The Relationships between Measures of General Depression and the Endogenous versus Reactive Classification

Abstract
The Pilowsky Questionnaire and a number of self-report measures of general depression were administered to 95 patients, mostly consecutive admissions to the psychiatric unit of a general hospital. There were high correlations (mean = .72) between the scores on the measures of general depression and the scores on the reactive and endogenous scales of the Pilowsky Questionnaire. The correlations between the scores on the measures of general depression and the classification score from the Pilowsky Questionnaire were generally low (mean = .33). The implications of these findings for the issue concerning the unitary or binary nature of depression are discussed .

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