Simple genetic models can be fitted to twin data using software packages such as LISREL (Jöreskog and Sörbom, 1986a). After discussion of data preparation and routine checks on possible violation of assumptions of the twin method, we illustrate univariate, bivariate, and multivariate genetic models which can be tested in cross-sectional twin data using LISREL. These include models for cohort or cohabitation effects, genotype x sex interaction, and certain types of genotype x environment interaction and genotype-environment correlation.

Original languageEnglish
Pages (from-to)9-35
Number of pages27
JournalBehavior genetics
Issue number1
StatePublished - Jan 1989


  • structural modeling
  • twin data analysis


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