Yıldız, Banu2026-01-242026-01-2420251302-12652149-4894https://search.trdizin.gov.tr/tr/yayin/detay/1318475https://doi.org/10.32709/akusosbil.1291917https://hdl.handle.net/20.500.12868/3809Peter Pan syndrome is a critical problem that negatively affects the mental health and relationships of men, especially in emerging adulthood. Therefore, it is important to examine the relationship between the trigger and alleviating variables of this syndrome, which may have negative consequences in the field of mental health. Considering that although it is a serious mental health problem, there is not enough research on this subject in Türkiye, it is clear that it is important to fill an important gap in the literature and draw attention to this issue. Therefore, in a non-clinical sample, this study aims to examine the mediating role of interpersonal competence in the association between differentiation of self and Peter Pan syndrome. It is assumed that individuals with self-differentiation have higher interpersonal competence, as a result, a lower risk of developing Peter Pan syndrome. All of the participants are male. A total of 425 individuals between the ages of 18-30, who were romantically involved or married, participated in the study. The study's result showed that interpersonal competence and differentiation of self are positively correlated with each other, and that Peter Pan syndrome is negatively correlated with both of them. As a result of the mediation analysis, the mediating role of interpersonal competence in the relationship between self-differentiation and Peter Pan syndrome was found to be statistically significant. Researchers and experts in the field of mental health are anticipated to use the study's findings as a guide.eninfo:eu-repo/semantics/openAccessDifferentiation of selfInterpersonal competencePeter Pan syndromeArticle10.32709/akusosbil.12919172727017121318475