DEPRESSION FOLLOWING BRAIN TRAUMA IS ENHANCED IN PATIENTS WITH MILD DISCREPANCIES BETWEEN INTELLIGENCE AND IMPAIRMENT ON NEUROPSYCHOLOGICALSCORES

Analysis of the MMPI (Minnesota Multiphasic Personality Inventory) sco res from 135 (20 years to 60 years old) patients who had sustained clo sed head injuries supported the hypothesis df a nonlinear relationship between the severity of depression and the magnitude of the discrepan cy between intelligence and neuropsychological proficiency. Although t he MMPI Depression T scores for all groups of patients were elevated ( M=78, SD=13), patients with the least and greatest discrepancies betwe en intelligence and neuropsychological proficiency scored lower on Dep ression than patients with discrepancies within the z-score ranges -2. 0 and -1.1. The results of symmetrical covariance for either depressio n or complex partial epileptic-like experiences before comparisons bet ween groups suggested depression and the epileptic-like experiences sh are the same source of variance.