ANHEDONIA IN ENDOGENOMORPHIC DEPRESSION

In 1974 Klein suggested that anhedonia is the main symptom of endogeno morphic depression. In an attempt to test Klein's hypothesis, we used the Endogenomorphic subscale of the Hamilton Rating Scale for Depressi on (HRSD) to dichotomize 97 patients with unipolar major depression in to endogenomorphic and nonendogenomorphic subgroups. Anhedonia was rat ed using the Physical Anhedonia Scale and the Fawcett-Clark Pleasure C apacity Scale-Physical Pleasure. The endogenomorphic patients were sig nificantly more anhedonic than the nonendogenomorphic patients, even w hen the effect of depressive severity was controlled.