“Independent study that used DANA to evaluate neurocognitive performance of US coastguard personnel, an understudied military population. Objectives: Determine prevalence of PTSD and major depressive disorder (MDD) in this military population, assess the ability of two personality factors previously identified as vulnerabilities—distressed (Type D) personality and behaviorally inhibited (BI) temperament—to predict stress-related mental health problems, and compare neurocognitive performance of groups as a function of PTSD and MDD. Methods: 241 active duty coastguard personnel serving at 8 different boat stations were administered DANA cognitive tests, plus standardized surveys for PTSD, MDD, concussion history, Type D personality, BI temperament, combat exposure, and sleep quality. Results: BI temperament was strongly associated with PTSD but was not a significant predictor of MDD. In contrast, Type D personality strongly predicted MDD, but was not predictive of PTSD. Impaired neurocognitive performance was concentrated among those subjects whose surveys supported a diagnosis of PTSD and MDD. The deficit was most pronounced in simple reaction time and response inhibition (Go-No-Go). Sensitivity of DANA to PTSD/MDD: Study shows the sensitivity of DANA to detect deficits in cognition associated with PTSD and MDD.”