A test of the validity of the motivational interviewing treatment integrity code

Cogn Behav Ther. 2008;37(3):183-91. doi: 10.1080/16506070802091171.

Abstract

To evaluate the Swedish version of the Motivational Interviewing Treatment Code (MITI), MITI coding was applied to tape-recorded counseling sessions. Construct validity was assessed using factor analysis on 120 MITI-coded sessions. Discriminant validity was assessed by comparing MITI coding of motivational interviewing (MI) sessions with information- and advice-giving sessions as well as by comparing MI-trained practitioners with untrained practitioners. A principal-axis factoring analysis yielded some evidence for MITI construct validity. MITI differentiated between practitioners with different levels of MI training as well as between MI practitioners and advice-giving counselors, thus supporting discriminant validity. MITI may be used as a training tool together with supervision to confirm and enhance MI practice in clinical settings. MITI can also serve as a tool for evaluating MI integrity in clinical research.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Counseling / education*
  • Counseling / standards*
  • Empathy
  • Evidence-Based Medicine
  • Female
  • Guideline Adherence
  • Hotlines
  • Humans
  • Inservice Training / standards*
  • Interview, Psychological / standards*
  • Male
  • Middle Aged
  • Motivation*
  • Outcome Assessment, Health Care / statistics & numerical data
  • Prisoners / psychology
  • Professional Competence / standards
  • Professional-Patient Relations
  • Psychometrics
  • Quality Assurance, Health Care / standards*
  • Randomized Controlled Trials as Topic
  • Substance-Related Disorders / rehabilitation
  • Treatment Outcome