Comparative subjective effects of seven drugs including lysergic acid diethylamide (LSD-25).
Journal of Abnormal & Social Psychology November 1, 1955 Murray E. Jarvik, Harold A. Abramson, Martin Hirsch 32 citations
Five participants were tested nine times under two placebos (tap water) and seven drugs: ergometrine, alcohol, scopolamine, BOL-148, methamphetamine, LAE-32, and LSD-25. They completed a questionnaire about perceptual, physiological, and cognitive states before and 0.5, 2.5, and 4.5 hours after each dose. Differentiation among three lysergic acid derivatives and among alcohol, methamphetamine, and scopolamine was not clear, but the number of responses to the questionnaire under these drugs was clearly greater than under water. LSD-25 produced the most frequent and largest positive responses.