BUGS scripts for the analysis of twin data

Below are a number of scripts for BUGS (WinBUGS) that can be used for modelling twin data. These are based on Van den Berg, Beem & Boomsma (2006), Van den Berg, Glas & Boomsma (2007), Van Leeuwen, Van den Berg & Boomsma (2008), and Van den Berg (2009).

ACE model for continuous twin data

ADE model for continuous twin data

Threshold model (liability) for binary/dichotomous twin data

Bivariate model (two phenotypes) with repeated measures for continuous twin data

Item Response Theory (IRT) model for twin item data

Item Response Theory (IRT) model for twin-family item data

Model for twin-family data in the presence of assortative mating and cultural transmission (non-linear constraints)