title: A model for comparative ratings in studies of within-family differences.
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.
authors.affiliation: Department of Human Genetics, Medical College of Virginia, Richmond 23298.
authors.forename: L J
authors.initials: LJ
authors.lastname: Eaves
authors.forename: M C
authors.initials: MC
authors.lastname: Neale
authors.forename: J M
authors.initials: JM
authors.lastname: Meyer
mesh_terms: D006801:Humans; D008957:Models, Genetic; D010551:Personality / Q000235:genetics*; D010641:Phenotype; D012931:Social Environment; D014427:Twins / Q000235:genetics* / Q000523:psychology*