UCLA

This dissertation explores the complex connection between the social ecosystem and mental health development during the transition to adulthood. Utilizing a comprehensive approach, the social ecosystem is evaluated through three fundamental constructs: social support, social connectedness, and social capital. Mental health is assessed holistically, encompassing mental health conditions, well-being evaluations, and perceived mental health needs. Embracing an interdisciplinary perspective, the conceptual framework integrates population health strategies with a Life Course Health Development (LCHD) perspective grounded in developmental psychology principles. The primary objective is to advance our understanding of how youth’s social ecosystem interacts with other developmental factors to shape mental health. The first paper examines factors within youth’s social ecosystem fostering resilience amid adverse family environments. The second paper assesses the impact of social connectedness and social media on youth mental health. The third paper explores how youth social support influences mental health help-seeking behavior. In conclusion, this dissertation emphasizes the importance of promoting positive mental health strategies, advocating for relational agency, and considering the lasting effects of social factors on mental health. The insights gleaned from these papers are instrumental in developing effective interventions and policies to support the mental well-being of young people. As the exploration of these dynamics continues, collaborative efforts across disciplines remain crucial for sustaining the mental well-being of youth and future generations.