An evaluation of a brief motivational intervention among young ecstasy and cocaine users: no effect on substance and alcohol use outcomes

Addiction. 2006 Jul;101(7):1014-26. doi: 10.1111/j.1360-0443.2006.01290.x.


Aims: To investigate whether a stimulant- and alcohol-focused brief motivational intervention induces positive behaviour change among young, regular users of MDMA ('ecstasy'), cocaine powder and crack cocaine.

Design and measurements: A randomized trial of the intervention versus a control group who received written health risk information materials only. All participants completed a baseline self-assessment questionnaire before randomization. Outcome measures were self-reported period prevalence abstinence from ecstasy, cocaine powder and crack cocaine and the frequency and amount of stimulant and alcohol use in the previous 90 days, recorded at 6-month follow-up via self-completion questionnaire and personal interview.

Participants and setting: A total of 342 adolescent and young adult stimulant users (aged 16-22 years) were recruited and 87% were followed-up. The intervention was delivered by a team of 12 agency youth drug workers and two researchers at five locations in Greater London and south-east England.

Findings: There were no significant differences in abstinence for ecstasy, cocaine powder or crack cocaine use between the experimental and control groups. Contrasting follow-up with baseline self-reports, there were no between-group effects for changes in the frequency or amount of stimulant or alcohol use. Participant follow-up data suggested that the baseline assessment was a contributing factor in within-group behaviour change among experimental and control condition participants.

Conclusions: Our brief motivational intervention was no more effective at inducing behaviour change than the provision of information alone. We hypothesize that research recruitment, baseline self-assessment and contact with study personnel are influences that induce positive reactive effects on stimulant use.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Alcohol Drinking / prevention & control*
  • Alcohol Drinking / psychology
  • Behavior Therapy / methods
  • Cocaine-Related Disorders / psychology
  • Cocaine-Related Disorders / therapy
  • England
  • Female
  • Hallucinogens*
  • Humans
  • Interview, Psychological / methods
  • Male
  • Motivation
  • N-Methyl-3,4-methylenedioxyamphetamine*
  • Psychotherapy, Brief / methods*
  • Substance-Related Disorders / psychology
  • Substance-Related Disorders / therapy*


  • Hallucinogens
  • N-Methyl-3,4-methylenedioxyamphetamine