Personal Style Inventory Item Revision: Confirmatory Factor Analysis

This research was a team effort of Enzo Valenzi and myself. I'm deeply grateful to Enzo for his years of statistical contributions to the development of the PSI. Abstract This study was designed to revise the six scales of the Personal Style In-items for each scale were evaluated using the confirmatory factor analysis procedure of structural equation modeling as implemented in LISREL 8. Each item pool contained the original five items for each scale plus ten items constructed to supplement the original five. Using a convenience sample of 322 subjects, a revised set of five items was chosen from the 15 item pool for each scale. Several fit measures were examined to determine the adequacy of the model with the revised scales. Measurement model factor loadings were used to evaluate validity and reliability. A test-retest analysis of a 46 subject subsample, coefficient alphas, construct reliabilities, chi-square differences, model φ values, and confidence intervals were used to assess reliability, internal consistency, and discriminant validity. It was concluded that the revised scales were a significant improvement over the existing scales.