Semantic priming and verbal learning in current opiate users, ex-users and non-user controls

Journal article


Battistella, Stefania, Constantinou, Natasha, Morgan, Celia J. A., Davis, Paul, O'Ryan, Dominic and Curran, H. Valerie. (2012). Semantic priming and verbal learning in current opiate users, ex-users and non-user controls. Human Psychopharmacology. 27(5), pp. 499 - 506. https://doi.org/10.1002/hup.2255
AuthorsBattistella, Stefania, Constantinou, Natasha, Morgan, Celia J. A., Davis, Paul, O'Ryan, Dominic and Curran, H. Valerie
Abstract

Objective: Despite a growing interest in memory functions of chronic drug users, investigation of semantic and episodic memory in opiate users is limited, and findings of studies have been inconsistent. The present study aimed to assess semantic memory and episodic memory for both drug-related and neutral stimuli in current and ex-users of opiates. Methods: Using an independent group design, we assessed semantic priming and verbal learning in 16 current opiate users on a methadone maintenance programme, 16 ex-opiate users in rehabilitation programmes and 16 healthy controls. The groups were matched on verbal IQ, age and employment status. Results: We found that current and ex-users showed intact automatic and controlled semantic priming. Ex-users who had been abstinent for an average of 19 months showed a verbal learning impairment compared with controls. Both current and ex-users were impaired in recalling semantically unrelated words but unimpaired in recalling semantically related words. Conclusion: The findings suggest a relative lack of spontaneous use of mnemonic strategies and imply that highly structured information would help opiate-using clients in treatment. Copyright © 2012 John Wiley & Sons, Ltd.

Keywordsopiate; drug use; semantic priming; verbal learning; cognitive bias; cognitive deficit
Year2012
JournalHuman Psychopharmacology
Journal citation27 (5), pp. 499 - 506
PublisherJohn Wiley & Sons, Inc.
ISSN0885-6222
Digital Object Identifier (DOI)https://doi.org/10.1002/hup.2255
Scopus EID2-s2.0-84866652564
Page range499 - 506
Publisher's version
File Access Level
Controlled
Place of publicationUnited Kingdom
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