Impulsivity and positive psychotic symptoms influence hostility in methamphetamine users

Lapworth, Kely, Dawe, Sharon, Davis, Penelope, Kavanagh, David, Young, Ross and Saunders, John (2009) Impulsivity and positive psychotic symptoms influence hostility in methamphetamine users. Addictive Behaviors, 34 4: 380-385. doi:10.1016/j.addbeh.2008.11.014

Author Lapworth, Kely
Dawe, Sharon
Davis, Penelope
Kavanagh, David
Young, Ross
Saunders, John
Title Impulsivity and positive psychotic symptoms influence hostility in methamphetamine users
Journal name Addictive Behaviors   Check publisher's open access policy
ISSN 0306-4603
Publication date 2009-04-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.addbeh.2008.11.014
Open Access Status Not yet assessed
Volume 34
Issue 4
Start page 380
End page 385
Total pages 6
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
Methamphetamine (MA) use is associated with hostility, aggression, and positive psychotic symptoms. However, little is known of the processes or mechanisms that underlie this relationship. The present research was designed to investigate putative mediating and moderating variables between MA dependence and hostility in a sample of injecting MA users (N = 237). Both positive symptoms of psychosis and higher levels of impulsivity functioned as mediators and moderators of this relationship. This pattern of findings suggests that MA use leads to greater hostility by increasing positive psychotic symptoms that contribute to a perception of the environment as a hostile and threatening place as well as by increasing impulsivity. Those who were high in positive symptoms and high in impulsivity were the most hostile. Individual differences in impulsivity and positive psychotic symptoms should be taken into account in the assessment and management of MA dependence.

Keyword Amphetamine
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online 24 November 2008

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Medicine Publications
School of Psychology Publications
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Citation counts: TR Web of Science Citation Count  Cited 37 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 39 times in Scopus Article | Citations
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Created: Thu, 07 Apr 2011, 22:16:43 EST by Sheila Cleary on behalf of Psychiatry - Royal Brisbane and Women's Hospital