Possible Biases in Heritability Estimates from Intraclass Correlation

Overview

Journal Theor Appl Genet

Publisher Springer

Specialty Genetics

Date 2013 Dec 7

PMID 24311205

Citations 8

Authors

R W Ponzoni

J W James

Affiliations

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Abstract

There is an inherent bias in intraclass correlations since the expectation of a ratio does not equal the ratio of expectations. A simple accurate approximation for this bias is derived, and it is found that the inherent bias is usually negligible. Selection of sires is known to bias half-sib heritability estimates, and appropriate formulae are given and discussed.

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