“…It is dif cult, however, to synthesize and compare the results of the many studies because they differ considerably in terms of the age, ethnicity, and socioeconomic status of the participants as well as location, culture, setting, and measurement. Nonetheless, common in uences on and reasons for smoking initiation and maintenance have been identi ed, including parental (Flay et al, 1994;Grif n, Botvin, Doyle, Diaz, & Epstein, 1999;Stanton & Silva, 1991), peer (AloiseYoung, Graham, & Hansen, 1994;Flay et al, 1994;Skinner & Krohn, 1992;Sussman, Dent, Flay, Hansen, & Johnson, 1987;Urberg, 1992) and sibling smoking (Murray, Kiryluk, & Swan, 1985;Stanton & Silva, 1991), access to and availability of cigarettes (Altman et al, 1992;Jason, Ji, Anes, & Birkhead, 1991), socioeconomic status (Blane, Hart, Davey-Smith, Gillis, Hole, & Hawthorne, 1996;Graham & Der, 1999), personal characteristics such as rebelliousness (Best, Brown, Cameron, Manske, & Santi, 1995;Santi, Cargo, Brown, Best, & Cameron, 1996), low expectations for academic success (Chassin, Presson, Sherman, Corty, & Olshavsky, 1984), social bonding and relief from social anxiety (Crisp, Sedgwick, Halek, Joughlin, & Humphrey, 1999), weight management (Crisp et al, 1998) and socioeconomic factors (Amos, 1996;Graham & Der, 1999).…”