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A Comparative Study of the A-B Ridge Count on the Palms of Mental Defectives and the General Population

Published online by Cambridge University Press:  08 February 2018

T. C. Fang
T. C. Fang*
Affiliation:
Galton Laboratory, London
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Extract

The finger-prints of mental defectives have been investigated by Bonnevie (1927), Poll (1935) and M⊘ller (1935). It was found that the frequency of whorls was less in the feeble-minded and imbeciles than in the general population but there was no correlation between intelligence quotients and quantitative values of patterns among defectives. Very little investigation has been carried out on the epidermal ridges of palms in mental defectives except in the case of mongoloid imbeciles, where Cummins (1939) and Workman (1939) have investigated the main patterns. Penrose (1949) has measured the angles subtended at triradius t by triradii a and b, and the present writer has counted the epidermal ridges between the a and b triradii.

Type
Part I.—Original Articles
Information
Journal of Mental Science , Volume 95 , Issue 401 , October 1949 , pp. 945 - 948
Copyright
Copyright © Royal College of Psychiatrists, 1949 

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References

Cummins, H., and Midlo, C. (1943), Finger Prints, Palms and Soles. Philadelphia.CrossRefGoogle Scholar
Fisher, R. A. (1948), Statistical Methods for Research Workers. Edinburgh and London: Oliver & Boyd.Google Scholar
Fang, T. C. “A Preliminary Study on the Inheritance of the a-b Ridge Count on the Human Palm, with a Special Note on Mongolism. (Unpublished.) Google Scholar
Penrose, L. S. (1949), “Familial Studies on Palmar Patterns in Relation to Mongolism,” VIII International Genetical Congress, Stockholm.Google Scholar
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