Holzinger's HC Revised
- 1 April 1979
- journal article
- research article
- Published by Cambridge University Press (CUP) in Acta geneticae medicae et gemellologiae: twin research
- Vol. 28 (2) , 161-164
- https://doi.org/10.1017/s000156600000920x
Abstract
The formula H′C = 1 − CDZ/CMZ is suggested as a better summary of twin concordance data than the familiar Holzinger concordance formula, HC = (CMZ − CDZ)/ (1 − CDZ). The new formula better estimates degree of genetic determination, G, as calculated from a threshold model, but never exceeds unity, as G sometimes does. For high concordance rates, if CMZ + CDZ > 1, HC, may be more useful than either G or H′C.Keywords
This publication has 1 reference indexed in Scilit:
- The relative effect of nature and nurture influences on twin differences.Journal of Educational Psychology, 1929