Handedness differences in body image distortion and eating disorder symptomatology
Article first published online: 13 DEC 2006
Copyright © 2006 Wiley Periodicals, Inc.
International Journal of Eating Disorders
Volume 40, Issue 3, pages 247–256, April 2007
How to Cite
Christman, S. D., Bentle, M. and Niebauer, C. L. (2007), Handedness differences in body image distortion and eating disorder symptomatology. Int. J. Eat. Disord., 40: 247–256. doi: 10.1002/eat.20357
- Issue published online: 23 FEB 2007
- Article first published online: 13 DEC 2006
- Manuscript Accepted: 20 SEP 2006
- eating disorders;
- body size;
- body image disturbances;
- right hemisphere;
- left hemisphere;
Previous research has shown decreased access in strong right-handers to processes lateralized to the right cerebral hemisphere. The current studies tested the hypothesis that decreased access to right hemisphere processes, as indexed by increasing strength of right-hand preference, is associated with deficits in body image representation.
Experiment 1 measured individual's perceived versus actual BMI values. Experiment 2 involved the administration of the Eating Disorders Inventory-2 (EDI-2).
Experiment 1 revealed that strong right-handedness was associated with a larger discrepancy between actual and perceived BMI, relative to mixed-handedness. In Experiment 2, strong-handers scored higher on the EDI-2 than did mixed-handers.
The results indicate that strong degrees of handedness are associated with deficits in accurate representation of body image and with increased eating disorder symptomatology in a nonclinical sample. Implications for research into the neural bases of eating disorders are discussed. © 2006 by Wiley Periodicals, Inc. Int J Eat Disord 2007