Latent profile analysis of adolescent temperament: Relations to happiness and health in adulthood.

INTRODUCTION: This study provides long-term evidence that profiles of temperament during adolescence are associated with happiness and health over two decades later. METHODS: Data are based on the ongoing Fullerton Longitudinal Study, a community-based sample in the United States. At 14 and 16 years, adolescents (N = 111; 52% male, 90% Euro-American) and their mothers (N = 105) completed the Dimensions of Temperament Survey-Revised, a scale designed specifically to assess adolescents' temperament across a set of attributes. When adolescents reached age 38 years in 2017, they completed scales measuring comprehensive happiness and global health. RESULTS: Latent profile analysis (LPA), a person-centered approach, was conducted for adolescents' and for mothers' temperament ratings separately. Distinct two-profile solutions, labeled more regulated and less regulated, emerged for each informant. These were comparable in features across informants. Only the adolescents' self-rated profiles, controlling for sex and family SES, revealed a conceptually meaningful and statistically significant relation to the distal outcomes of health and happiness two decades later. CONCLUSIONS: Adolescents with temperament profiles characterized as more regulated, in contrast to less regulated, reported being happier and healthier upon entering middle adulthood. Implications for intervention are presented.

Positive family relationships across 30 years: Predicting adult health and happiness.

In this prospective study, we examined the link between positive family relationships during childhood and adolescence and health and happiness three decades later in middle adulthood. We also investigated the stability of positive family relationships into adulthood as one possible pathway underlying this long-term association. Data were from the Fullerton Longitudinal Study (FLS) an ongoing investigation in the United States initiated in 1979 when children were aged 1 year with the most recent data collected in 2017. A cross-informant methodology was employed in which mothers and children independently completed the Positive Family Relationships (PFR) scale annually when children were of ages 9-17 years. When study children reached age 38, they reported on their current PFR, global health, and comprehensive happiness. Structural equation models revealed that children's perceptions of the family during childhood and adolescence predicted both their health and happiness at age 38. Mothers' perspectives of PFR predicted greater adult children's health, but did not predict their happiness. Associations were independent of family socioeconomic status, gender, intelligence, and extraversion. Moreover, while controlling for behavior problems (proxy for health) and happiness at age 17, both children's and mothers' early PFR related to PFR at 38 years, which in turn, predicted increased health and happiness at age 38, thus providing evidence for a pathway underlying this long-term connection. Our prospective findings revealed that families in which members get along well and support each other during the childhood and adolescent years furnish a foundation for positive family relationships in adulthood, which are associated with greater health and happiness. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Reliability and validity of the Parent-Child Relationship Inventory (PCRI): evidence from a longitudinal cross-informant investigation.

Psychometric properties of the Parent-Child Relationship Inventory (PCRI) were examined using data collected from adolescents and their parents in the Fullerton Longitudinal Study. Results revealed acceptable internal consistency for most scales and moderate to high 1-year stability for all scales. Both parents' PCRI scores correlated with their views of family climate. Cross-informant concordance was pervasive and strong between mothers' PCRI scores and adolescents' perceptions of the parent-child relationship and family climate; however, convergence was not evident between fathers' and adolescents' reports. Additionally, poor performance was observed for the Autonomy scale. In conjunction with other research on parent-adolescent relationships, concerns are raised regarding the utility of scales to contrast mother-adolescent with father-adolescent relationships.