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The American Journal of Psychiatry, VOL. 126, No. 3

Articles | September 01, 1969

A Further Account of the Idiots Savants, Experts with the Calendar

WILLIAM A. HORWITZ; W. EDWARDS DEMING; ROBERT F. WINTER

Am J Psychiatry 1969;126:412-415.

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Consultant in statistical surveys, 4924 Butterworth P1., N. W. Washington, D. C. 20016

Associate professor of statistics, New York University

1970, American Psychiatric Association

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Abstract

The authors present a further account of twins, classifiable as idiots savants, whose ability to name the day of the week for a given date in any year, and the converse, has led to conjecture on the mechanism by which they perform the feat. Their method is explained as the ability to subtract multiples of a 400-year calendar cycle from any given year.

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