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Viewing psychological ownership as a positive resource for impacting human performance in organizations, the present study investigated the components of an expanded view of psychological ownership. Confirmatory factor analyses on a proposed measure of psychological ownership provided support for a positively-oriented, ‘‘promotion-focused’’ aspect of psychological ownership comprised of four dimensions: self-efficacy, accountability, sense of belongingness, and self-identity. In addition, territoriality was examined as a unique and more ‘‘prevention-focused’’ form of ownership. Practical implications and suggestions for future research on psychological ownership and positive organizational behavior conclude the article.