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Cross-Cutting Symptom Measures | Clinician-Rated Dimensions of Psychosis Symptom Severity | World Health Organization Disability Assessment Schedule 2.0

Excerpt

A growing body of scientific evidence favors dimensional concepts in the diagnosis of mental disorders. Limitations of a categorical approach to diagnosis include the failure to find zones of rarity between diagnoses (i.e., delineation of mental disorders from one another by natural boundaries), need for intermediate categories like schizoaffective disorder, high rates of comorbidity, need for frequent use of other or unspecified diagnoses, relative lack of utility in furthering identification of unique antecedent validators for most mental disorders, and lack of treatment specificity for the various diagnostic categories.

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