| 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 |
| Volume | 16 |
| Pagination | 243-248 |
| Keywords | Behavioral biology - Human behavior 12504, Hominidae [86215] 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.
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