Table of Contents

1 The Scope of Genetic Analyses.- 2 Data Summary.- 3 Biometrical Genetics.- 4 Matrix Algebra.- 5 Path Analysis and Structural Equations.- 6 LISREL Models and Methods.- 7 Model Fitting Functions and Optimization.- 8 Univariate Analysis.- 9 Power and Sample Size.- 10 Social Interaction.- 11 Sex-limitation and G × E Interaction.- 12 Multivariate Analysis.- 13 Direction of Causation.- 14 Repeated Measures.- 15 Longitudinal Mean Trends.- 16 Observer Ratings.- 17 Assortment and Cultural Transmission.- 18 Future Directions.- Appendices.- A List of Participants.- B The Greek Alphabet.- C LISREL Scripts for Univariate Models.- C.1 Path Coefficients Model.- C.2 Variance Components Model.- C.3 Model for Means and Covariances.- C.4 Univariate Genetic Model for Twin pairs and Singles.- C.5 Age-correction Model.- D LISREL Script for Power Calculation.- D.1 ACE Model for Power Calculations.- E LISREL Scripts for Multivariate Models.- E.1 Genetic Factor Model.- E.2 Genetic Factor Model Using z Variables.- E.3 Bivariate Genetic Factor Model.- E.4 Genetic Cholesky Model.- E.5 Independent Pathway Model.- E.6 Common Pathway Model.- F LISREL Script for Sibling Interaction Model.- F.1 Sibling Interaction Model.- G LISREL Scripts for Sex and G × E Interaction.- G.1 General Model for Scalar Sex-Limitation.- G.2 Scalar Sex-Limitation Model.- G.3 General Model for G × E Interaction.- G.4 Scalar G × E interaction model.- H LISREL Script for Rater Bias Model.- H.1 Rater Bias Model.- H.2 CBC Items for Internalizing Scale Score.- I LISREL Scripts for Direction of Causation.- I.1 Reciprocal Causation Model.- I.2 Bivariate Genetic Model.- I.3 Bivariate Genetic Cholesky Model.- J LISREL Script and Data for Simplex Model.- J.1 Data Matrix for Phenotypic Simplex Model.- J.2 Genetic Simplex Model.-J.3 Data Matrices for Genetic Simplex Model.- J.4 Output from Genetic Simplex Model.- J.5 Output from Genetic Factor Model.- K LISREL Scripts for Assortment Models.- K.1 Social Homogamy Model.- K.2 Phenotypic Assortment Model.