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John C. Loehlin, Ph.D.
Professor Emeritus

Email:loehlin@psy.utexas.edu Phone: 475-7008 Office: SEA 3.218 See also Individual Differences and Evolutionary Psychology

John Loehlin is Professor Emeritus of Psychology and Computer Science at the University of Texas at Austin. He was born in India in 1926 of U. S. missionary parents, and attended mission schools in that country. He received an A.B. in English from Harvard in 1947, and a Ph.D. in Psychology from the University of California at Berkeley in 1957. He was on active service in the U.S. Naval Reserve in 1951-53 during the Korean war. He taught at the University of Nebraska from 1957 to 1964, before moving to the University of Texas, where he has remained since, except for a visiting semester at the Institute for Behavioral Genetics at the University of Colorado and a year at the Center for Advanced Study in the Behavioral Sciences in Palo Alto. He has served as president of the Behavior Genetics Association and of the Society for Multivariate Experimental Psychology. He received the Dobzhansky Award from the former in 1991. He is married and has two children. His research has chiefly focused on the genetic and environmental contributions to individual differences in normal human personality traits and abilities; he has also been concerned with racial differences and with computer modeling. He has been involved in several twin family, and adoption studies, including the National Merit Twin Study with R. C. Nichols, an Israeli family study of spatial abilities with S. Sharan and R. Jacoby, and the Texas Adoption Project with J. M. Horn and L. Willerman.

Major Publications

Loehlin, J. C. (1968). Computer models of personality. New York: Random House.

Loehlin, J. C., Lindzey, G., & Spuhler, J. N. (1975). Race differences in intelligence. San Francisco: Freeman.

Loehlin, J. C., & Nichols, R. C. (1976). Heredity, environment, and personality: A study of 850 sets of twins. Austin, TX: University of Texas Press.

Loehlin, J. C. (1987). Latent variable models: An introduction to factor, path, and structural analysis. Hillsdale, NJ: Erlbaum.

Loehlin, J. C. (1992). Genes and environment in personality development. Newbury Park, CA: Sage.

Loehlin, J. C., Medland, S. E., Montgomery, G. W., and Martin, N. G. (2005). Eysenck's Psychoticism and the X-linked androgen receptor CAG polymorphism in additional Australian samples. Pers. Indiv. Diffs., 39: 661-667. PDF

McFadden, D., Loehlin, J. C., Breedlove, S. M., Lippa, R. A., Manning, J. T. and Rahman, Q. (2005). A reanalysis of five studies on sexual orientation and the relative length of the 2nd and 4th fingers (the 2D:4D ratio). Archiv. Sex. Behav., 34: 341-356. PDF

Loehlin, J. C., Jönsson, E. G., Gustavsson, J. P., Stallings, M. C., Gillespie, N. A., Wright, M. J., and Martin, N. G. (2005). Psychological masculinity-femininity via the gender diagnosticity approach: Heeritability and consistency across ages and populations. J. Pers., 73: 1295-1319.

Loehlin, J. C., Neiderhiser, J. M., and Reiss, D. (2005). Genetic and environmental components of adolescent adjustment and parental behavior: A multivariate analysis. Child Devel. 76: 1104-1115.

Loehlin, J. C., McFadden, D., Medland, S. E., and Martin, N. G. (2006). Population differences in finger-length ratio: Ethnicity or latitude? Archiv. Sex. Behav. 35: 739-742. PDF

Harden, K. P., Turkheimer, E., and Loehlin, J. C. (2007). Genotype by environment interaction in adolescents' cognitive aptitude. Behav. Genet. 37: 273-283.

Loehlin, J. C., Horn, J. M., and Ernst, J. L. (2007). Genetic and environmental influences on adult life outcomes: Evidence from the Texas Adoption Project. Behav. Genet. 37: 463-476. PDF

Loehlin, J. C. (2007). The strange case of c2 = 0: What does it imply for theories of behavioral development? Res. Hum. Devel. 4: 151-162.