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Investigating the interaction between schizotypy, divergent thinking and cannabis use.

Schafer, G; Feilding, A; Morgan, CJ; Agathangelou, M; Freeman, TP; Valerie Curran, H; (2012) Investigating the interaction between schizotypy, divergent thinking and cannabis use. Consciousness and Cognition , 21 (1) 292 - 298. 10.1016/j.concog.2011.11.009. Green open access

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Abstract

Cannabis acutely increases schizotypy and chronic use is associated with elevated rates of psychosis. Creative individuals have higher levels of schizotypy, however links between cannabis use, schizotypy and creativity have not been investigated. We investigated the effects of cannabis smoked naturalistically on schizotypy and divergent thinking, a measure of creativity. One hundred and sixty cannabis users were tested on 1 day when sober and another day when intoxicated with cannabis. State and trait measures of both schizotypy and creativity were administered. Quartile splits compared those lowest (n=47) and highest (n=43) in trait creativity. Cannabis increased verbal fluency in low creatives to the same level as that of high creatives. Cannabis increased state psychosis-like symptoms in both groups and the high creativity group were significantly higher in trait schizotypy, but this does not appear to be linked to the verbal fluency change. Acute cannabis use increases divergent thinking as indexed by verbal fluency in low creatives.

Type: Article
Title: Investigating the interaction between schizotypy, divergent thinking and cannabis use.
Location: US
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.concog.2011.11.009
Publisher version: http://dx.doi.org/10.1016/j.concog.2011.11.009
Language: English
Additional information: This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. PMCID: PMC3657189
Keywords: Adult, Creativity, Cross-Over Studies, Female, Great Britain, Humans, Male, Marijuana Smoking, Schizotypal Personality Disorder, Verbal Behavior
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Clinical, Edu and Hlth Psychology
URI: https://discovery.ucl.ac.uk/id/eprint/1348009
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