Both organismic and intentional self-regulation processes must be integrated across childhood and adolescence for adaptive developmental regulations to exist and for the developing person to thrive, both during the first two decades of life and through the adult years. To date, such an integrated, life-span approach to self-regulation during…

Intentional self-regulation (ISR) undergoes significant development across the life span. However, our understanding of ISR's development and function remains incomplete, in part because the field's conceptualization and measurement of ISR vary greatly. A key sample case involves how Baltes and colleagues' Selection, Optimization,…

Contemporary developmental theory is framed by relational developmental systems models that emphasize that change across life occurs through mutually regulative relations between individuals and their contexts (represented as individual [left arrow][right arrow] context relations). Within these models, all contextual levels are involved in these…

We introduce this special issue on the individual and contextual bases of adolescent thriving by describing the relational developmental systems theory-based, positive youth development (PYD) perspective that frames much of contemporary research about health and positive development across the adolescent period and that, more specifically, frames…

The positive youth development (PYD) perspective emphasizes that thriving occurs when individual [double arrow] context relations involve the alignment of adolescent strengths with the resources in their contexts. The authors propose that a key component of this relational process is the strength that youth possess in the form of self-regulatory…

This study assessed 1574 Grades 5 to 11 youth (63.6% female) from the 4-H Study of Positive Youth Development (PYD), a longitudinal study involving U.S. adolescents, to assess if patterns of intentional self regulation (ISR) existed; whether these trajectories differed in relation to several Grade 5 parenting characteristics; and whether ISR…

The understanding of positive development across adolescence rests on having a valid and equivalent measure of this construct across the breadth of this period of life. Does the Positive Youth Development (PYD) construct based on the Five Cs model have satisfactory psychometric properties for such longitudinal measurement invariance? Using…