Scoring the results requires a programmed Excel spreadsheet. A therapist can get the spreadsheet from Dr. Dell by e-mail (*mod edit- please do not post email addresses, whether your own or others'*), or (preferred) ISSTD member therapists can download it from the ISSTD website members-only area.
Here is the abstract of the peer-reviewed article describing the MID and its validation:
J Trauma Dissociation. 2006;7(2):77-106. The Multidimensional Inventory of Dissociation (MID): A comprehensive measure of pathological dissociation. Dell PF. Trauma Recovery Center, Norfolk, VA, USA. *mod edit- email address removed*
This article describes the development and validation of the Multidimensional Inventory of Dissociation (MID). The MID is a 218-item, self-administered, multiscale instrument that comprehensively assesses the phenomenological domain of pathological dissociation and diagnoses the dissociative disorders. The MID measures 14 major facets of pathological dissociation; it has 23 dissociation diagnostic scales that simultaneously operationalize (1) the subjective/ phenomenological domain of pathological dissociation and (2) the hypothesized dissociative symptoms of dissociative identity disorder (Dell, 2001a). The MID was designed for clinical research and for diagnostic assessment of patients who present with a mixture of dissociative, posttraumatic, and borderline symptoms. The MID demonstrated internal reliability, temporal stability, convergent validity, discriminant validity, and construct validity. The MID also exhibited incremental validity over the Dissociative Experiences Scale (DES) by predicting an additional 18% of the variance in weighted abuse scores on the Traumatic Experiences Questionnaire (TEQ). Confirmatory factor analysis (CFA) did not support a one-factor model of the MID's clinical scales (i.e., the 14 facets and the 23 diagnostic symptoms). In contrast, however, CFA of the MID's factor scales (Dell & Lawson, 2005) has strongly supported a one-factor model. It was concluded that both the MID's 168 dissociation items and the construct of pathological dissociation have a second-order, unifactorial structure.
PDF Download: Multidimensional Inventory of Dissociation *mod edit- link amended*