title: Should the stage of change model be challenged?
authors.affiliation: Department of Psychology, University of Pittsburgh, PA 15260, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Pierce
authors.forename: A
authors.initials: A
authors.lastname: Farkas
authors.forename: S H
authors.initials: SH
authors.lastname: Zhu
authors.forename: C
authors.initials: C
authors.lastname: Berry
authors.forename: R M
authors.initials: RM
authors.lastname: Kaplan
mesh_terms: D002140:California / Q000453:epidemiology; D005500:Follow-Up Studies; D006801:Humans; D015233:Models, Statistical; D009042:Motivation; D012907:Smoking / Q000453:epidemiology / Q000523:psychology*; D016540:Smoking Cessation / Q000523:psychology*; D000074606:Smoking Prevention; D016896:Treatment Outcome