LAUSR

Abstract: Perfectionism is defined as the desire to achieve the highest standards of performance, in combination with unduly critical evaluations of one´s performance (Frost, Marten, Lahart, & Rosenblate, 1990). This study was designed to analyse the psychometric proprieties of the Portuguese version of the Frost Multidimensional Perfectionism Scale (MPS-F) using confirmatory factor analysis. A total of 556 Portuguese athletes completed the MPS-F. Confirmatory factor analysis was employed to test whether the proposed multi-factorial structure of MPS-F fits the Portuguese data well. The psychometric properties of the new model indicated that all constructs had good internal consistency, convergent validity, and discriminant validity. A multi-group analysis showed the cross validity of the model. The correlations between perfectionism, fear of failure and sport anxiety measures revealed evidence of its concurrent validity, providing evidence for the proposed model as a valid tool for assessing perfectionism in Portuguese sport contexts.