Sammendrag
The present study examined whether the theory of planned behaviour (TPB) could predict parents’ intentions not to smoke indoors in the presence of their children. Moral norms, smoker identity, parent identity, and positive and negative anticipated affect were included as additional predictors. A questionnaire was sent to a representative sample of 1000 households in Norway with children born in 1998, and was completed by 612 respondents. The TPB variables and the extension variables were measured among the smokers in the sample (101 women and 61 men). Intentions were predicted by subjective norms and perceived behavioural control. The data were supportive of the inclusion of smoker identity and moral norms in the TPB. We also found a significant interaction effect between parent identity and smoker identity, and between negative anticipated affect and moral norms. Furthermore, we identified significant interactions between gender and three of the predictors of behavioural intentions. The TPB components explained 56% of the variance in intentions, while the additional variables explained a further 19%.
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