Based on a social comparison theory, this study aims to identify the gender differences in a body comparison' process, which is an important variable, developing body dissatisfaction and eating disorder. Fifty male and female university students participated in this experiment. They were asked to assess the body shape, attractiveness, superiority of overweight, muscular, and thin male bodies and overweight, normal, thin female bodies with VAS. The results showed that females estimated normal and thin female bodies as more attractive and superior than males did, while males estimated muscular male bodies as more attractive and superior than females did. Further, females reported more negative mood at post-experiment than pre-experiment compared to males, and higher body dissatisfaction in both pre- and post-experiment than males. These results suggest that females were influenced on body dissatisfaction through estimating idealized body as superior than their own body, but males were less influenced from idealized body.
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