|Title||Specificity of Symptoms in Rdc Endogenous Depression |
|Publication Type||Journal Article |
|Year of Publication||1989 |
|Authors||Robins CJ, Block P, Peselow ED |
|Journal||Journal of Affective Disorders |
|Keywords||Behavioral biology - Human behavior 12504, Hominidae  Human Medicine, Medical Sciences Behavior Neurology Psychiatry Primates Mammalia Vertebrata Chordata Animalia 07004, Medical Sciences Human Medicine, Nervous system - Pathology 21002, Pathology - Diagnostic 20506, Psychiatry - Psychopathology, psychodynamics and therapy |
|Abstract||The Research Diagnostic Criteria (RDC) define endogenous depression by the presence of a particular subset of depressive symptoms. This typological approach to classification implicitly assumes that endogenous and non-endogenous patients differ only or primarily in this subset of symptoms, rather than simply in severity of all depressive symptoms. We tested this assumption in a sample of 80 patients with a current episode of major depressive disorder. Whereas RDC endogenous patients (n = 53) had significantly higher levels of most criterial symptoms than did non-endogenous patients (n = 27), they differed on almost no non-endogenous symptoms. These findings support the concept of a specific endogenous symptoms cluster.