Except by doctor's order s I never take drugs or sleeping pills.
Indicates whether or not the subject never takes drugs or sleeping pills expect by doctor's orders, as part of Minnesota Multiphasic Personality Inventory -2-Restructured Form (MMPI-2-RF)
Ben-Porath, Y and Tellegen, A. (2008). Minnesota Multiphasic Personality Inventory-2-Restructured Form: Manual for administration, scoring, and interpretation. Minneapolis: University of Minnesota Press. Copyright 2008 by Regents of the University of Minnesota.