In early childhood, young children frequently engage in object-oriented play. According to cultural-historical activity theory, object-oriented play provides children with opportunities to learn about the characteristics and cultural applications of objects and materials. These characteristics are referred to as rules or affordances of objects and…

This study examined to what extent motives for behavior differentiated between popular, accepted, and rejected adolescents. Based on goal-framing theory, three types of motives were distinguished: hedonic (aimed at short-term gratification), instrumental (aimed at improvement of one's situation), and normative (aimed at acting in accordance with…

Studied whether substance use, transgressive behavior, and delinquency were related to the quality of peer relations for 508 12- to 18-year-olds. Findings show that substance use and transgressive behavior are positively related to the quantity and quality of peer relations. (SLD)