The goal of this project is to assess the Mental Health Services Act (MHSA) Prevention and Early Intervention (PEI) implementation of evidence-based practices (EBPs). The specific aims are to:   1) Characterize and operationalize Los Angeles County Department of Mental Health (DMH) criteria for successful implementation of EBPs.  2) Based on the criteria determined in Aim 1, determine obstacles to successful implementation of selected PEI EBPs.  3) Characterize and assess the reasons for optimal or less than planned outcomes for implementation of selected EBPs.  4) Provide recommendations for improving the process of stakeholder-driven decision-making that is balanced with fiscal and practical realities.