The Sequential Intercept Model was developed as a conceptual model to inform community-based responses to the involvement of people with mental and substance use disorders in the criminal justice system. It was developed over several years in the early 2000s by Mark Munetz, MD and Patricia A. Griffin, PhD, along with Henry J. Steadman, PhD, of Policy Research Associates, Inc.
The Sequential Intercept Model details how individuals with mental and substance use disorders come into contact with and move through the criminal justice system. The SIM helps communities identify resources and gaps in services at each intercept and develop local strategic action plans.