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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
T. C. Fang*
Affiliation:
Dept. of Zoology, University of Toronto
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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 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
Information
Journal of Mental Science , Volume 97 , Issue 407 , April 1951 , pp. 394 - 396
Copyright
Copyright © Royal College of Psychiatrists, 1951 

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References

Fang, T. C. (1949), “A comparative study of the a-b ridge count on the palms of mental defectives and the general British population,” J. Ment. Sci., 95, 401.Google Scholar
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