Interaction effects in the theory of planned behavior: the interplay of self-identity and past behavior

Smith, Joanne R., Terry, Deborah J., Manstead, Antony Stephen Reid ORCID: https://orcid.org/0000-0001-7540-2096, Louis, Winnifred R., Kotterman, Diana and Wolfs, Jacqueline 2007. Interaction effects in the theory of planned behavior: the interplay of self-identity and past behavior. Journal of Applied Social Psychology 37 (11) , pp. 2726-2750. 10.1111/j.1559-1816.2007.00278.x

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Abstract

This research used a revised theory of planned behavior (TPB) model, which incorporated self-identity and past behavior—and the interaction between these constructs—in order to improve the model's predictive power in relation to consumer behavior (purchasing one's preferred beer). At Time 1, respondents (N = 108) completed measures of attitudes, perceived behavioral control, subjective norm, self-identity, past behavior, and intentions. Behavior was assessed 1 week later. All predictors were positively related to intentions. Self-identity and past behavior interacted to influence intentions: Self-identity had a stronger influence on intentions at low, rather than high, levels of past behavior. Intentions and past behavior were predictive of Time 2 behavior. These findings emphasize the need to consider identity issues in the TPB.

Item Type:	Article
Status:	Published
Schools:	Psychology
ISSN:	0021-9029
Last Modified:	20 Oct 2022 09:41
URI:	https://orca.cardiff.ac.uk/id/eprint/32792

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