Predicting the intention to quit smoking and quitting behaviour: Extending the theory of planned behaviour
- 1 May 2008
- journal article
- research article
- Published by Wiley in British Journal of Health Psychology
- Vol. 13 (2), 291-310
- https://doi.org/10.1348/135910707x187245
Abstract
Objectives. The present study examined the ability of the TPB to predict the intention to quit smoking and quitting behaviour. In addition, the predictive power of future orientation, number of cigarettes smoked, planning, past behaviour and the interactions between intention and other predictors was examined. Material and methods. The data were derived from a longitudinal survey among 103 daily smoking students at the University of Oslo (mean age 24.6 years, mean number of years of smoking = 8 years). These data were collected by means of self-administered questionnaires at T1 (October 2003) and at T2 (February 2004) in terms of recording actual quitting. Results. The TPB components accounted for 30% of the variance in quitting intentions, and affective attitude and descriptive norm emerged as the strongest predictors of quitting intention. Ordinal regression analysis showed that intention was a borderline significant predictor of subsequent quitting behaviour, while the impact of PBC was non-significant (model 1). The inclusion of the additional variables improved the fit of the model, with number of cigarettes and planning appearing as significant predictors of behaviour (model 2). As predicted, there was a significant interaction between perceived control and intentions on quitting (model 3). Nagelkerke R2 increased from .07 in model 1 to .54 in model 2, and finally to .58 in model 3. Conclusions. The results indicate that affective attitude and descriptive norm play a more crucial role than the other TPB predictors in motivating smokers to quit. The results also indicate that self-regulatory strategies are important in relation to addictive behaviours.Keywords
This publication has 68 references indexed in Scilit:
- Action plans and coping plans for physical exercise: A longitudinal intervention study in cardiac rehabilitationBritish Journal of Health Psychology, 2006
- Role of anticipated regret, intentions and intention stability in adolescent smoking initiationBritish Journal of Health Psychology, 2006
- Theory-based Behavior Change Interventions: Comments on Hobbis and SuttonJournal of Health Psychology, 2005
- Modelling the theory of planned behaviour and past behaviourPsychology, Health & Medicine, 2003
- Efficacy of the Theory of Planned Behaviour: A meta‐analytic reviewBritish Journal of Social Psychology, 2001
- Who's Smoking, Drinking, and Using Drugs? Time Perspective as a Predictor of Substance UseBasic and Applied Social Psychology, 1999
- From health beliefs to self-regulation: Theoretical advances in the psychology of action controlPsychology & Health, 1998
- The Theory of Planned Behavior: A Review of its Applications to Health-Related BehaviorsAmerican Journal of Health Promotion, 1996
- A Comparison of the Theory of Planned Behavior and the Theory of Reasoned ActionPersonality and Social Psychology Bulletin, 1992
- The theory of planned behaviorOrganizational Behavior and Human Decision Processes, 1991