Does peer victimization predict low self-esteem, or does low self-esteem predict peer victimization? Meta-analyses on longitudinal studies

In the current study two meta-analyses are performed on longitudinal studies on peer victimization and self-esteem. The goal of these meta-analyses was to analyze whether a low self-esteem predicts future peer victimization, or whether peer victimization predicts future low self-esteem. The databases PsycINFO, MEDLINE, and ERIC were searched for relevant literature. Two authors independently went through the retrieved articles and found four doctoral dissertations and 14 peer reviewed articles eligible for inclusion in the meta-analysis. Articles were independently coded by two authors, with good interrater agreement. A total of 16,230 youth were included in the meta-analysis on peer victimization and self-esteem, and a total of 16,394 youth were included in the meta-analysis on self-esteem and peer victimization. Significant prospective pathways were found from peer victimization to self-esteem, and from self-esteem to peer victimization, which suggests that peer victimization and self-esteem are related in a transactional manner. Analyses suggested a negligible role of publication bias in the obtained results. Moderator analyses revealed that effect sizes were smaller for studies that used peer reports, and for studies that considered longer time-spans. The results of the current study suggest that peer victimization could have long lasting negative effects on self-esteem, but also point out that children may become victims because of low self-esteem.