The relationship between cannabis use and cognition in people diagnosed with first-episode psychosis.
Psychiatry Research August 23, 2020 Chloé de Vos, K. Leopold, Elisabeth S. Blanke et al.
Among 89 people diagnosed with first-episode psychosis, 61 were lifetime cannabis users (at least three times per week for four weeks) and 28 were non-users. Cannabis users were more likely to be male and had more positive symptoms, while non-users had more negative symptoms. No differences were found between the groups on tests of verbal memory, verbal fluency, and attention. The authors conclude that cannabis use showed no association with cognitive impairments in this population.