Assessment of the Short Grit Scale in patients with substance use disorder: Reliability and patient characteristics

IntroductionRecovery from substance use disorder requires sustained effort and perseverance. Grit is a resilience factor that may be important for people in recovery. Little research has been conducted on grit in patients with substance use disorder, especially in a large and varied sample.ObjectivesTo examine the Short Grit Scale (Grit-S) in patients with substance use disorder, our aims were to analyze its psychometric properties and use demographic and clinical characteristics to predict variance in Grit-S scores.MethodsIn this study of patients in treatment for substance use disorder, participants completed the Grit-S and other self-report measures. The psychometric properties of the Grit-S were assessed in outpatients (N=94) and a hierarchical regression was used to predict Grit-S variance in inpatients (N=1238).ResultsThe Grit-S demonstrated good internal consistency (α=.75) and strong test-retest reliability (unadjusted r=.81, adjusted r=.79, p values