22. Cardon, L. R., Fulker, D. W., & Jöreskog, K. G. (1991). A LISREL 8 model with constrained parameters for twin and adoptive families. Behavior Genetics, 21, 327-350.

This methodological paper describes a LISREL model of parental transmission for use with twin and/or adoptive family data. The model incorporates genetic and environmental constraints due to assortative mating or cultural transmission.