REPEATED LSD INGESTION AND PERFORMANCE ON NEUROPSYCHOLOGICAL TESTS
The Journal of Nervous and Mental Disease June 1, 1972 M. Erik Wright, Terrence P. Hogan 31 citations
LSD users and matched normal controls showed no meaningful differences on the Halstead-Reitan neuropsychological battery. Out of 20 test variables, only one appeared statistically significant at the 5 percent level, which the authors attribute to chance. A separate comparison between LSD users and university students also found no significant difference on the Halstead-Wepman Aphasia Test. The findings indicate that, within this sample, LSD use was not associated with measurable impairment on these neuropsychological measures.