Date of Award
Master Of Arts In Clinical Psychology
Colleges & School
College Of Arts And Sciences
Michael Vitacco, PhD
Library of Congress Subject Heading
People with mental disabilities;People with mental disabilities and crime;Malingering
Previous studies demonstrated individuals malingering on the Inventory of Legal Knowledge examination have lower cut scores than recommended. One hundred college students participated in a simulation design that examined response styles on the ILK. Individuals were randomly assigned to fake (n = 50) or honest (n = 50) groups. The ILK’s convergent validity was tested using the Competence Assessment to Stand Trial for Defendants with Mental Retardation, and Miller Forensic Assessment of Symptoms Test. As expected, individuals faking on the ILK had lower scores (M = 36.18, SD = 9.72) than individuals responding honestly (M = 54.38, SD = 4.84), t(98) = 11.85, p < .001, Cohen’s d = 2.37. A significant correlation exists between the ILK and M-FAST r(98) = -.55, p < .001, as well as the CAST-MR r(98) = .90, p < .001. The ILK may indicate unacceptable false-positive rates with cut scores below 47.
Wahl, Kevin D., "Detection Strategies for Feigning the Lack of Legal Knowledge with Individuals Simulating Mental Illness" (2014). Master's Theses, Capstones, and Projects. 87.