Detection of Malingered ADHD Using the MMPI-2-RF

This study examined the utility of the Minnesota Multiphasic Personality Inventory-2 Restructured Form (MMPI-2-RF) validity scales for detecting feigning and exaggeration of attention-deficit/hyperactive disorder (ADHD) among college students. Under a simulation study design, participants with and without ADHD were assigned to perform honestly or to feign or exaggerate deficits related to ADHD while completing self-report symptom inventories. Participants instructed to feign produced symptom profiles similar to honest clinical profiles and more severe than honest nonclinical profiles. Participants with ADHD instructed to exaggerate produced less severe profiles than those instructed to feign and more severe profiles than clinical controls. MMPI-2-RF scale Fp-r showed potential for use in malingered ADHD detection at a revised cut score, which was significantly lower than the cut score suggested in the test manual; use of the revised cut score will require further validation. Scales F-r, Fs, and FBS-r did not classify well, but should be assessed in future studies of malingered ADHD. Detection of exaggeration was consistently poorer than detection of feigning.