Development and validation of the cannabis experiences questionnaire - Intoxication effects checklist (CEQ-I) short form

Catherine A Quinn, Hollie Wilson, Wendell Cockshaw, Emma Barkus, Leanne Hides

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalSchizophrenia Research
Volume189
Early online date8 Feb 2017
DOIs
Publication statusPublished - 1 Nov 2017
Externally publishedYes

Keywords

  • Adolescent
  • Cannabinoids/toxicity
  • Factor Analysis, Statistical
  • Female
  • Humans
  • Male
  • Marijuana Abuse/diagnosis
  • Marijuana Smoking/adverse effects
  • Psychotic Disorders/etiology
  • Reproducibility of Results
  • Surveys and Questionnaires
  • Young Adult

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