Substance Use Disorder (SUD) Integrated Dual Disorder Treatment 101

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Adults with co-occurring mental illness and substance use disorders have far worse outcomes in employment, hospitalization, housing, and criminal justice involvement than their single disordered peers. This co-prevalence has been studied since the 1980s, yet despite this most service systems were organized to treat individuals with a single disorder, excluding those with co-occurring disorders, or providing sequential or parallel treatments that were incompatible or in conflict with each other.  Integrated and team-based services offer superior outcomes to parallel or sequential treatments, and call providers to develop interventions to assist individuals in moving toward recovery for both illnesses simultaneously. 

Integrated Dual Disorder Treatment (IDDT) was designed following systematic study of high intensity COD treatment needs and alterations of the Assertive Community Treatment (ACT) model.  Within this training attendees will understand the components of IDDT, including fidelity and outcome measurement.  Specific attention will be paid to the development of stage-matched assessment, treatment planning, and treatment interventions for adults with co-occurring mental health and substance use disorders using the IDDT model.  This training is available on Improving MI Practices site, and is to be followed with a live remote IDDT 101 course.

  • Theories and concepts of human behavior in the social environment.
  • Social work practice, knowledge and skills.
  • Social work research, program evaluation, or practice evaluation.
  • Social work agency management or administration.
  • Social work ethics and standards of professional practice.

  1. Participants will understand the history of public mental health and substance use disorder care in the US over the last years, and how Integrated Dual Disorder Treatment (IDDT) was developed and studied initially
  2. Participants will identify the methods used to develop and test evidence-based practices for co-occurring disorders
  3. Participants will understand staging and stages of change, as well as how to use staging tools with clients and treatment teams to decide on appropriate interventions
  4. Participants will identify the components of fidelity measurement of IDDT

Jennifer Harrison

PhD, LMSW, CAADC

Jennifer Harrison, PhD, LMSW, CAADC is a social worker, chemical addictions counselor, and an associate professor and interim director for the School of Social Work at Western Michigan University.  Jennifer’s clinical work focuses on individuals with co-occurring needs.  Her research interests and publication record include international social justice, co-occurring needs, and peer services in behavioral health.  Her teaching focuses on field education, direct social work practice, and study abroad course development and partnerships in Guatemala, India, and Mexico.  She is a lead reviewer for the Michigan Fidelity Assessment and Support Team (MiFAST), providing reviews, consultations, and trainings for organizations implementing evidence-based practices throughout the state and nation.  Jennifer is a co-principal investigator in two HRSA funded projects to impact the interprofessional behavioral health workforce, I-PEER and MY-PROUD, and has developed a digital application for goal attainment scaling with interprofessional colleagues in occupational therapy called Goal Scaling Solutions, Inc.

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