The present study examined the structural validity of the 25-item Connor-Davidson Resilience Scale (CD-RISC) in a large sample of U.S. veterans with military service since 9/11/2001. Participants (n=1981) completed the 25-item CD-RISC, a structured clinical interview and a self-report questionnaire assessing psychiatric symptoms. The study sample was randomly divided into two sub-samples, an initial sample [Sample 1: n = 990] and a replication sample [Sample 2: n = 991]. Findings derived from exploratory factor analysis (EFA) did not support the five-factor analytic structure as initially suggested in Connor and Davidson’s (2003) instrument validation study. Although Parallel Analyses (PA) indicated a two-factor structural model, we tested one to six factor solutions for best model fit using confirmatory factor analysis (CFA). Results supported a two-factor model of resilience, comprised of adaptability (8-item) and self-efficacy (6-item) themed items however, only the adaptability themed factor was found to be consistent with our view of resilience —a factor of protection against the development of psychopathology following trauma exposure. The adaptability themed factor may be a useful measure of resilience for post 9/11 U.S. military veterans.
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