Psychometric Properties of the Hewitt and Flett Multidimensional Perfectionism Scale in Brazilian Adults

Abstract The aim of the present study was to investigate validity evidence based on internal structure and the relationship with other variables of the Brazilian version of the Hewitt and Flett Multidimensional Perfectionism Scale (H&F-MPS). To this end, a sample comprising 368 participants with a mean age of 31.17 years (SD=11,34), 74% female, answered the H&F-MPS perfectionism scale and instruments that measure personality and psychological inflexibility. Findings indicated a factor structure of three dimensions, like the original scale, good discriminative item parameters, highly satisfactory reliability indexes, and significant correlations of the hypothesized directions with Openness to Experiences, Neuroticism, and Conscientiousness factors from the personality measure, as well as with the psychological flexibility measure.