Title |
Development and validation of the cannabis experiences questionnaire – Intoxication effects checklist (CEQ-I) short form
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Published in |
Schizophrenia Research, February 2017
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DOI | 10.1016/j.schres.2017.01.048 |
Pubmed ID | |
Authors |
Catherine A. Quinn, Hollie Wilson, Wendell Cockshaw, Emma Barkus, Leanne Hides |
Abstract |
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. 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. 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. 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. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 85 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 10 | 12% |
Student > Bachelor | 10 | 12% |
Student > Master | 9 | 11% |
Student > Postgraduate | 8 | 9% |
Student > Ph. D. Student | 6 | 7% |
Other | 18 | 21% |
Unknown | 24 | 28% |
Readers by discipline | Count | As % |
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Psychology | 21 | 25% |
Medicine and Dentistry | 21 | 25% |
Unspecified | 3 | 4% |
Biochemistry, Genetics and Molecular Biology | 1 | 1% |
Mathematics | 1 | 1% |
Other | 5 | 6% |
Unknown | 33 | 39% |