Linking basic and advanced motivational interviewing training outcomes for juvenile correctional staff in California.

Motivational interviewing (MI) is an evidence-based communication method that can be effective in engaging incarcerated juveniles in substance abuse programming and other treatment services. However, MI can be difficult to learn and often requires several training exposures for skill change. Few studies have examined MI training outcomes over time. This study reports outcomes for 222 juvenile corrections workers trained in MI in a three-day introductory and two-day advanced training. MI skills were measured via video-administered pre- and post-tests and with a written questionnaire. Combined results from a linear mixed model found that overall MI skills were positively associated with staff education level, and negatively associated with age and time between trainings. Those who attended their second training within nine months of the first training were more likely to score in the proficiency range. Motivation to use MI, belief in its efficacy with youth, job classification, and sex were not related to skill attainment.