Previous research has shown inconsistent time trends in adolescent mental well-being, but potential underlying mechanisms for such trends are yet to be examined. This study investigates cross-national time trends in adolescent mental well-being (psychosomatic health complaints and life satisfaction) in mainly European countries and the extent to which time trends in schoolwork pressure explain these trends. Methods: Data from 915,054 adolescents from 36 countries (50.8% girls; mean age ¼ 13.54; standard deviation age ¼ 1.63) across five Health Behaviour in School-aged Children surveys (2002, 2006, 2010, 2014, and 2018) were included in the analyses. Hierarchical multilevel models estimated cross-national trends in adolescent mental well-being and schoolwork pressure. We also tested whether schoolwork pressure could explain these trends in mental well-being. Results: A small linear increase over time in psychosomatic complaints and schoolwork pressure was found. No change in life satisfaction emerged. Furthermore, there was large cross-country variation in the prevalence of, and trends over time in, adolescent mental well-being and IMPLICATIONS AND CONTRIBUTION

The salutogenic model has led to revolutionary changes in the study of health. In recent years, a large amount of research has been carried out on the relationship between sense of coherence and health, but relatively little is known about sense of coherence in adolescence. This study is a systematic review of the studies that looked at sense of coherence in adolescent samples. Valuable information is provided regarding the characteristics of the samples, the reliability of the sense of coherence scale versions, the influence of demographic variables and how family, school, peers and neighbourhood impact sense of coherence development. Furthermore, future directions for the study of sense of coherence in adolescence are provided.

Objectives: Teacher connectedness is an important factor for young people's wellbeing. The aim of this paper was to examine teacher connectedness in detail and its potential association with emotional well-being. More specifically, we set out to analyse whether teacher connectedness acted as a universal asset for boys and girls of different ages and countries as well as across adolescents with differing perceptions of their performance at school. Methods: Sample consisted of 9,444 young people aged 11, 13 and 15 that had taken part in the WHO collaborative survey Health Behaviour in School-aged Children in Spain and England. After examining differences in teacher connectedness associated with demographic factors, we used general linear models to analyse the relationship between teacher connectedness and emotional well-being (including interactions teacher connectedness by country) across different age and performance-derived groups. Results: Results indicated some significant differences in teacher connectedness associated with age, country, and perceived performance but a consistent positive association between teacher connectedness and emotional well-being regardless of demographic factors, country and perceptions of school performance. Older adolescents and low achievers reported lower level of connectedness to their teachers but the association between teacher connectedness and emotional well-being operated irrespective of adolescents' age and perceived performance at school. Conclusions: Results support the perspective that teacher connectedness can act as a significant health asset that operates irrespective of key demographic factors, while they point to some inequalities in teacher connectedness associated to age and performance at school. These findings have significant implications for health promotion interventions.

The aim of this scoping review was to map and summarise research relating to school and teacher connectedness, in order to increase current understanding of the ways these terms have been conceptualised in adolescent research. Specifically, this scoping review focuses on the analysis of the actual definitions used and the ways in which school connectedness and teacher connectedness are operationalised in existing measures. Using the terms connectedness, teacher and school as keywords, we searched SCOPUS, Web of Science, ERIC, the Cochrane Library and the EPPI Centre Database of Education Research for relevant peer-review articles published in English from 1990 to 2016. 350 papers were selected for the review. Many studies failed to provide a definition of school or teacher connectedness and there were some differences in the way these constructs were operationalised in the main measures. Future research should be thorough in the definition of these constructs, and ensure consistency between the definition used and the operationalisation of the connectedness construct in the selected measure. Unpacking the global concept of school connectedness and examining the role of its different components (global feelings towards school, teacher connectedness, relationships with classmates, etc.) separately may also contribute to building a more coherent body of evidence in this area. Reflecting on the place of school and teacher connectedness in the broader context of the literature on school climate and bridging distances between the research on school connectedness and that on related constructs is another necessary step to move this field forward.

The aim of this study was to examine the role of school variables and sense of coherence (SOC) in the explanation of health. For this purpose, data were collected from a representative sample of adolescents, aged 13 to 18 years, selected for the Health Behavior in School-aged Children survey in Spain. Using Structural Equation Modelling, three nested models were tested that represented different hypothesized models of the relationships among school factors, SOC and health. According to goodness-of-fit indices, in the best model, school-related stress and SOC mediated the influence of support from classmates and teachers on health, and SOC had a direct effect on stress. The results supported the idea that a supportive school climate and SOC are relevant to adolescents' health. Furthermore, SOC was the most influential variable; apart from its direct positive effect on health, SOC seemed to condition the degree to which students perceived school demands to be stressful. Specifically, students with a high SOC were less likely to suffer from high levels of school-related stress.