“The Dual Diagnosis Capability in Addiction Treatment Index—referred to as the DDCAT—is a benchmark instrument for measuring addiction treatment program services for persons with co-occurring mental health and substance use disorders (see the References and Downloads for a copy of the instrument).

The DDCAT has been in development since 2003, and it is based upon a fidelity assessment methodology. Fidelity scale methods have been used to ascertain adherence to and competence in the delivery of evidence-based practices. This methodology has been used to assess mental health program implementation of the Integrated Dual Disorder Treatment (IDDT) model. IDDT is an evidence-based practice for persons with co-occurring disorders in mental health settings, and who suffer from severe and persistent mental illnesses (Mueser et al., 2003). The DDCAT utilizes a similar methodology as the IDDT Fidelity Scale, but has been specifically developed for addiction treatment service settings. Until the DDCAT, addiction treatment services for co-occurring disorders were guided by an amalgam of evidence-based practices and consensus clinical guidelines.”

The Dual Diagnosis Capability in Addictions Treatment (DDCAT) index is the original instrument which led to the parallel Dual Diagnosis Capability in Mental Health Treatment (DDCMHT) index in 2004. Both indices are based on the American Society of Addiction Medicine’s (ASAM) taxonomy of program dual diagnosis capability and have been subjected to a series of psychometric studies.

The DDCAT, described more fully in the following pages, guides programs and system authorities in assessing and developing the dual diagnosis capacity of addictions treatment services (McGovern, Matzkin, & Giard, 2007).

Click on this link to view or download a complete copy of the DDCAT Toolkit (from which the above is excerpted).

Click on this link to view or download a copy of the DDCAT index showing the seven domains and their respective subdomains.

Organized under each of the seven domains linked at the top of this page, there are links to particular resources that have been found useful for practitioners and programs that are pursuing greater dual diagnosis capability . . .