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Development and validation of the cannabis experiences questionnaire - Intoxication effects checklist (CEQ-I) short form
Quinn, Catherine A. Wilson, Hollie Cockshaw, Wendell Barkus, Emma Hides, Leanne
Quinn, Catherine A.
Wilson, Hollie
Cockshaw, Wendell
Barkus, Emma
Hides, Leanne
Abstract
Objective: To develop and validate a short form of the Cannabis Experiences Questionnaire - Intoxication Effects (CEQ-I), a 42-item scale which measures the euphoric and paranoid-dysphoric effects of cannabis intoxication. Method: Exploratory and confirmatory factor analyses were conducted among 604 past-month cannabis users to develop the short form. The factor structure was replicated in a second sample of 146 past-month cannabis users. The concurrent validity of the scale was also examined. Results: Consistent with previous research, two factors were identified (paranoid-dysphoric; euphoric), and were replicated with confirmatory factor analyses. The most parsimonious scale consisted of 13 items. Correlations of short-form subscales with corresponding original subscales were high. The paranoid-dysphoric subscale was also moderately positively correlated with measures of psychotic-like experiences (PLEs) and psychological distress. Conclusions: The revised and validated CEQ-I short form can be used to explore the euphoric and paranoid-dysphoric effects of cannabis intoxication in young cannabis users, and whether these experiences increase their risk of developing cannabis use and psychotic disorders. The CEQ-I short form has the potential to aid in the identification of young cannabis users at risk of the paranoid-dysphoric effects of cannabis intoxication and may assist in the development of early intervention strategies targeting cannabis users with PLEs.
Keywords
cannabis experiences questionnaire, psychotic like experiences, psychosis, cannabis-induced, substance use, young people
Date
2017
Type
Journal article
Journal
Schizophrenia Research
Book
Volume
189
Issue
Page Range
91-96
Article Number
ACU Department
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled