REPEATED LSD INGESTION AND PERFORMANCE ON NEUROPSYCHOLOGICAL TESTS
M. Erik Wright, Terrence P. Hogan
The Journal of Nervous and Mental Disease June 1, 1972 DOI: 10.1097/00005053-197206000-00005 via OpenAlex
Summary
AI-generated from the abstractLSD 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.
Study at a glance
| Characteristics | Observational cohort Peer reviewed |
|---|---|
| Sample size | 40 |
| Population | LSD users and normal controls matched for age, sex, education, and intelligence |
| Keywords | Neuropsychology Significant difference Neuropsychological test Clinical psychology Audiology |
| Citations | 31 |
| Key finding | LSD users did not differ from matched controls on the Halstead-Reitan neuropsychological battery or from university students on the Halstead-Wepman Aphasia Test. |
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.