Chronic Users of LSD: The "Acidheads"
American Journal of Psychiatry September 1, 1968 K. H. Blacker, Reese T. Jones, George C. Stone et al. 85 citations
Twenty-one paid volunteers who were chronic users of LSD were interviewed and participated in a series of cognitive and perceptual tests and EEG studies. Among other observations derived from both interviews and testing, the authors noted that the group shared a set of magical-mystical beliefs and profound nonaggressive attitudes, as well as a unique sensitivity to certain types of sensory...