive psychological phenomenon. Their conclusion is that it is mainly an adaptive response but, for some groups, such as young people with pre-existing mental health problems, climate change worry could exacerbate their difficulties. In this commentary, it is argued that since research has found diverse results regarding whether climate worry is adaptive or not, one should perhaps not focus so much on the emotion itself, but rather on how people cope with their worry. Some examples of how young people cope with climate change are presented, and it is argued that taking account of these coping strategies in future longitudinal studies would be beneficial.