LAUSR

The prevalence of social appearance anxiety among adolescents has increased in recent years. It can be said that one of the reasons for this situation is appearance-oriented social media applications. Attachment styles in adolescents may play a role in social appearance anxiety, as in many types of anxiety. However, adolescents' positive youth development levels may have a protective role against social appearance anxiety. Therefore, this study investigated the serial mediator roles of Instagram addiction and positive youth development in the relationship between anxious-avoidant attachment style and social appearance anxiety in adolescents. The research was carried out with 508 high school students. As a result of the research, it was determined that anxious-avoidant attachment and Instagram addiction predicted social appearance anxiety positively. It was determined that positive youth development predicted social appearance anxiety negatively. In addition, mediating roles in the relationship between positive youth development and Instagram addiction, anxious-avoidant attachment and social appearance anxiety were found significant in the study.