title: Cannabis expectancies in substance misusers: French validation of the Marijuana Effect Expectancy Questionnaire.
abstract: The aim of this study was to evaluate the psychometric properties of the French version of the Marijuana Effect Expectancy Questionnaire (48 items) and study the cannabis expectancies according to the patterns of substance use and psychiatric disorders (DSM-IV). A sample of 263 subjects (average age 33.1 years [SD = 8.7], 56% men) consisting of cannabis users (n = 64), psychiatric inpatients (n = 175, most of whom were hospitalized for withdrawal), and a control group (n = 24) completed the questionnaire. Internal reliability was good (α= .87) and temporal reliability was satisfactory, with 24 of 48 items having a significant κ ≥ .41. Factor analysis showed four main factors that explained 42.1% of the total variance. The women feared Cognitive Impairment and Negative Effects, and Negative Behavioral Effects more than the men. The onset age of cannabis use, onset age of abuse, abuse and dependence were associated with fewer negative expectancies. Cannabis dependents differed from abusers by more Relaxation and Social Facilitation expectancies. Patients with major depressive episodes, panic disorder, social anxiety disorder, or posttraumatic stress disorder feared negative effects the most. Schizophrenic patients expected more Perceptual Enhancement and Craving. The French version of the Marijuana Effect Expectancy Questionnaire has good psychometric properties and is valid to assess cannabis expectancies in adolescents and adults with substance use disorders.
authors: Groupe hospitalier Lariboisière-Fernand Widal, service de Psychiatrie d'Adultes, Paris, France. eric.guillem@noos.fr
authors: Eric
authors: E
authors: Guillem
authors: Christine
authors: C
authors: Notides
authors: Florence
authors: F
authors: Vorspan
authors: Marcel
authors: M
authors: Debray
authors: Isabel
authors: I
authors: Nieto
authors: Mayliss
authors: M
authors: Leroux
authors: Jean-Pierre
authors: JP
authors: Lépine
mesh_terms: D000328:Adult; D001290:Attitude; D005163:Factor Analysis, Statistical; D005260:Female; D005602:France; D006801:Humans; D008297:Male; D002189:Marijuana Abuse / Q000523:psychology*; D001523:Mental Disorders / Q000523:psychology; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D011594:Psychometrics / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D019966:Substance-Related Disorders / Q000523:psychology; D011795:Surveys and Questionnaires