Investigating the predictive validity of implicit and explicit measures of motivation on condom use, physical activity and healthy eating
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This is an Author's Accepted Manuscript of an article published in Psychology & Health (2012) (copyright Taylor & Francis) available online at: <a href="http://www.tandfonline.com/10.1080/08870446.2011.605451">http://www.tandfonline.com/10.1080/08870446.2011.605451</a>.
The literature on health-related behaviours and motivation is replete with research involving explicit processes and their relations with intentions and behaviour. Recently, interest has been focused on the impact of implicit processes and measures on health-related behaviours. Dual-systems models have been proposed to provide a framework for understanding the effects of explicit or deliberative and implicit or impulsive processes on health behaviours. Informed by a dual-systems approach and self-determination theory, the aim of this study was to test the effects of implicit and explicit motivation on three health-related behaviours in a sample of undergraduate students (N¼162). Implicit motives were hypothesised to predict behaviour independent of intentions while explicit motives would be mediated by intentions. Regression analyses indicated that implicit motivation predicted physical activity behaviour only. Across all behaviours, intention mediated the effects of explicit motivational variables from self-determination theory. This study provides limited support for dual-systems models and the role of implicit motivation in the prediction of health related behaviour. Suggestions for future research into the role of implicit processes in motivation are outlined.
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