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In this study of the discriminant, convergent, and incremental validity of the Almost Perfect Scale-Revised (APS-R), university students completed the APS-R, additional measures of perfectionism, the NEO Five-Factor Inventory-Form S, and measures of self-esteem and depression. The results revealed expected significant, but not completely overlapping, associations between the APS-R Discrepancy subscale scores and the Five-Factor Model of Personality (FFM) dimension of Neuroticism, and between the APS-R High Standards and Order subscales and the FFM dimension of Conscientiousness. The incremental validity of APS-R scores over FFM dimensions was supported in analyses of self-esteem but not depression. The implications of these findings for further psychometric and clinical studies of perfectionism and facets of FFM dimensions are discussed.
Rice et al. (Tue,) studied this question.