The study examined the contribution of reinforcement sensitivity to childhood personality at three levels of the hierarchical structure, mid-level traits, the Big Five and two higher-order factors, and the moderating role of sex and age in a sample of 3-18-year-olds. The canonical correlation analyses indicated that reinforcement sensitivity and…

In this paper, we review findings from Project Competence on the nature of personality development from middle childhood through the early adult years and place these findings in the context of current research on temperament and personality traits. In a series of studies using data drawn from the Project Competence longitudinal project, we have…

Noting that some forms of solitude may reflect maladaptation, while others may not, this book seeks to promote better understanding of the developmental meanings, causes, and courses of social solitude in childhood. The five sections of the book cover conceptual and methodological issues; biological and familial factors; social behaviors, skills,…

Examined relation of 7-year olds' attachment representations to later behavior and academic competency during middle childhood and adolescence. Controlled for social class, gender, IQ, perspective-taking ability, and prior competency. Found that attachment representations did not predict disruptive behavior or extroversion, but secure…