Impulsivity and positive psychotic symptoms influence hostility in methamphetamine users

Lapworth, Kely, Dawe, Sharon, Davis, Penelope, Kavanagh, David, Young, Ross, & Saunders, John (2009) Impulsivity and positive psychotic symptoms influence hostility in methamphetamine users. Addictive Behaviors, 34(4), pp. 380-385.

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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.

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35 citations in Scopus
33 citations in Web of Science®
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ID Code: 28569
Item Type: Journal Article
Refereed: Yes
Keywords: Amphetamine, Aggression, Hostility, Impulsivity, Psychosis
DOI: 10.1016/j.addbeh.2008.11.014
ISSN: 0306-4603
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PHARMACOLOGY AND PHARMACEUTICAL SCIENCES (111500)
Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > PSYCHOLOGY (170100)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Deposited On: 12 Nov 2009 23:48
Last Modified: 09 Jul 2017 13:01

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