SAMHSA’s Evidence Basis for IFS Effectiveness and areas for further research

Internal Family Systems (IFS) Therapy is a psychotherapeutic modality developed in the mid-1980s, based on the observation that clients experience subpersonalities that come into internal conflict when dealing with challenges. The IFS model likens these subpersonalities to an “internal family.”

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The National Registry of Evidence-based Programs and Practices (NREPP) is an evidence-based repository and review system designed to provide the public with reliable information on mental health and substance use interventions. All interventions in the registry have met NREPP’s minimum requirements for review. The programs’ effects on individual outcomes have been independently assessed and rated by certified NREPP reviewers.