Several benchmark instruments have been developed to assess co-occurring capability or fidelity to specific co-occurring disorders treatments in mental health treatment programs. The Integrated Dual Disorders Treatment (IDDT) Fidelity Scale assesses fidelity to a specific evidence-based practice (Mueser et al., 2003; SAMHSA, 2003). This scale is clearly the gold standard for assessing fidelity to IDDT. Several more general agency self-assessment tools have been developed by Minkoff and Cline (2004) and Timko, Dixon, and Moos (2005). Research has shown significant over-reporting of capability with self-assessments (Adams, Soumerai, Lomas, & Ross-Degnan, 1999). For example, McGovern et al. (2006) found that when asked to categorize their addiction treatment programs using the ASAM taxonomy (Mee-Lee et al., 2001), program directors and clinical staff showed less than 50 percent agreement, with program managers rating their programs at a higher level of capability. Similarly, Lee and Cameron (2009) found that programs over-rated their co-occurring disorders capability compared to presumably more objective external raters.
The DDCMHT was developed as an objectively rated instrument for measuring co-occurring disorders capability within mental health treatment programs. It is broad, going beyond specific evidence-based practices such as the IDDT. The DDCMHT is also focused, examining specific co-occurring disorders-related services than scales used by Timko and others.