The Role of Socialization, Effortful Control, and Ego Resiliency in French Adolescents'' Social Functioning Claire Hofer, Nancy Eisenberg, Mark Reiser 555-582 Addressing Three Common Issues in Research on Youth Activities: An Integrative Approach for Operationalizing and Analyzing Involvement Michael A. Busseri, Linda Rose-Krasnor 583-615 Adolescents and Music Media: Toward and Involvement-Mediational Model of Consumption and Self-Concept Michelle Kistler, Kathleen Boyce Rodgers, Thomas Power, Erica Weintraub Austin, Laura Griner Hill 616-630 In-School Versus Out-of-School Friendships and Academic Achievement Among an Ethnically Diverse Sample of Adolescents Melissa R. Witkow, Andrew J. Fuligni 631-650 Developmental Precursors of Number of Sexual Partners From Ages 16 to 22 Jennifer E. Lansford etc 651-677 