Forster, Andrew John (2012) An Exploratory Model to Predict Intention to Quit Smoking. Honours thesis, University of Southern Queensland. (Unpublished)
Abstract
Past research suggests greater intention to quit smoking increases the probability of success. The present study developed and tested an exploratory model to predict higher intention to quit smoking. The exploratory model modified the theory of planned behaviour (TPB; Ajzen, 1991; attitude, subjective norm, perceived behavioural control substituted with physiological nicotine dependence, intention) and augmented it with variables found significantly related to higher quitting intention or success in prior research (quitting identity, prototypical similarity, and habit). A correlational survey research design was utilised. Participants were recruited through a sample of convenience (N = 103). The final exploratory model was significant; F(4, 98) = 19.14, p < .001. Greater quitting identity was the most important predictor of intention to quit smoking (β = .37; p < .001; sr² = .11), followed by a more positive attitude (β = −.35; p < .001; sr² = .10), and two variables derived from a principal component analysis (PCA) of the subjective norm questionnaire—greater Friends’ Negative Injunction (β = .28; p = .001; sr² = .07) and greater Family Injunction (β = .25; p = .006; sr² = .05). Interpretation suggested: (a) attitude and quitting identity measure the same construct; (b) subjective norm should be conceptualised and operationalised as separate injunctive norms; (c) the conceptualisation and operationalisation of prototypical similarity is flawed; (d) nicotine dependence is not a substitute for perceived behavioural control (PBC); and (e) habit has no relationship with intention to quit smoking. The findings cannot be generalised beyond the present sample.
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| Item Type: | Thesis (Non-Research) (Honours) |
|---|---|
| Item Status: | Live Archive |
| Additional Information: | Current UniSQ staff and students can request access to this thesis. Please email research.repository@unisq.edu.au with a subject line of SEAR thesis request and provide: Name of the thesis requested and Your name and UniSQ email address |
| Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Psychology (Up to 30 Jun 2013) |
| Supervisors: | Des Coates |
| Qualification: | Bachelor of Science (Honours) |
| Date Deposited: | 30 Sep 2025 01:21 |
| Last Modified: | 30 Sep 2025 01:21 |
| Uncontrolled Keywords: | smoking ; tobacco ; addiction ; theory of planned behaviour ; intention to quit smoking ; attitude ; subjective norm ; perceived behavioural control, nicotine dependence, prototypical similarity ; quitting identity ; habit ; SRHI ; FTND |
| Fields of Research (2008): | 17 Psychology and Cognitive Sciences > 1799 Other Psychology and Cognitive Sciences > 179999 Psychology and Cognitive Sciences not elsewhere classified |
| Fields of Research (2020): | 52 PSYCHOLOGY > 5299 Other psychology > 529999 Other psychology not elsewhere classified |
| URI: | https://sear.unisq.edu.au/id/eprint/52327 |
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