Identifying Feigned ADHD in College Students: Comparing the Multidimensional ADHD Rating Scale to Established Validity Measures

Objective: There is increased concern for malingering in ADHD evaluations due to presence of incentives such as accommodations and medications. Although several validity tests are available to classify malingering in non-ADHD populations, there is no test with proven effectiveness to detect feigned ADHD. This study investigated the ability of the MARS Symptom Validity Index 4 (MARS SV-index 4) and two published validity tests (the Word Memory Test [WMT] and Clinical Assessment of Attention Deficit-Adult [CAT-A] Infrequency scale) to detect malingered ADHD. Method: The participants consisted of 68 young adults, 34 with ADHD. Participants completed the MARS, CAT-A, and WMT validity measures. Results: The MARS SV index-4 demonstrated higher sensitivity rates for simulated malingering (61.8%) at close to optimal specificity (88.2%) compared to two published tests (which had sensitivity 90%). Conclusion: The MARS shows good ability to detect feigned ADHD and appears to be useful for adult ADHD assessments.