+Berenbaum, S. A. & Hines, M. (1992). Early androgens are related to childhood sex-typed toy preferences. Psychological Science, 3, 203–206.
+
+Berenbaum, S. A. & Snyder, E. (1995). Early hormonal infl uences on childhood sex-typed activity and playmate preferences: Implications for the development of sexual orientation. Developmental Psychology, 31, 31–42.
+
+Iijima, M., Arisaka, O., Minamoto, F., & Arai, Y. (2001). Sex differences in children’s free drawings: A study on girls with congenital adrenal hyperplasia. Hormones and Behavior, 40, 99–104
+
+Servin, A., Nordenström, A., Larsson, A., & Bohlin, G. (2003). Prenatal androgens and gender-typed behavior: A study of girls with mild and severe forms of congenital adrenal hyperplasia. Developmental Psychology, 39, 440–450.
+
+Berenbaum, S. A., Duck, S. C., & Bryk, K. (2000). Behavioral effects of prenatal versus postnatal androgen excess in children with 21-hydroxylase-defi cient congenital adrenal hyperplasia. Journal of Clinical Endocrinology and Metabolism, 85, 727–733.
+
+Hines, M., Golombok, S., Rust, J., Johnston, K. J., Golding, J., & Avon Longitudinal Study of Parents and Children Study Team. (2002). Testosterone during pregnancy and gender role behavior of preschool children: A longitudinal, population study. Child Development, 73, 1678–1687.
+
+The boy analogue of the CAH studies—
+Jürgensen, M., Hiort, O., Holterhus, P. M., & Thyen, U. (2007). Gender role behavior in children with XY karyotype and disorders of sex development. Hormones and Behavior, 51, 443–453.
+
+Alexander, G. M. & Hines, M. (2002). Sex differences in response to children’s toys in nonhuman primates (Cercopithecus aethiops sabaeus). Evolution and Human Behavior, 23, 467–479
+
+Hassett, J. M., Siebert, E. R., & Wallen, K. (2004). Sexually differentiated toy preferences in rhesus monkeys. Hormones and Behavior, 46, 91.
+
+Serbin, L. A., Poulin-Dubois, D., Colburne, K. A., Sen, M. G., & Eichstedt, J. A. (2001). Gender stereotyping in infancy: Visual preferences for and knowledge of gender-stereotyped toys in the second year. International Journal of Behavioral Development, 25, 7–15.
+
+Benenson, J. F., Liroff, E. R., Pascal, S. J., & Cioppa, G. D. (1997). Propulsion: a behavioural expression of masculinity. British Journal of Developmental Psychology, 15, 37–50
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+Dessens, A. B., Slijper, F. M. E., & Drop, S. L. S. (2005). Gender dysphoria and gender change in chromosomal females with congenital adrenal hyperplasia. Archives of Sexual Behavior, 34, 389–397