Executive function deficits in short-term abstinent cannabis users

MCHALE, Sue and HUNT, Nigel (2008). Executive function deficits in short-term abstinent cannabis users. Human Psychopharmacology: Clinical and Experimental, 23 (5), 409-415.

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Official URL: http://dx.doi.org/10.1002/hup.941
Link to published version:: 10.1002/hup.941

Abstract

Objectives - Few cognitive tasks are adequately sensitive to show the small decrements in performance in abstinent chronic cannabis users. In this series of three experiments we set out to demonstrate a variety of tasks that are sufficiently sensitive to show differences in visual memory, verbal memory, everyday memory and executive function between controls and cannabis users.

Methods - A series of three studies explored cognitive function deficits in cannabis users (phonemic verbal fluency, visual recognition and immediate and delayed recall, and prospective memory) in short-term abstinent cannabis users. Participants were selected using snowball sampling, with cannabis users being compared to a standard control group and a tobacco-use control group.

Results - The cannabis users, compared to both control groups, had deficits on verbal fluency, visual recognition, delayed visual recall, and short- and long-interval prospective memory. There were no differences for immediate visual recall.

Conclusions - These findings suggest that cannabis use leads to impaired executive function. Further research needs to explore the longer term impact of cannabis use.

Item Type: Article
Research Institute, Centre or Group: Psychology Research Group
Identification Number: 10.1002/hup.941
Depositing User: Sam Wharam
Date Deposited: 27 Sep 2012 11:44
Last Modified: 27 Sep 2012 11:44
URI: http://shura.shu.ac.uk/id/eprint/6200

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