Abstract Current researches focus on the relationship between psychological ownership and organizational citizenship behavior, but seldom discuss the mediators between them. This paper investigated the relationship between psychological ownership and organizational citizenship behavior, and particularly compared the effect of organizational commitment with that of organizational identification. Adopting a sample of 544, we testified that psychological ownership, organizational commitment and organizational identification are different psychological constructions. We found that psychological ownership has a significant impact on organizational citizenship behavior. Organizational identification fully mediates the relationship between psychological ownership and organizational citizenship behavior, and organizational commitment
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