The present study examined prolonged exposure effects of thin-ideal media messages. College-aged females participated in seven online sessions over 10 days including a baseline measures session, five daily measures, and a posttest. Two experimental groups viewed magazine pages with thin-ideal imagery. One of those groups was induced to engage in social comparisons with the thin-ideal models. The control group viewed messages with body-neutral images of women. Prolonged exposure to thin-ideal messages led to greater body satisfaction. This finding was attributed to the fact that the experimental groups reported more dieting behaviors. A mediation analysis showed that the impact of thin-ideal message exposure on body satisfaction was mediated by dieting.
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Knobloch‐Westerwick et al. (2011) studied this question.
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