“…In previous studies, those who reported smoking cigarettes in the past week were defined as regular users (Brook, Morojele, Brook, Zhang, & Whiteman, 2006;Flay, Hu, & Richardson, 1998;Sanderson Cox, Feng, Canar, McGlinchey Ford, & Tercyak, 2005). At this stage, adolescents have progressed beyond experimental (30-day) smoking to smoking on at least a fairly regular basis, but this falls well short of addictive smoking as indicated by multiple cigarettes smoked frequently at regular intervals throughout the day, beginning generally within 30 minutes after awakening in the morning (Fagerström & Schneider, 1989;Flay et al, 1998;Heatherton, Kozlowski, Frecker, & Fagerström, 1991).…”