Abstract

This study aimed to adapt the Presentation of Online Self Scale in Adult (POSSA) into Korean and establish its validity among Korean adults. In Study 1, a preliminary Korean version of the scale was administered to 200 adults aged 19-39 (Sample 1) for item analysis and exploratory factor analysis(EFA). Three items with low item loadings and factor loadings were deleted. The results revealed a three-factor structure, identical to the original scale, resulting in a final scale consisting of 14 items. In Study 2, the scale was administered to 120 adults aged 19-39 (Sample 2) for confirmatory factor analysis(CFA). The results supported the three-factor model of the Korean version of the POSSA. Convergent validity was established by examining factor loadings, average variance extracted (AVE), and composite reliability (CR). Concurrent validity was supported by correlations with the NEO Five-Factor Inventory, which showed results consistent with previous studies for neuroticism and openness. Predictive validity was supported by multiple regression analyses, with all subfactors significantly predicting identity and intimacy. Additionally, two subfactors significantly predicted self-directedness and empathy. Based on these research findings, the significance, limitations, and implications were discussed, and suggestions for future research were provided.