Common Factors in Community Mental Health Intervention: A Scoping Review.

While there is considerable research and commentary devoted to common factors in psychotherapy, their implications for community mental health interventions are much less clear. In response, a scoping review was conducted to answer the question, 'What is the evidence base for common factors in community mental health intervention?' A comprehensive search of MEDLINE, PsycINFO, and Google Scholar was completed. A total of 60 publications were identified in this review with a focus primarily upon therapeutic alliance. Though methodologically diverse, this review supports the likely importance of alliance in the outcomes of community mental health interventions.