We conducted three studies to evaluate further the reliability and construct validity of a new self-report instrument, the Pain Distress Inventory (PDI; Osman et al., 2003, The Pain Distress Inventory: Development and initial psychometric properties, J. Clin. Psychol. 59: 767-785). In Study I, exploratory and confirmatory factor analytic results confirmed the replicability of the four-factor oblique solution of the PDI in a mixed sample of students and nonstudents. We also found strong evidence for criterion-related validity of scores on this instrument. In Study II, multisample analyses results found further evidence for equivalence of structure of the PDI across African American and Caucasian young adults. Ethnic and gender group differences were obtained on two of the PDI scale scores. Internal consistency reliability estimates on the PDI total and scale scores were good in both Studies I and II. In Study III, additional analyses of internal consistency and known-groups validity established strong support for construct validity of the PDI.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.