Studies of reward effects on behavior in adolescence typically rely on performance metrics that confound myriad cognitive and non-cognitive processes, making it challenging to determine which process is impacted by reward. The present longitudinal study applied the diffusion decision model to a reward task to isolate the influence of reward on…

Four longitudinal models are used to present a short review of research into adolescent psychosocial development. This review reveals adolescent development to proceed in a regular manner. This process of regular development suggests that it might be possible to uncover rules of intra-individual development. The aim of this paper is to propose a…

This handbook offers comprehensive coverage of the topics that are relevant to the field of adolescent and young adult development. The "APA Handbook of Adolescent and Young Adult Development" reviews the many factors that impact youth development across varying themes including biological underpinnings, cognitive and emotive processes,…

It is well established that positive youth development (PYD) programs improve adolescent psycho-social wellbeing; however, it remains unclear if PYD programs developed for able-bodied adolescents can be implemented with adolescents with disabilities in low-resource settings. We conducted a pragmatic trial of an evidence-based PYD program…

Differentiation of intelligence refers to changes in the structure of intelligence that depend on individuals' level of general cognitive ability (ability differentiation hypothesis) or age (developmental differentiation hypothesis). The present article aimed to investigate ability differentiation, developmental differentiation, and their…

An emerging area of research has focused on understanding how the group dynamics of a sport team influence positive youth development (PYD). The identities that youth form through their membership in sport teams (i.e., social identities) have been found to influence teammate behavior and team performance. Yet, minimal work exists on social…

Identity formation is a main adolescent psychosocial developmental task. The complex interconnection between different processes that are at the basis of one's identity is a research and applied intervention priority. In this context, the identity style model focuses on social-cognitive strategies (i.e., informational, normative, and…

Within contemporary developmental science, models derived from relational developmental systems (RDS) metatheory emphasize that the basic process of human development involves mutually-influential relations, termed developmental regulations, between the developing individual and his or her complex and changing physical, social, and cultural…

Though often discussed as a discrete event, puberty comprises one segment of a larger developmental continuum and is notable for rapid transformation across a multitude of domains. While an earlier timing of puberty relative to peers stands as one of the most well-replicated antecedents of adolescent difficulties for girls, findings have been less…

The following research was completed in an attempt to document the existence of any correlation between youth participation in Tae Kwon Do and various psychological and social traits evident within the participants. The data of this dissertation was gathered and recorded within the format of the qualitative case study. At the end of the case study…

This study examined the associations between sibling intimacy and conflict and youths' reports of risky behavior in a sample of adolescents ages 11-20. Participants were mothers, fathers, and sibling dyads in 393 families who were interviewed annually for 3, 4, or 5 years. Multivariate multilevel models tested longitudinal links between sibling…

The terms "play, recreation, and leisure" can evoke thoughts of frivolity, fun, sociability, competition, slothfulness, or idleness. However, there is substantial evidence that what people do in their discretionary or free time has important developmental and health implications. In this article, the authors examine how play, recreation, and…

Empowerment has become an influential concept and theoretical framework for social policy and practice. Still, relatively little is known about the roles that empowerment plays in the ecology of human development, particularly among young people. This article reports results of a study of psychological empowerment among young people, using data…

In this study, time diary data from 1977 to 1978 and 2003 to 2005 are used to investigate time use in middle adolescence with the goals of ascertaining (a) changes in time use, (b) how socioeconomic and familial factors influence adolescent time allocation, and (c) the extent to which the mix of leisure undertaken by today's adolescents reflect a…

Adolescent girls have emerged as the largest demographic of bloggers in the United States. In this study, the author interviewed 20 girls, aged 17 to 21, who had been blogging for 3 or more years. Consistent with previous studies involving youths' online activities, the girls discussed their use of blogging for self-expression and peer…