Measuring grit in veterans with mental illnesses: Examining the model structure of grit.

Objective: The purpose of this study was to examine the model structure, reliability, and validity of the Grit-S for veterans with mental illnesses. Method: A total of 156 veterans with mental illnesses (Mage = 37.85, SD = 10.74) were recruited from Amazon MTurk to complete an online survey consisting of the Short Grit Scale (Grit-S), the Brief Resilience Scale, the PERMA-Profiler, the Patient Health Questionnaire-9, and the World Health Organization Disability Assessment Schedule II. Results: Results revealed that grit is a multidimensional construct in veterans with mental illnesses. The Grit-S was found to have acceptable reliability and concurrent validity. Grit was found to be negatively associated with functional disability in veterans with mental illnesses after controlling for demographic variables. Conclusions and Implications: The Grit-S is a multidimensional, reliable, and valid scale for measuring grit in veterans with mental illnesses. (PsycInfo Database Record (c) 2021 APA, all rights reserved).