title: The Cannabis Expectancy Questionnaire for Men who have Sex with Men (CEQ-MSM): A measure of substance-related beliefs.
abstract: OBJECTIVE
  Substance-related expectancies are associated with substance use and post-substance use thoughts, feelings and behaviours. The expectancies held by specific cultural or sub-cultural groups have rarely been investigated. This research maps expectancies specific to gay and other men who have sex with men (MSM) and their relationship with substance patterns and behaviours following use, including sexual practices (e.g., unprotected anal intercourse). This study describes the development of a measure of such beliefs for cannabis, the Cannabis Expectancy Questionnaire for Men who have Sex with Men (CEQ-MSM).
  
  
  METHODS
  Items selected through a focus group and interviews were piloted on 180 self-identified gay or other MSM via an online questionnaire.
  
  
  RESULTS
  Factor analysis revealed six distinct substance reinforcement domains ("Enhanced sexual experience", "Sexual negotiation", "Cognitive impairment", "Social and emotional facilitation", "Enhanced sexual desire", and "Sexual inhibition"). The scale was associated with consumption patterns of cannabis, and in a crucial test of discriminant validity not with the consumption of alcohol or stimulants.
  
  
  CONCLUSIONS
  The CEQ-MSM represents a reliable and valid measure of outcome expectancies, related to cannabis among MSM. Future applications of the CEQ-MSM in health promotion, clinical settings and research may contribute to reducing harm associated with substance use among MSM, including HIV transmission.
authors.affiliation: Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Qld 4001, Australia. ab.mullens@student.qut.edu.au
authors.forename: A B
authors.initials: AB
authors.lastname: Mullens
authors.forename: R McD
authors.initials: RM
authors.lastname: Young
authors.forename: M
authors.initials: M
authors.lastname: Dunne
authors.forename: G
authors.initials: G
authors.lastname: Norton
mesh_terms: D000328:Adult; D001727:Bisexuality / Q000523:psychology; D005163:Factor Analysis, Statistical; D018451:Homosexuality, Male / Q000523:psychology*; D006801:Humans; D008297:Male; D002189:Marijuana Abuse / Q000523:psychology*; D010865:Pilot Projects; D012054:Reinforcement, Psychology; D015203:Reproducibility of Results; D012309:Risk-Taking; D011795:Surveys and Questionnaires