Testing a self-determination theory intervention for motivating tobacco cessation: Supporting autonomy and competence in a clinical trial

Geoffrey C. Williams, Holly A. McGregor, Daryl Sharp, Chantal Levesque, Ruth W. Kouides, Richard M. Ryan, Edward L. Deci

Research output: Contribution to journalArticlepeer-review

349 Scopus citations

Abstract

A longitudinal randomized trial tested the self-determination theory (SDT) intervention and process model of health behavior change for tobacco cessation (N = 1006). Adult smokers were recruited for a study of smokers' health and were assigned to intensive treatment or community care. Participants were relatively poor and undereducated. Intervention patients perceived greater autonomy support and reported greater autonomous and competence motivations than did control patients. They also reported greater medication use and significantly greater abstinence. Structural equation modeling analyses confirmed the SDT process model in which perceived autonomy support led to increases in autonomous and competence motivations, which in turn led to greater cessation. The causal role of autonomy support in the internalization of autonomous motivation, perceived competence, and smoking cessation was supported.

Original languageEnglish
Pages (from-to)91-101
Number of pages11
JournalHealth Psychology
Volume25
Issue number1
DOIs
StatePublished - Jan 2006

Keywords

  • Adherence
  • Autonomous motivation
  • Perceived competence
  • Self-determination theory
  • Tobacco dependence treatment

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