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A model for comparative ratings in studies of within-family differences
L J Eaves1, M C Neale, J M Meyer
1Department of Human Genetics, Medical College of Virginia, Richmond 23298.
Behavior Genetics
|November 1, 1991
Abstract:
Comparative ratings between pairs of siblings or other relatives are commonly used to refine measures of intrafamily variation. A simple model, based on signal detection theory, is proposed which shows how comparative ratings can be used to estimate within-pair variances of true scores, which can, in turn, be modeled with any of the conventional approaches to partitioning genetic and environmental variance within families.