Nearly all first use of tobacco occurs before high school graduation, and because nicotine is addictive, adolescents who smoke regularly are likely to become adult smokers (U.S. Department of Health and Human Services [USDHHS] 1994). Research on smoking initiation has, therefore, focused on adolescents and has been informed by a wealth of behavioral studies. Predictors of use of tobacco and other substances (Conrad et al. 1992; Hawkins et al. 1992; USDHHS 1994) and theories of adolescents' use of such substances (Petraitis et al. 1995) point to a complex set of interrelated factors.