Evidence of the Psychometric Integrity of the Creative Personality Scale using Item Response Theory Models

Gough's Creative Personality Scale (CPS) has been very widely used to assess creative personality characteristics, and many researchers have argued that it is associated with strong reliability and validity evidence. However, findings vary considerably across the samples used in each study, suggesting that an analysis using the item response theory framework would provide more useful evidence of the instrument's psychometric integrity. Results suggest that the CPS is multidimensional, and some items have low discrimination indices. Additionally, significant correlations between participants' trait estimates (i.e., estimated creative personality) and their engagement in a range of creative activities indicate that the CPS is associated with convincing evidence of criterion-related validity.