1. The genetical analysis of covariance structure;Martin;Heredity,1977
2. Statistical power in covariance structure models;Matsueda,1986
3. Genetic and environmental determinants of information processing and special mental abilities: a twin analysis;McGue,1989
4. Genetic influence on phasic cardiac responding in reaction time and mental arithmetic tasks: a study of adolescent twins;Somsen,1985
5. Phasic cardiac responses in reaction time and mental arithmetic tasks: the dominant influence of mental task performance on heart rate in adolescents;Somsen,1985