In order to assess the reliability, factorial validity, and criterion validity of the Personality Inventory for DSM-5 (PID-5) among adolescents, 1,264 Italian high school students were administered the PID-5. Participants were also administered the Questionnaire on Relationships and Substance Use as a criterion measure. In the full sample, McDonald’s ω values were adequate for the PID-5 scales (median ω =.85, SD =.06), except for Suspiciousness. However, all PID-5 scales showed average inter-item correlation values in the.20-.55 range. Exploratory structural equation modeling analyses provided moderate support for the a priori model of PID-5 trait scales. Ordinal logistic regression analyses showed that selected PID-5 trait scales predicted a significant, albeit moderate (Cox & Snell R2 values ranged from.08 to.15, all ps <.001) amount of variance in Questionnaire on Relationships and Substance Use variables.
Bibliographical noteFunding Information:
From LUMSA University, Rome, Italy, and San Raffaele Hospital, Milan, Italy (A. S., A. F.); Vita-Salute San Raffaele University, Milan, Italy, and San Raffaele Hospital, Milan, Italy (S. B., C. M., L. E. G.); University of Iowa, Iowa City, Iowa (K. E. M.); and University of Minnesota, Minneapolis, Minnesota (R. F. K.). This research was partially supported by SOROPTIMIST Valsesia, Italy, and Scientific Foundation Giovanni Turcotti, Borgosesia, Italy. Address correspondence to Andrea Fossati, Clinical Psychology and Psychotherapy Unit, San Raffaele Turro Hospital, via Stamira d’Ancona 20, 20127 Milan, Italy. E-mail: email@example.com
© 2017 The Guilford Press.