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Sensitivity to Weight Changes of Others Depends on Personal Body Size

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/persons/resource/persons214501

Thaler,  A
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Geuss,  MN
Max Planck Institute for Biological Cybernetics, Max Planck Society;
Research Group Space and Body Perception, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons214504

Mölbert,  SC
Max Planck Institute for Biological Cybernetics, Max Planck Society;
Research Group Space and Body Perception, Max Planck Institute for Biological Cybernetics, Max Planck Society;

/persons/resource/persons84240

Streuber,  S
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Black,  MJ
Max Planck Institute for Intelligent Systems, Max Planck Society;

/persons/resource/persons84088

Mohler,  BJ
Max Planck Institute for Biological Cybernetics, Max Planck Society;
Research Group Space and Body Perception, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Thaler, A., Geuss, M., Mölbert, S., Streuber, S., Giel, K., Black, M., et al. (2016). Sensitivity to Weight Changes of Others Depends on Personal Body Size. Poster presented at 39th European Conference on Visual Perception (ECVP 2016), Barcelona, Spain.


Cite as: https://hdl.handle.net/21.11116/0000-0000-7B3C-4
Abstract
Previous research has suggested that own body size estimates are biased towards an average reference body (Cornelissen, Bester, Cairns, Tove´e Cornelissen, 2015). The role of personal body size in body size perception of others is still unclear. In this study, we tested healthy females varying in body mass index (BMI) to investigate whether personal body size influenced accuracy of body size estimation and sensitivity to weight changes of others. We generated four biometric female avatars with BMIs of 15, 25, 35, and 45 and altered the weight of the avatars (5, 10,
15, and 20 BMI change) based on a statistical body model. In several psychophysical experiments, we presented the stimuli on a stereoscopic, large-screen immersive display. For each avatar series, participants memorized what the original body looked like and then responded for each of the presented bodies whether it was the same as the one memorized.
Our results show that there was no influence of personal BMI on the accuracy of body size
estimation of the avatars. Interestingly however, participants were more sensitive to weight
changes of an avatar close in BMI to their own, suggesting that own body size influences
perception of others’ weight.