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Introduction: This study examined profiles of social connectedness among early adolescents in grade 7 before the COVID-19 pandemic was declared (Winter 2020), and in grade 8 during the second Wave of the pandemic (Winter 2021)., Method: Linked data from 1753 early adolescents (49% female) from British Columbia, Canada who completed the Middle Years Development Instrument survey in grades 7 and 8 were used. Participants reported on life satisfaction, depressive symptoms, and connectedness with peers and adults at home, school and in the community. We used Latent Profile Analysis to identify connectedness profiles at both time points, and Latent Transition Analysis to examine transitions in connectedness profiles over time. Multiple regression analyses examined the associations between profile membership in grade 7 and mental well-being in grade 8, and the associations between transitions in profile membership (i.e., increase vs. decrease in connectedness over time) and mental well-being., Results: Connectedness in multiple domains in grade 7 was related to significantly higher levels of mental well-being in grade 8, controlling for demographics, well-being in grade 7, and COVID-related mental health worries. Well-being was highest when students felt highly connected in all domains and lowest when they felt lower levels of connection. Increases in connectedness were associated with improvements in mental well-being and decreases with a decline in well-being over time., Conclusions: Experiencing connectedness with peers and adults is critical for the mental well-being in early adolescence. Providing opportunities to connect is important in the context of major societal challenges such as the COVID-19 pandemic., (© 2023 The Authors. Journal of Adolescence published by Wiley Periodicals LLC on behalf of Foundation for Professionals in Services to Adolescents.)

Purpose: Evidence from systematic reviews suggests that adult immigrants living in areas of higher immigrant density (areas with a higher proportion of foreign-born residents) tend to experience fewer mental health problems-likely through less discrimination, greater access to culturally/linguistically appropriate services, and greater social support. Less is known about how such contexts are associated with mental health during childhood-a key period in the onset and development of many mental health challenges. This study examined associations between neighbourhood immigrant density and youth mental health conditions in British Columbia (BC; Canada)., Methods: Census-derived neighbourhood characteristics were linked to medical records for youth present in ten of BC's largest school districts from age 5 through 19 over the study period (1995-2016; n = 138,090). Occurrence of physician assessed diagnoses of mood and/or anxiety disorders, attention deficit hyperactivity disorder (ADHD), and conduct disorder was inferred through International Classification of Diseases (ICD) diagnostic codes in universal public health insurance records. Multi-level logistic regression was used to model associations between neighbourhood characteristics and odds of diagnoses for each condition; models were stratified by generation status (first-generation: foreign-born; second-generation: Canadian-born to a foreign-born parent; non-immigrant)., Results: Higher neighbourhood immigrant density was associated with lower odds of disorders among first-generation immigrant youth (e.g., adjusted odds of mood-anxiety disorders for those in neighbourhoods with the highest immigrant density were 0.67 times lower (95% CI: 0.49, 0.92) than those in neighbourhoods with the lowest immigrant density). Such protective associations generally extended to second-generation and non-immigrant youth, but were-for some disorders-stronger for first-generation than second-generation or non-immigrant youth., Conclusions: Findings suggest there may be protective mechanisms associated with higher neighbourhood immigrant density for mental health conditions in immigrant and non-immigrant youth. It is important that future work examines potential pathways by which contextual factors impact immigrant and non-immigrant youth mental health., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.)

Background: Several studies have assessed the relationship between exposure to natural environments (NEs) and childhood mental health and development. In most cases, a positive association has been found, but results are inconsistent, and the strength of association is unclear. This inconsistency may reflect the heterogeneity in measurements used to assess NE., Objectives: This systematic review aims to identify the most common NE metrics used in childhood mental health and development research. Our second aim is to identify the metrics that are most consistently associated with health and assess the relative strength of association depending on type of NE exposure measurement, in terms of metric used (i.e., measurement technique, such as remote sensing), but also rate (i.e., spatial and temporal exposure)., Methods: We used the PRISMA protocol to identify eligible studies, following a set of pre-defined inclusion criteria based on the PECOS strategy. A number of keywords were used for retrieving relevant articles from Medline, Embase, PsychINFO, and Web of Science databases between January 2000-November 2020. From these, we extracted data on type of NE measurement and relative association to a number of indicators of childhood mental health and development. We conducted a systematic assessment of quality and risk of bias in the included articles to evaluate the level of evidence. Case studies and qualitative studies were excluded., Results: After screening of title (283 studies included), abstract, and full article, 45 studies were included in our review. A majority of which were conducted in North America and Europe (n = 36; 80%). The majority of studies used land use or land covers (LULC, n = 24; 35%) to determine exposures to NEs. Other metrics included the normalized difference vegetation index (NDVI), expert measures (e.g., surveys of data collection done by experts), surveys (e.g., self-reported assessments), and use of NE (e.g., measures of a participant's use of NE such as through GPS tracts or parent reports). Rate was most commonly determined by buffer zones around residential addresses or postal codes. The most consistent association to health outcomes was found for buffers of 100 m, 250 m, 500 m, and within polygons boundaries (e.g., census tracts). Six health categories, academic achievement, prevalence of doctor diagnosed disorders, emotional and behavioral functioning, well-being, social functioning, and cognitive skills, were created post hoc. We found sufficient evidence between NDVI (Landsat) and emotional and behavioral well-being. Additionally, we found limited evidence between LULC datasets and academic achievement; use of NE, parent/guardian reported greenness, and expert measures of greenness and emotional and behavioral functioning; and use of NE and social functioning., Discussion: This review demonstrates that several NE measurements must be evaluated further before sufficient evidence for a potential association between distinct NE exposure metrics and childhood mental health and development can be established. Further, we suggest increased coordination between research efforts, for example, by replication of studies and comparing different NE measurements systematically, so that effect sizes can be confirmed for various health outcomes. Finally, we recommend implementing research designs that assess underlying pathways of nature-health relations and utilize measurement techniques that adequately assess exposure, access, use, and perception of NEs in order to contribute to a better understanding of health impacts of surrounding natural environments., (Copyright © 2021 Elsevier GmbH. All rights reserved.)

Using a linked population-based database established on healthcare, socio-economic, and survey datasets in British Columbia, Canada, we examined how biological, socio-demographic, and socio-economic status (SES) factors at birth related to children's emotional development and mental health. One analysis examined teacher-rated anxiety, hyperactivity, and aggression for kindergarten children (M age  = 5.7; n = 134,094). Another analysis examined administrative healthcare records comprising of physician-assigned diagnostic codes for mental health conditions (conduct disorder, attention deficit hyperactivity disorder, anxiety disorder and depression) from ages 5 through 15 (n = 89,404). Various factors at birth, including gestational age, birthweight, and maternal demographics, were related to emotional development and mental health in childhood. Across outcomes, low SES indicated detrimental associations with various aspects of children's emotional development and mental health (e.g., adjusted odds of mental health conditions were 25-39% higher for children of low income families versus others). Findings reinforce evidence that poverty (reduction) is a primary public health issue.

Extracurricular participation plays an important role in positive youth development. Yet, little is known about the stability and change in extracurricular participation from middle childhood to early adolescence. Also, there is a gap in knowledge about the underlying processes that drive developmental outcomes associated with extracurricular participation. The present study examined transitions in extracurricular participation from grade 4 to 7, and investigated whether shifting from non-participation to participation in activities was associated with better mental health, considering peer belonging as a mediator. Latent Class Analyses of early adolescents' (50% female) self-reports on the Middle Years Development Instrument in grades 4 and 7 (N = 10,149) revealed four clusters of extracurricular involvement at both grade levels (i.e., "no activities", "all activities", "sports only", "individual activities"). Latent Transition Analysis showed that young people were most likely to stay in the same activities cluster from grade 4 to 7. About 10% were non-participants in grade 4 and had moved to activities by grade 7. In this subgroup, moving from non-participation to both sports and to all activities was associated with better mental health over time; this pathway was fully mediated by higher levels of peer belonging. The results suggest that supporting non-participants to join extracurricular activities can have implications for their mental health. Practical implications for communities, such as removing potential barriers to involvement before the onset of adolescence, are discussed.

Objectives: The present study examined the degree to which early adolescents' relationship experiences in school (i.e., peer group belonging, peer victimization, and supportive relationships with adults)-at the individual level and at the school-level-were associated with their dispositional optimism, concurrently and over time., Method: Self-report data from over 4000 4th and 7th graders were obtained via a population-level measure designed to assess students' supportive relationships, well-being, and resilience (i.e., the Middle Years Development Instrument). An indicator for family income (SES) was obtained through tax filer information., Results: Multilevel modeling revealed that in Grade 4, greater peer belonging, fewer experiences of peer victimization, and higher levels of adult support in school were linked to higher optimism, above and beyond the effects of sex, age, English as a Second Language (ESL), and SES. Additionally, school-wide levels of peer belonging and adult support (i.e., indicators of a supportive social school climate) were significant positive school-level predictors of optimism. Longitudinally, school-wide peer belonging in Grade 4 was associated to increases in students' optimism from 4th to 7th grade., Conclusions: The findings suggest that positive relationship experiences in school are key contributors to positive mental health, over and above the absence of negative relationship experiences (i.e., victimization). These findings also suggest that being embedded in a school with a positive social relational climate contributes to students' current and future positive mental health, over and above individual relationships with peers and adults. The present research extends previous research by identifying contextual assets that are linked to dispositional optimism and can be applied in the context of school-based intervention programs to promote positive mental health in schools., (Copyright © 2018. Published by Elsevier Ltd.)

Objectives: Early identification of distinct patterns of child social-emotional strengths and vulnerabilities has the potential to improve our understanding of child mental health and well-being; however, few studies have explored natural groupings of indicators of child vulnerability and strengths at a population level. The purpose of this study was to examine heterogeneity in the patterns of young children's social and emotional health and investigate the extent to which sociodemographic characteristics were associated., Design: Cross-sectional study based on a population-level cohort., Setting: All kindergarten children attending public schools between 2004 and 2007 in British Columbia (BC), Canada., Participants: 35 818 kindergarten children (age of 5 years) with available linked data from the Early Development Instrument (EDI), BC Ministry of Health and BC Ministry of Education., Outcome Measure: We used latent profile analysis (LPA) to identify distinct profiles of social-emotional health according to children's mean scores across eight social-emotional subscales on the EDI, a teacher-rated measure of children's early development. Subscales measured children's overall social competence, responsibility and respect, approaches to learning, readiness to explore, prosocial behaviour, anxiety, aggression and hyperactivity., Results: Six social-emotional profiles were identified: (1) overall high social-emotional functioning, (2) inhibited-adaptive (3) uninhibited-adaptive, (4) inhibited-disengaged, (5) uninhibited-aggressive/hyperactive and (6) overall low social-emotional functioning. Boys, children with English as a second language (ESL) status and children with lower household income had higher odds of membership to the lower social-emotional functioning groups; however, this association was less negative among boys with ESL status., Conclusions: Over 40% of children exhibited some vulnerability in early social-emotional health, and profiles were associated with sociodemographic factors. Approximately 9% of children exhibited multiple co-occurring vulnerabilities. This study adds to our understanding of population-level distributions of children's early social-emotional health and identifies profiles of strengths and vulnerabilities that can inform future intervention efforts., Competing Interests: Competing interests: None declared., (© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.)