A - 35 Effects of Childhood Trauma Exposure on Psychological Symptom Endorsement among Adult ADHD Referrals

Abstract Objective Adults with attention-deficit/hyperactivity disorder (ADHD) are more likely to have childhood trauma exposure. Trauma exposure evaluations are not always standard practice for adult ADHD evaluations, but personality inventories like the Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF) are more commonly used to differentiate neurodevelopmental symptoms from psychiatric disorders. This study assessed the impact of childhood trauma exposure on MMPI-2-RF profiles among adults referred for ADHD evaluation. Method Cross-sectional data from 222 patients referred for neuropsychological evaluation for attention concerns and administered the Adverse Childhood Experiences (ACE) Checklist and MMPI-2RF were examined. Patients were racially diverse with a Mage 29.15 (SD = 7.63) and Meducation 16.15 years (SD = 2.13). Patients were divided into low (0–3 ACEs) and high (>3 ACEs) ACE groups. ACEs groups’ MMPI-2RF Restructured Clinical (RC) scale scores were compared via multivariate analyses of variance (MANOVAs) for the overall sample and subsample of those who ultimately received an ADHD diagnosis. Results The sample had 52% low ACEs/48% high ACEs, and 65% ADHD diagnosis/35% non-ADHD diagnosis. Overall, there was a significant multivariate effect (Wilks Λ =0.812; F(9,212) = 5.45, p < 0.001; np2 = 0.188); those with high ACE scores had significantly higher RC1, RC4, RC6, RC7, and RC8 scores. Significant MANOVA effects remained when the sample with subdivided. Across ADHD and non-ADHD subgroups, significantly higher RC4 and RC6 scores were consistent. Conclusions Exposure to childhood trauma had a significant impact on the MMPI-2-RF profile of adults being evaluated for ADHD. Screening for trauma exposure should be incorporated into standard neuropsychological batteries to inform the interpretation of personality inventories used to differentiate psychopathology.