Assessment of ego functioning in multiple personality disorder.

The dissociative disorder known as multiple personality disorder (MPD) presents a diagnostic challenge to psychological assessment techniques. A case example is presented in which a new self-report, multifactorial measure of ego functioning discriminated distinct profiles for four personalities within one multiple personality organization. Interpretations of characteristics of the primary and secondary personalities based on the Bell Object Relations Reality Testing Inventory (BORRTI) are presented. The relationship between these findings and other approaches to psychological testing for dissociation and MPD are discussed. It is suggested that this approach will facilitate the clinical assessment of suspected MPD subjects and contribute to affording appropriate treatment to this population.