Statistical modelling of vignette data in psychology

Baguley, T. ORCID: 0000-0002-0477-2492, Dunham, G. and Steer, O. ORCID: 0000-0002-0922-5498, 2022. Statistical modelling of vignette data in psychology. British Journal of Psychology, 113 (4), pp. 1143-1163. ISSN 0007-1269

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Vignette methods are widely used in psychology and the social sciences to obtain responses to multi-dimensional scenarios or situations. Where quantitative data are collected this presents challenges to the selection of an appropriate statistical model. This depends on subtle details of the design and allocation of vignettes to participants. A key distinction is between factorial survey experiments where each participant receives a different allocation of vignettes from the full universe of possible vignettes and experimental vignette studies where this restriction is relaxed. The former leads to nested designs with a single random factor and the latter to designs with two crossed random factors. In addition, the allocation of vignettes to participants may lead to fractional or unbalanced designs and a consequent loss of efficiency or aliasing of the effects of interest. Many vignette studies (including some factorial survey experiments) include unmodeled heterogeneity between vignettes leading to potentially serious problems if traditional regression approaches are adopted. These issues are reviewed and recommendations are made for the efficient design of vignette studies including the allocation of vignettes to participants. Multilevel models are proposed as a general approach to handling nested and crossed designs including unbalanced and fractional designs. This is illustrated with a small vignette data set looking at judgements of online and offline bullying and harassment.

Item Type: Journal article
Publication Title: British Journal of Psychology
Creators: Baguley, T., Dunham, G. and Steer, O.
Publisher: Wiley
Date: November 2022
Volume: 113
Number: 4
ISSN: 0007-1269
Rights: © 2022 the authors. British Journal of Psychology published by John Wiley & Sons Ltd on behalf of the British Psychological Society. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Divisions: Schools > School of Social Sciences
Record created by: Jeremy Silvester
Date Added: 09 Sep 2022 08:17
Last Modified: 14 Oct 2022 14:31

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