Using LISREL to analyze genetic and environmental covariance structure

Using LISREL to analyze genetic and environmental covariance structure.

Martin and Eaves (1977) developed a method for the analysis of genotypic and environmental covariance structure based on the work of J6reskog (1973). Their method is a general approach to the analysis of covariance structure which allows simultaneous testing of hypotheses about the sources and structure of covariation. The method provides maximumlikelihood estimates of genetical and environment...

Using LISREL and PLS to Measure Customer Satisfaction

Evolution of Genetic Variance-Covariance Structure

One of the features of organisms that makes the study of biology so compelling is their apparent complexity. Molecular, cellular, developmental, physiological, neurological, and behavioral systems are each fascinating in and of themselves, but it is their interaction that generates what we see as the organism as a whole. By necessity, biologists have a tendency to break down organisms into thei...

Estimates of genetic covariance functions assuming a parametric correlation structure for environmental effects

A random regression model for the analysis of ‘repeated’ records in animal breeding is described which combines a random regression approach for additive genetic and other random effects with the assumption of a parametric correlation structure for within animal covariances. Both stationary and non-stationary correlation models involving a small number of parameters are considered. Heterogeneit...

Using factor scores to detect G X E interactive origin of "pure" genetic or environmental factors obtained in genetic covariance structure analysis.

Moment expressions for individual factor scores can serve as simple tests for the presence of a particular class of interaction factors that are disguised as pure genetic and/or environmental factors. That is, individual genetic and environmental factor scores may be used to construct fourth-order moments of these factors in order to test whether a common genetic or environmental factor in the ...