Estimation of interclass correlations for dermatoglyphics family data.

The aim of this study was to derive estimates of covariance of sibships of mixed sex and to find a reasonably efficient method of estimating interclass correlations, when there are unequal numbers of sibs in families drawn from the same population. The applicability of the method to quantitative studies is illustrated by the use of dermatoglyphics data. The new method has proved effective in practice and serves the purpose for which it was intended.