Testing the effects of explicit and implicit bidimensional attitudes on objectively measured speeding behaviour

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McCartan, Rebecca and Elliott, Mark A. and Pagani, Stefania and Finnegan, Eimear and Kelly, Steve W. (2018) Testing the effects of explicit and implicit bidimensional attitudes on objectively measured speeding behaviour. British Journal of Social Psychology. ISSN 0144-6665 (https://doi.org/10.1111/bjso.12255)

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Abstract

Bi-dimensional attitudes have been shown to independently predict behaviour, with the positive dimension of attitude being a stronger predictor of behaviour than the negative dimension (e.g., Elliott, Brewster, Thomson, Malcolm & Rasmussen, 2015). However, this positivity bias has been demonstrated with explicit attitude measures only and explicit attitude measures tap deliberative processes rather than automatic processes, which are known to be important in the execution of many behaviours. The aim of this study was to test whether implicit bi-dimensional attitudes can account for variance in speeding behaviour over and above explicit bi-dimensional attitudes and whether the positivity bias that is typically found with explicit attitudes generalises to implicit attitudes. 131 drivers completed a questionnaire measuring their explicit bi-dimensional attitudes towards speeding. They also completed Implicit Association Tests measuring their implicit bi-dimensional attitudes. Two weeks later, speeding behaviour was measured using a driving simulator. Explicit attitudes accounted for a significant proportion of the variance in subsequent speeding behaviour. Implicit attitudes accounted for a statistically significant increment to explained variance. The positive dimension of both explicit and implicit attitudes predicted speeding behaviour but the negative dimensions did not. Theoretical implications for understanding the potential attitudinal causes of behaviour and practical implications for behaviour-change interventions are discussed.

ORCID iDs

McCartan, Rebecca, Elliott, Mark A. ORCID logoORCID: https://orcid.org/0000-0002-3539-6426, Pagani, Stefania, Finnegan, Eimear ORCID logoORCID: https://orcid.org/0000-0002-4587-8074 and Kelly, Steve W. ORCID logoORCID: https://orcid.org/0000-0001-7539-2641;
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