When No One Is Watching: No Effects of Brief Social Media Model Exposure on Young Women’s Appearance-Enhancing Behaviors

The adverse effects of social media have been widely studied, but most research has focused on internalization of beauty standards, body attitudes, and self-enhancement intentions rather than observable behavioral responses. In this pre-registered experiment, female participants ( n = 164) were fitted with a head-mounted device, described as a head tracker, but actually a device designed to tousle their hair. Participants viewed either idealized social media models or neutral abstract paintings. After the device was removed, participants were left alone in a laboratory room for 2 min, while their natural behaviors were recorded. Recordings were then analyzed using BORIS software to assess mirror self-gazing, mirror self-fixation, and self-modification. Contrary to predictions, no significant behavioral differences emerged between conditions and observed effect sizes were substantially smaller than anticipated. These null findings suggest several possibilities: brief exposure to idealized models is insufficient to elicit immediate appearance-related behaviors; long-term exposure to social media has already been internalized, so additional short exposures produce a change smaller than expected; and/or our behavioral indices lacked sensitivity to detect small effects. We conclude that future studies should assess cumulative exposure, employ more sensitive measures, and sample populations with lower prior social-media experience.