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A Note on the A-B Ridge Count and Intelligence

Published online by Cambridge University Press:  08 February 2018

T. C. Fang*
Affiliation:
Department of Zoology, University of Toronto

Extract

The a-b ridge count, called the a-b count for short, is the number of epidermal ridges crossing or touching a fine straight line drawn joining the triradii a and b on the palm. The triradial point or the radiant when the former is absent is not included in the count. It was pointed out in a previous work (Fang, 1949) that on the assumption that the university students are more intelligent than the general population there is a consistent increase of the mean a-b count with intelligence. The results of the present study seem to agree with this finding.

Type
Part I.—Original Articles
Copyright
Copyright © Royal College of Psychiatrists, 1952 

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References

Fang, T. C., “A Comparative Study of the a-b Ridge Count on the Palms of Mental Defectives and the General British Population,” J. Ment. Sci., 1949, 95, 401.CrossRefGoogle Scholar
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