Effects of LSD-25 on Tests of Personality

Abstract
The present analysis pertains to the experiment reported by Brengelmann, Pare and Sandler (15) to assess the effect of 5-hydroxytryptophan (5-HTP) on lysergic acid diethylamide (LSD) by means of psychological tests. In the following, problems of measurement and validity of the LSD- “psychosis” are discussed.