Accuracy of self-reported educational attainment among diverse patient populations: a preliminary investigation.

Despite speculation concerning the accuracy of self-reported information, particularly from certain patient populations, many neuropsychologists continue to estimate premorbid intellectual functioning on the basis of self-reported educational attainment. This study examined 116 individuals with diverse diagnoses [i.e., alcoholism, posttraumatic stress disorder (PTSD), schizophrenia or schizoaffective, and dementia] to determine the accuracy of their self-reported high school educational attainment. Results suggest that at least half of all participants were inaccurate as defined by discrepancies between actual and estimated GPA greater than.5 on a traditional 4-point grading scale. Most patients were inaccurate in the direction of overestimating their educational attainment. Patients diagnosed with alcoholism and PTSD were significantly less accurate in recalling their educational history when compared to a group of normal-control subjects. Several subjects, whose records could not be verified, were found to have not attended high school as they had claimed. These results underscore the potential inaccuracy that exists when estimating premorbid intelligence using self-reported information.