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The distinction between the approaches represented by the DSM and Research Domain Criteria (RDoC) does not lie in the choice between categorical and dimensional diagnosis.1 Every dimensional diagnosis can be converted to a corresponding categorical one by judiciously applying some dichotomization rule. Every categorical diagnosis can be converted to a corresponding dimensional one, for example, by requiring multiple assessments and using the percentage positive.2
Kraemer HC. Research Domain Criteria (RDoC) and the DSM—Two Methodological Approaches to Mental Health Diagnosis. JAMA Psychiatry. 2015;72(12):1163-1164. doi:10.1001/jamapsychiatry.2015.2134