Introduction: The present study was aimed to predict social intimacy by early maladaptive schemas and attachment styles. Method: This descriptive study was conducted on high school students. In the study, about 400 subjects were selected as the sample through multistage cluster random sampling technique. Data collection was done by using Young's Early Maladaptive Schema Questionnaire, Hazan & Shaver Attachment Style Questionnaire, and the Miller Social Intimacy Scale. The data were analyzed by Descriptive statistics, Pearson correlation and enter regression analysis. Results: The results showed that early maladaptive schemas and insecure attachment styles are not able to predict social intimacy. This is while, secure attachment styles have the ability to predict social intimacy and that; social intimacy has a significant negative relation to insecure attachment styles and early maladaptive schemas. Conclusion: According to the research findings, secure attachment style is a good predictor of social intimacy. It seems necessary to pay attention to secure attachment style in order to increase social intimacy.
