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The Classification of Depressive Illnesses

Published online by Cambridge University Press:  29 January 2018

H. J. Eysenck
H. J. Eysenck*
Affiliation:
Institute of Psychiatry, De Crespigny Park, Denmark Hill, London S.E.5
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Extract

As is well known, there has been a good deal of discussion about the unitary or binary nature of depression. Mapother (1926) and Lewis (1934) made a strong case for the unitary view on clinical grounds, Curran (1937) concurring. Kendell (1968) has reviewed the history of this argument; it is marred by confusion which has persisted through recent attempts to use statistical techniques of factor analysis and discriminant function analysis in an effort to find a more objective and empirical solution. It is the purpose of this brief note to draw attention to this confusion, to show how it has affected arguments of both adherents and opponents of the binary position, and to argue that the data are in fact in sufficient agreement to make possible a valid answer to both problems. It is suggested that the apparent disagreement between workers such as those of the Newcastle group (Kiloh and Garside, 1963; Carney, Roth and Garside, 1965) and the London (Maudsley) group (Kendell, 1968) is in fact quite irrelevant and is based on a misunderstanding of the statistical properties of factors, a misunderstanding apparently introduced in one of the first studies of this kind to be concerned with the problem of the classification of depressive illness, that by Hamilton and White (1959).

Type
Research Article
Information
The British Journal of Psychiatry , Volume 117 , Issue 538 , September 1970 , pp. 241 - 250
Copyright
Copyright © Royal College of Psychiatrists, 1970 

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