Consistency tendency and the theory of planned behavior : a randomized controlled crossover trial in a physical activity context
Chan, Derwin K. C.; Stenling, Andreas; Yusainy, Cleoputri; Hikmiah, Ziadatul; Ivarsson, Andreas; Hagger, Martin S.; Rhodes, Ryan E.; Beauchamp, Mark R. (2020). Consistency tendency and the theory of planned behavior : a randomized controlled crossover trial in a physical activity context. Psychology and Health, 35 (6), 665-684. DOI: 10.1080/08870446.2019.1677904
Published inPsychology and Health
© 2019 Informa UK Limited, trading as Taylor & Francis Group
Objective: This study examined the effects of consistency tendency on the predictive power of the theory of planned behavior (TPB) in relation to physical activity behavior. Methods: In this randomized controlled cross-over trial, we recruited 770 undergraduate students from Indonesia who were randomly assigned into two groups. Participants completed physical activity versions of TPB measures at T1 (baseline) and T2 (post 1 week), and the International Physical Activity Questionnaire at T3 (post 1 month). At T1 and T2, the TPB questions were either presented in ensemble-order (i.e., consistency tendency supressed) or alternate-order (i.e., consistency tendency facilitated). Results: The parameter estimates of the model (CFI > .92, TLI > .90, SRMR < .08, RMSEA < .08) aligned with the tenets of TPB. As compared to ensemble-order, a TPB measured in alternate-order yielded stronger cross-sectional relationships, but this pattern did not appear in the prospective relationships in TPB (i.e., intention/perceived behavioral control and behavior). Conclusions: Consistency tendency inflated the factor correlations of cross-sectionally measured TPB variables, but the inflation was not observed in the prospective prediction of behavior. Health psychology questionnaires with items presented in ensemble order may represent a viable means of reducing the confounding effect of consistency tendency. ...
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