Cognitive impairment and mental health problems are well documented within incarcerated populations. To identify affected inmates, a simple screening tool may be useful: the ImPACT Quick Test. 98 inmates without documented history of TBI participated. Study group ImPACT composite scores were significantly lower than the test’s normative population. This suggests that incarcerated individuals likely exhibit impaired cognitive performance when compared to non-incarcerated individuals, ultimately providing a link between inmates’ cognitive performance and mental health.