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An application of the analysis of covariance structures to the psychogenetical study of impulsiveness
Author(s) -
Eaves L. J.,
Martin N. G.,
Eysenck Sybil B. G.
Publication year - 1977
Publication title -
british journal of mathematical and statistical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.157
H-Index - 51
eISSN - 2044-8317
pISSN - 0007-1102
DOI - 10.1111/j.2044-8317.1977.tb00738.x
Subject(s) - covariance , analysis of covariance , trait , dizygotic twins , statistics , econometrics , variation (astronomy) , mathematics , psychology , computer science , medicine , physics , obstetrics , astrophysics , programming language
A method based on Jöreskog's approach to the analysis of covariance structures is applied to the genotype‐environment analysis of the covariation of four aspects of impulsiveness in male and female monozygotic and dizygotic twins. The data are consistent with a simple model which assumes additive gene action, random mating and environmental effects within families. Further, it is shown that genotypic factor loadings can be regarded as constant multiples of corresponding environmental loadings. Trait‐specific sex interactions are detected which suggest that some mechanism of sex‐limitation could contribute to specific variation.