Objective: The present study evaluated a new self-report measure, the ADHD Symptom Infrequency Scale (ASIS), developed to identify individuals exaggerating symptoms in order to meet the criteria for Attention Deficit/Hyperactivity Disorder (ADHD). Method: A four group comparisons model (control, ADHD-diagnosed, an undiagnosed but possible, and analogue simulators) examined differences in endorsement rates across the measure. A total of 140 participants recruited online through Mechanical Turk completed questionnaires. After screening for eligibility, analyses were completed with106 participants (50% female gender, 75% Caucasian, Mean age = 33 SD = 9.8). Participants completed both the Barkley Adult ADHD Rating Scale and the novel measure. Both the ADHD and control groups were instructed to answer honestly, and the simulator group was instructed to complete the questionnaires as if trying to convince a doctor they had ADHD. Results: Items meant to detect symptom exaggeration were endorsed at a significantly higher rate for simulators compared to...

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