Exploring the Interplay Between Message Format, Need for Cognition and Personal Relevance on Processing Messages About Physical Activity: a Two-Arm Randomized Experimental Trial

Camille E. Short · Rik Crutzen · Emma E.M. Stewart · Jessica L. O’Rielly · Mathew Dry · Andrew Skuse +5 more

6 citations0/0 files storedInternational Journal of Behavioral Medicine

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Behavioral Health and Interventions Physical Activity and Health Media Influence and Health

Abstract

BACKGROUND: According to the Elaboration Likelihood Model, persuasion can occur via two different routes (the central route and peripheral route), with the route utilized dependent on factors associated with motivation and ability. This study aimed to explore the moderating role of need for cognition (NFC) and perceived relevance on the processing of physical activity messages designed to persuade via either the central route or the peripheral route. METHOD: Participants (N = 50) were randomized to receive messages optimized for central route processing or messages optimized for peripheral route processing. Eye-tracking devices were used to assess attention, which was the primary outcome. Message perceptions and the extent of persuasion (changes in physical activity determinants) were also assessed via self-report as secondary outcomes. Moderator effects were examined using interaction terms within mixed effects models and linear regression models. RESULTS: There were no detected interactions between condition and NFC for any of the study outcomes (all ps > .05). Main effects of personal relevance were observed for some self-report outcomes, with increased relevance associated with better processing outcomes. An interaction between need for cognition and personal relevance was observed for perceived behavioral control (p = 0.002); greater relevance was associated with greater perceived behavioral control for those with a higher need for cognition. CONCLUSION: Matching physical activity messages based on NFC may not increase intervention efficacy. Relevance of materials is associated with greater change in physical activity determinants and may be more so among those with a higher NFC.

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References

1991The theory of planned behavior 2010CONSORT 2010 Explanation and Elaboration: updated guidelines for reporting parallel group randomised trials 1998Eye movements in reading and information processing: 20 years of research.2004Health Promotion by Social Cognitive Means 1982The need for cognition.1984The Efficient Assessment of Need for Cognition 1996Dispositional differences in cognitive motivation: The life and times of individuals varying in need for cognition.2010Using the Internet to Promote Health Behavior Change: A Systematic Review and Meta-analysis of the Impact of Theoretical Basis, Use of Behavior Change Techniques, and Mode of Delivery on Efficacy

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