A RELIABILITY GENERALIZATION STUDY OF THE FROST MULTIDIMENSIONAL PERFECTIONISM SCALE (F-MPS)

Abstract

Perfectionism has been identified as a common concern among clients who seek counseling services. For more than 20 years, the Frost Multidimensional Perfectionism Scale (F MPS) has been used extensively to measure the construct of individuals' perfectionism. The current study used reliability generalization to identify the average score reliability as well as variables explaining the variability of score reliability. Typical reliability across subscale scores ranged from .71 to .86 with the Doubt about Action subscale showing the least variability and the Organization subscale showing the most. In addition, sex, language, and standard deviation of the scale had statistically significant relations to reliability estimates.