1. Engagement Within and Across Leisure Activities in Adolescence: Implications for Substance Use and Sexual Activity Open Access Author: Tibbits, Melissa Kaye Title: Engagement Within and Across Leisure Activities in Adolescence: Implications for Substance Use and Sexual Activity Graduate Program: Human Development and Family Studies Keywords: AdolescenceLeisure ActivitiesSouth AfricaSubstance Use File: Download Tibbits_Dissertation_Final_6-24-09.pdf Committee Members: Edward A Smith, Dissertation Advisor/Co-AdvisorEdward A Smith, Committee Chair/Co-ChairLinda L Caldwell, Committee Chair/Co-ChairMark T Greenberg, Committee MemberStephanie Trea Lanza, Committee MemberJohn Walter Graham, Committee Member
