The development of the ability to categorize speech sounds is often viewed as occurring primarily during infancy via perceptual learning mechanisms. However, a number of studies suggest that even after infancy, children's categories become more categorical and well defined through about age 12. We investigated the cognitive changes that may be…

Advances in theories of adolescent development and positive youth development have greatly increased our understanding of how programs and practices with adolescents can impede or enhance their development. In this article the authors reflect on the progress in research on youth development programs in the last two decades, since possibly the…

The acquisition of complex motor, cognitive, and social skills, like playing a musical instrument or mastering sports or a language, is generally associated with implicit skill learning (SL). Although it is a general view that SL is most effective in childhood, and such skills are best acquired if learning starts early, this idea has rarely been…

Describing how much and what type(s) of change are evident in civic engagement across adolescence is a fundamental starting point for advancing developmental theory in the civic domain. Using five annual waves of data from a large national U.S. sample spanning 8th-12th grades, our study describes civic engagement typologies and transitions in and…

Two qualitative methodologies were used to develop a life-course typology of individuals who had been exposed to sexual violence. Interview narratives of 121 adult women and men who participated in qualitative study of women's and men's responses to sexual violence provided the data. The authors combined a narrative approach (holistic-content and…

We used three identity processes (i.e., commitment, in-depth exploration, and reconsideration of commitment) from a recently developed model of identity formation to derive empirically identity statuses in a sample of 1952 early and middle adolescents. By means of cluster analysis, we identified five statuses: achievement, foreclosure, moratorium,…

Groups of adolescents were identified on the basis of developmental trajectories of their families' rules and their parents' knowledge of their activities. Characteristics of the adolescent, peer antisociality, and family context were tested as antecedents. In sum, 404 parent-adolescent dyads provided data for adolescents aged 10-16. Most…

A dual taxonomy is presented to reconcile two incongruous facts about antisocial behavior, that it shows impressive continuity over age, but its prevalence changes dramatically over age, increasing almost tenfold during adolescence. Studying delinquents earlier in life may yield more information about the causes and antecedents of antisocial…

Twelve papers on the emergence and maintenance of severe clinical depression and depressive symptoms during adolescence are presented. Topics include parental influences, epidemiological data, depressive and negative affect, hormonal effects, preadolescent symptoms, sex differences, longitudinal studies with rhesus monkeys, suicidal ideation,…

A typology of adolescent media uses is presented, discussing five uses--entertainment, identity formation, high sensation, coping, and youth culture identification--in relation to adolescent socialization. Media differ from other socializing agents in that adolescents have greater control over their media choices, resulting in substantial…

The effective practice of school psychology requires a strong research and theoretical base, a framework that encompasses developmental processes and outcomes, both adaptive and maladaptive, which facilitates assessment and intervention and offers insight into classroom and family dynamics. Attachment theory provides the school psychologist with…