Does repeatedly viewing overweight versus underweight images change perception of and satisfaction with own body size?

Helen Bould*, Katharine Noonan, Ian Penton-Voak, Andy Skinner, Marcus R. Munafò, Rebecca J. Park, Matthew R. Broome, Catherine J. Harmer

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

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Abstract

Body dissatisfaction is associated with subsequent eating disorders and weight gain. One-off exposure to bodies of different sizes changes perception of others' bodies, and perception of and satisfaction with own body size. The effect of repeated exposure to bodies of different sizes has not been assessed. We randomized women into three groups, and they spent 5 min twice a day for a week completing a one-back task using images of women modified to appear either under, over, or neither over- nor underweight. We tested the effects on their perception of their own and others' body size, and satisfaction with own size. Measures at follow-up were compared between groups, adjusted for baseline measurements. In 93 women aged 18-30 years, images of other women were perceived as larger following exposure to underweight women (and vice versa) ( p < 0.001). There was no evidence for a difference in our primary outcome measure (visual analogue scale own size) or in satisfaction with own size. Avatarconstructed ideal ( p = 0.03) and avatar-constructed perceived own body size ( p = 0.007) both decreased following exposure to underweight women, possibly due to adaptation affecting how the avatar was perceived. Repeated exposure to different sized bodies changes perception of the size of others' bodies, but we did not find evidence that it changes perceived own size.

Original languageEnglish
Article number190704
Pages (from-to)190704
JournalRoyal Society Open Science
Volume7
Issue number4
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • Adaptation
  • Body dissatisfaction
  • Body size
  • Eating disorders
  • Perception
  • Weight

ASJC Scopus subject areas

  • General

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