Abstract
The development of a new instrument for measuring dissociation, the Somatoform Dissociation Index (SDI), based on somatic items embedded in the MMPI is described. Logistic regression analyses revealed a set of 11 MMPI items that best optimized discrimination of dissociative and non-dissociative patients. The SDFs split-half reliabilities were .85 and .83 across studies. Cronbach's alpha scores were .82 and .86, respectively. Convergent validity was confirmed by significant correlations between the SDI and three commonly used measures of dissociation. A cutoff score of 6 was the SDI score with the highest accuracy of clinical classification when dissociation was quantified by summing salient responses to the individual items. The utility of the SDI and the Somatoform Dissociation Questionnaire as viable measures of dissociation was compared and discussed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
