English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The Influence of Personal Body Mass Index on Body Size Perception of Self and Other in Females

Thaler, A. (2016). The Influence of Personal Body Mass Index on Body Size Perception of Self and Other in Females. Talk presented at Virtual Environments: Current Topics in Psychological Research: VECTOR Workshop. Tübingen, Germany.

Item is

Files

show Files

Locators

show
hide
Locator:
Link (Any fulltext)
Description:
-

Creators

show
hide
 Creators:
Thaler, A1, 2, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

Content

show
hide
Free keywords: -
 Abstract: Previous research has suggested that body size estimates are biased towards an average reference body: a pattern that is predicted by a known perceptual error in psychophysical judgments, called contraction bias. Accordingly, bodies thinner than the average should be overestimated, and bodies bigger than the average should be underestimated. Previous studies have mainly focused on self-body size evaluation of patients with body image disturbances. In this study, we tested healthy females varying in body mass index (BMI) to investigate whether personal body size influences accuracy of body size estimation and sensitivity to weight changes of self and other, in a normal population. Using a 4D full-body scanning system that records participants’ body geometry and texture, we created personalized avatars varying in body weight based on a statistical body model. In several psychophysical experiments, we presented the stimuli on a stereoscopic, large-screen immersive display, and asked participants to respond to whether the body they saw was their own (Experiment 1) or was identical to a body they had memorized (Experiment 2 3). Importantly, the underlying body shape of the avatars in Experiment 2 and 3 were the same, but the texture was altered (self vs. other) to investigate the influence of identity on body size perception. Contrary to what is suggested by the contraction bias hypothesis, our results demonstrated that participants varying in BMI veridically perceived body size of an avatar with their own identity and another identity. However, we found that people with higher BMIs were more willing to accept bigger bodies than their own. Interestingly, even though the same body shapes were presented in Experiment 2 and 3, the effect of BMI on sensitivity was only apparent when participants were aware that they were viewing their own body.

Details

show
hide
Language(s):
 Dates: 2016-07-28
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: Thaler2016
 Degree: -

Event

show
hide
Title: Virtual Environments: Current Topics in Psychological Research: VECTOR Workshop
Place of Event: Tübingen, Germany
Start-/End Date: -
Invited: Yes

Legal Case

show

Project information

show

Source

show