Abstract: The self-complexity model proposed that a highly differentiated self-concept protected against the depressogenic impact of negative life events. Linville’s influential prospective study appeared to support this proposition. Subsequent reports have raised questions about the construct validity of Linville’s operationalization of self-complexity (defined by the degree to which self-reported personality descriptors are dispersed across self-aspects), as well as the robustness of a buffering effect of self-complexity. Despite some efforts to modify the model, there’s no significant progress because of the inconsistent definition of self-complexity, lack of effective research method and representative samples. Future work should engage in improving all of these aspects accordingly. Implications of the findings for the study of self-knowledge structure and its relation to psychological well-being were discussed

Key words: self-complexity, stress, differentiation, integration, fragmentation