REPEATED LSD INGESTION AND PERFORMANCE ON NEUROPSYCHOLOGICAL TESTS
The Journal of Nervous and Mental Disease – June 01, 1972
Source: OpenAlex
Summary
LSD users showed no significant differences in neuropsychological performance compared to a matched control group of 20 individuals. Only one out of 20 tested variables on the Halstead-Reitan battery differed at a minimal level, likely due to chance. Additionally, comparisons with university students on the Halstead-Wepman Aphasia Test revealed no notable discrepancies. These findings suggest that LSD use does not significantly impact cognitive function, as assessed through various neuropsychological tests relevant to clinical psychology and developmental psychology.
Abstract
The results on the Halstead-Reitan neuropsychological battery were compared for a group of 20 LSD users and a normal control group matched for age, sex, education, and intelligence. Only one of 20 variables was significantly different at the 5 per cent level and this was thought to be due to chance. Thus, it was concluded that there was no difference between the two groups. A further comparison between LSD users and university students yielded no significant difference in the Halstead-Wepman Aphasia Test.