The Effect of Lysergic Acid Diethylamide (L.S.D.) on Size Constancy
Canadian Psychiatric Association Journal October 1, 1959 T. E. Weckowicz 3 citations
An experiment on size constancy with 18 volunteers who each took 35 micrograms of LSD found that the drug increased the variability of each individual's performance. Participants served as their own controls. The effect of LSD was an increase in the variability of performance for each person.