Titlebook: Methodology for Genetic Studies of Twins and Families; Michael C. Neale,Lon R. Cardon Book 1992 Springer Science+Business Media Dordrecht

expeditious

0258-123X ng interaction, multivariate and longitudinal data,observer ratings, and twin-family studies. Throughout, the methods areillustrated by applications to diverse areas such as obesity, majordepression, alcohol comsumption, delinquency, allergies, and commonfears. .978-90-481-4179-1978-94-015-8018-2Series ISSN 0258-123X

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intrigue

Matrix Algebra,m this chapter, or skip it entirely, using it for reference only. We do not give an exhaustive treatment of matrix algebra and operations but limit ourselves to the bare essentials needed for structural equation modeling. There are many excellent texts for those wishing to extend their knowledge; we recommend Searle (1982) and Graybill (1969).

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Biometrical Genetics,at give our structural models a degree of validity quite unusual in the social sciences. The purpose of this chapter is to provide a brief introduction to biometrical models. Extensive treatments of the subject have been provided by Mather and Jinks (1982) and Falconer (1990). Here we employ the notation of Mather and Jinks.

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Assortment and Cultural Transmission,C in this text, were involved. Because the process of assortative mating — „like marrying like“ — was assumed to involve only C, the model was essentially one of .. In some situations this may well be a plausible model to adopt (Rao .., 1974; Morton, 1982) and it is the first model we describe in this chapter.