Abstract

In this article, we aimed to determine the effect size of social exclusion by sampling 32 experimental studies conducted in Korea until July 2020. The effect size was analyzed on dependent variables categorized with affect (positive and negative affect), fundamental needs (relational and efficient needs), and social behavior (prosocial and antisocial behavior). The moderating effect was evaluated with moderators including the type of social exclusion (rejection and ignorance/ostracism) and paradigm of social exclusion (real experience, cyberball, and remembering the past and anticipating the future). As a result, social exclusion moderately diminished the positive affect (d=.488) and increased the negative affect (d=.488). Both relational (d=–.897) and efficient (d=–1.887) needs were highly intimidated by social exclusion, which raised the antisocial behavior (d=.876), but the effect of social exclusion on prosocial behavior was not significant. The type and paradigm of social exclusion significantly moderated the effect of social exclusion on affect and fundamental needs. The implications of these results and future directions for research were discussed.