Cherny, S. S., Cardon, L. R., Fulker, D. W., and DeFries, J. C. (1992). Differential heritability across levels of cognitive ability.Behav. Genet.
Cyphers, L. H., Phillips, K., Fulker, D. W., and Mrazek, D. A. (1990). Twin temperament during the transition from infancy to early childhood.J. Am. Acad. Child Adoles. Psychiat.
DeFries, J. C., and Fulker, D. W. (1985). Multiple regression analysis of twin data.Behav. Genet.
DeFries, J. C., and Fulker, D. W. (1988). Multiple regression analysis of twin data: Etiology of deviant scores versus individual differences.Acta Genet. Med. Gemellol.
DeFries, J. C., Olson, R. K., Pennington, B. F., and Smith, S. D. (1991). Colorado Reading Project: An update. In Duane, D. D., and Gray, D. B. (eds.),The Reading Brain: The Biological Basis of Dyslexia, York Press, Parkton, MD, pp. 53–87.
DeFries, J. C., Gillis, J. J., and Wadsworth, S. J. (in press). Genes and genders: A twin study of reading disability. In Galaburda, A. M. (ed.),The Extraordinary Brain: Neurobiologic Issues in Developmental Dyslexia, Harvard University Press, Cambridge, MA.
Detterman, D. K., Thompson, L. A., and Plomin, R. (1990). Differences in heritability across groups differing in ability.Behav. Genet.
Dunn, L. M., and Markwardt, F. C. (1970).Examiner's Manual: Peabody Individual Achievement Test, American Guidance Service, Circle Pines, MN.
Fulker, D. W., Cardon, L. R., DeFries, J. C., Kimberling, W. J., Pennington, B. F., and Smith, S. D. (1991). Multiple regression analysis of sib-pair data on reading to detect quantitative trait loci.Read. Writ. Interdisciplin. J.
Heath, A. C., Neale, M. C., Hewitt, J. K., Eaves, L. J., and Fulker, D. W. (1989). Testing structural equation models for twin data using LISREL.Behav. Genet.
Jöreskog, K. G., and Sörbom, D. (1989).LISREL 7: A Guide to the Program and Applications, 2nd ed., SPSS, Inc., Chicago.
LaBuda, M. C., DeFries, J. C., and Fulker, D. W. (1986). Multiple regression analysis of twin data obtained from selected samples.Genet. Epidemiol.
Neale, M. C., Heath, A. C., Hewitt, J. K., Eaves, L. J., and Fulker, D. W. (1989). Fitting genetic models with LISREL: Hypothesis testing.Behav. Genet.
Plomin, R., and Rende, R. (1991). Human behavioral genetics.Annu. Rev. Psychol.
Wadsworth, S. J., Gillis, J. J., DeFries, J. C., and Fulker, D. W. (1989). Differential genetic aetiology of reading disability as a function of age.Irish J. Psychol.
Wechsler, D. (1974).Manual for the Wechsler Intelligence Scale for Children—Revised, Psychological Corp., New York.