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Understanding the Effect of Information Presentation Order and Orientation on Information Search and Treatment Evaluation

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  • Claire Louise Heard

    (Department of Psychology, King’s College London, London, UK)

  • Tim Rakow

    (Department of Psychology, King’s College London, London, UK)

  • Tom Foulsham

    (Department of Psychology, University of Essex, Colchester, UK)

Abstract

Background. Past research finds that treatment evaluations are more negative when risks are presented after benefits. This study investigates this order effect: manipulating tabular orientation and order of risk–benefit information, and examining information search order and gaze duration via eye-tracking. Design. 108 (Study 1) and 44 (Study 2) participants viewed information about treatment risks and benefits, in either a horizontal (left-right) or vertical (above-below) orientation, with the benefits or risks presented first (left side or at top). For 4 scenarios, participants answered 6 treatment evaluation questions (1–7 scales) that were combined into overall evaluation scores. In addition, Study 2 collected eye-tracking data during the benefit–risk presentation. Results. Participants tended to read one set of information (i.e., all risks or all benefits) before transitioning to the other. Analysis of order of fixations showed this tendency was stronger in the vertical (standardized mean rank difference further from 0, M  = ± .88) than horizontal orientation ( M  = ± 0.71). Approximately 50% of the time was spent reading benefits when benefits were shown first, but this was reduced to ~40% when risks were presented first (regression coefficient: B = −4.52, p

Suggested Citation

  • Claire Louise Heard & Tim Rakow & Tom Foulsham, 2018. "Understanding the Effect of Information Presentation Order and Orientation on Information Search and Treatment Evaluation," Medical Decision Making, , vol. 38(6), pages 646-657, August.
    • Handle: RePEc:sae:medema:v:38:y:2018:i:6:p:646-657
    DOI: 10.1177/0272989X18785356
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    1. repec:cup:judgdm:v:7:y:2012:i:1:p:25-47 is not listed on IDEAS
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    Cited by:

    1. Lillianna Shields & Tony Stovall & Helen Colby, 2023. "Increasing Inclusivity and Reducing Reactance During Provider-Patient Interactions," Medical Decision Making, , vol. 43(4), pages 478-486, May.

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