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Note on the Assumptions Underlying Holzinger's h 2 Statistic

Published online by Cambridge University Press:  08 February 2018

Joan May*
Affiliation:
Psychology Department, Institute of Psychiatry, Maudsley Hospital
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Holzinger set up his equations to show the combination of the factors—nature (A), nurture (B), and error(E)—which go to make up a score obtained by a particular twin on a particular test. If i X 1 and i X 2 are the twins in an identical pair and f X 1 and f X 2 are the twins in a fraternal pair then: —

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Part I.—Original Articles
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Copyright © Royal College of Psychiatrists, 1951 
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