Confirmatory factor analysis of the revised Personal Style Inventory (PSI)

The revised Personal Style Inventory (PSI) was developed to measure the sociotropy and autonomy personality dimensions; both of these dimensions are thought to confer specific vulnerabilities to the onset, maintenance, and reoccurrence of depression. Confirmatory factor analysis was used to test the theoretical structure that informed the construction of the PSI. Using a large sample of nonclinical participants (n = 869) and a sample of outpatients with major depression (n = 101), both the items and the subscales of the PSI decomposed into factor structures that were, overall, fair to good representations of the theoretical model. Modifications were needed at the subscale level to achieve an adequate fit for the nonclinical and clinical samples, which provide implications for both the measurement and theory of the PSI and the sociotropy and autonomy domains.