Factor Structure, Measurement Invariance Across Gender Sub-Groups, and Normative Data for the Italian Translation of the UPPS-P Impulsive Behavior Scale in Italian Community-Dwelling Adults

To evaluate the factor structure and measurement invariance of the Italian translation of the UPPS-P Impulsive Behavior Scale, while providing also normative data, 797 community dwelling adults were administered the UPPS-P online. Omega coefficient values suggested adequate internal consistency reliability for all the UPPS-P scales. Weighted least square mean and variance adjusted (WLSMV) confirmatory factor analysis (CFA) showed adequate fit for the a priori five-factor model of the UPPS-P items. Measurement invariance findings supported the scalar invariance of the UPPS-P items across male and female sub-group (RMSEA =.052, CFI =.921, Δ-CFI =.002), thus allowing gender comparisons in terms of latent factor mean scores. Based on these findings, normative data and T scores for the UPPS-P scale score distribution among Italian community-dwelling adults were provided. Hopefully, our findings may help clinicians and researchers to use the UPPS-P in their routine assessment of impulsive behaviors © 2021. by the Author(s), licensee Mediterranean Journal of Clinical Psychology