Assessing competence in the use of motivational interviewing
Received 19 July 2004; received in revised form 13 October 2004; accepted 28 October 2004.
Abstract
This report presents reliability, validity and sensitivity indices for the Motivational Interviewing Treatment Integrity (MITI) scale. Factor analysis of MI treatment sessions coded with the Motivational Interviewing Skills Code (MISC) was used to derive 10 elements of MI practice, forming the MITI. Canonical correlation revealed that the MITI captured 59% of the variability in the MISC. Reliability estimates for the MITI were derived using three masked, independent coders. Intra-class coefficients ranged from .5 to .9 and were generally in the good to excellent range. Comparison of MITI scores before and after MI workshops indicate good sensitivity for detecting improvement in clinical practice as result of training. Implications for the use of this instrument in research and supervision are discussed.
Center on Alcoholism, Substance Abuse, and Addictions, University of New Mexico, Albuquerque, NM, USA
Corresponding author. Department of Psychology Center on Alcoholism, Substance Abuse and Addictions, University of New Mexico, Albuquerque, NM 87131 1161, USA. Tel.: +1 505 925 2375; fax: +1 505 925 2393
ABSTRACT