A Physiological Comparison of ‘Endogenous' and ‘Reactive’ Depression

Abstract
The classification of depressive illness has long been a source of controversy in British psychiatry. In particular, phenomenological and statistical studies have failed to agree about the existence of a valid distinction between ‘endogenous' and ‘reactive’ depression (Carney, Roth and Garside (2); Eysenck (3); Kendell (7); Maxwell (9)).