Afsaneh Vosoughi Motlagh - Department of Clinical Psychology, Faculty of Education and Psychology, Shiraz University, Shiraz, Iran.
Sara Kamjou - Department of Educational Psychology, Faculty of Education and Psychology, Shiraz University, Shiraz, Iran.
Jalil Etemaad - Department of Educational Psychology, Faculty of Education and Psychology, Shiraz University, Shiraz, Iran.

Objective: Internet usage is widely increasing among the new generation, shaping a crucial aspect of people’s lives. Social media use can influence body image concerns, social isolation, and social mood. This study aims to assess body image concerns, social isolation, and mood based on the amount of social media use.  Methods: This study was conducted using a descriptive and correlational method. The study population included all people aged between ۲۰ and ۴۰ years in Shiraz City, Iran, among which ۳۱۱ people (۱۹۱ women and ۱۱۹ men) were selected by the convenience sampling method. The tools used in this study were the body image concerns inventory (BICI, ۲۰۰۵), the social isolation assessment standard questionnaire (SIASI, ۲۰۱۳), the positive and negative affect schedule (PANAS, ۱۹۸۸), and the social media addiction scale (SMAS_AF, ۲۰۱۷). Correlation coefficients (using the SPSS software) and structural equation modeling analysis (using AMOS statistical software) were employed to investigate the variables of the social isolation prediction model. Results: The results of the study showed that mood (β=۰.۱۵, P=۰.۰۰۷) and use of social media (β=۰.۱۹, P=۰.۰۰۰۱) can predict social isolation with the mediating role of body image concerns (β=۰.۱۸, P=۰.۰۰۱). The results showed that the mood and use of social media can predict social isolation both directly and with the mediation of body image concerns.  Conclusion: Based on the results of this study, mood, and use of social media can predict social isolation with the mediating role of body image concerns. Negative moods can make people sensitive to their body image. People have a distorted perception of their body image and this concern leads to social isolation. Coresponding author: Afsaneh Vosoughi Motlagh, E-mail: Afsanehvosoughi@gmail.com

Social isolation, Mood, Social media use, Body image concerns