Personality‐obesity associations are driven by narrow traits: A meta‐analysis

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  • Uku Vainik
    Montreal Neurological Institute McGill University Montreal Canada
  • Alain Dagher
    Montreal Neurological Institute McGill University Montreal Canada
  • Anu Realo
    Institute of Psychology University of Tartu Tartu Estonia
  • Lucía Colodro‐Conde
    QIMR Berghofer Medical Research Institute Brisbane Australia
  • Erik Lykke Mortensen
    Department of Public Health University of Copenhagen Copenhagen Denmark
  • Kerry Jang
    Division of Behavioural Sciences, Department of Psychiatry The University of British Columbia Vancouver Canada
  • Ando Juko
    Faculty of Letters Keio University Tokyo Japan
  • Christian Kandler
    Department of Psychology University of Bremen Bremen Germany
  • Thorkild I.A. Sørensen
    Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, and Department of Public Health, Section of Epidemiology, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
  • René Mõttus
    Institute of Psychology University of Tartu Tartu Estonia

Description

<jats:title>Summary</jats:title><jats:p>Obesity has inconsistent associations with broad personality domains, possibly because the links pertain to only some facets of these domains. Collating published and unpublished studies (N = 14 848), we meta‐analysed the associations between body mass index (BMI) and Five‐Factor Model personality domains as well as 30 Five‐Factor Model personality facets. At the domain level, BMI had a positive association with Neuroticism and a negative association with Conscientiousness domains. At the facet level, we found associations between BMI and 15 facets from all five personality domains, with only some Neuroticism and Conscientiousness facets among them. Certain personality‐BMI associations were moderated by sample properties, such as proportions of women or participants with obesity; these moderation effects were replicated in the individual‐level analysis. Finally, facet‐based personality “risk” scores accounted for 2.3% of variance in BMI in a separate sample of individuals (N = 3569), 409% more than domain‐based scores. Taken together, personality‐BMI associations are facet specific, and delineating them may help to explain obesity‐related behaviours and inform intervention designs. Preprint and data are available at<jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://psyarxiv.com/z35vn/">https://psyarxiv.com/z35vn/</jats:ext-link>.</jats:p>

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