Abstract
Clinical perfectionism is a risk and maintaining factor for anxiety disorders, depression and eating disorders. The aim was to examine the psychometric properties of the 12-item Clinical Perfectionism Questionnaire (CPQ). The research involved two samples. Study 1 comprised a nonclinical sample (n = 206) recruited via the internet. Study 2 comprised individuals in treatment for an eating disorder (n = 129) and a community sample (n = 80). Study 1 factor analysis results indicated a two-factor structure. The CPQ had strong correlations with measures of perfectionism and psychopathology, acceptable internal consistency, and discriminative and incremental validity. The results of Study 2 suggested the same two-factor structure, acceptable internal consistency, and construct validity, with the CPQ discriminating between the eating disorder and control groups. Readability was assessed as a US grade 4 reading level (student age range 9-10 years). The findings provide evidence for the reliability and validity of the CPQ in a clinical eating disorder and two separate community samples. Although further research is required the CPQ has promising evidence as a reliable and valid measure of clinical perfectionism.
Highlights
Perfectionism has predominately been viewed as multidimensional and measured with the Frost Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart and Rosenblate, 1990) and the Hewitt and Flett Multidimensional Perfectionism Scale (HMPS; Hewitt and Flett, 1991)
Participants were a part of an online experimental study investigating standard setting in clinical perfectionism; the results of the psychometric properties of the Clinical Perfectionism Questionnaire (CPQ) were not reported in this study (Egan, Dick and Allen, 2012)
The results indicated that the original 12-item CPQ had acceptable reliability in an eating disorder (α = 0.82) and two community samples (α = 0.71, α = 0.73)
Summary
Perfectionism has predominately been viewed as multidimensional and measured with the Frost Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart and Rosenblate, 1990) and the Hewitt and Flett Multidimensional Perfectionism Scale (HMPS; Hewitt and Flett, 1991). Clinical perfectionism is considered to make a unique contribution to the perfectionism construct in addition to PS and EC, and is defined as striving to meet demanding standards despite negative consequences, and basing self-esteem on achievement (Shafran, Cooper and Fairburn, 2002). It is distinct because of the emphasis of clinical perfectionism as being self-worth dependent on striving and achievement at the core. Clinical perfectionism is a maintaining factor in the transdiagnostic model of eating disorders (Fairburn, Cooper and Shafran, 2003a). Results: Study 1 factor analysis results indicated a two-factor structure
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