RT Journal Article SR Electronic T1 Improvements in the M Test as a Screening Measure for Malingering JF Journal of the American Academy of Psychiatry and the Law Online JO J Am Acad Psychiatry Law FD American Academy of Psychiatry and the Law SP 101 OP 104 VO 20 IS 1 A1 Rogers, Richard A1 Bagby, R. Michael A1 Gillis, J. Roy YR 1992 UL http://jaapl.org/content/20/1/101.abstract AB Recent studies of the M have failed to confirm its effectiveness as a screening measure for malingering. The present study involved a further analysis of 99 cases reported by Gillis et al. and the construction of Rule-Out and Rule-In scales. Both scales evidence excellent internal reliability, and their combined use was effective in accurately screening >80 percent of potential malingerers.