Kahlenberg, S. M., and R. W. Wrangham. 2010. Sex differences in chimpanzees' use of sticks as play objects resemble those of children. Current Biology 20: R1067–68.
Current Biology
Kahneman, D. 2013. Thinking, Fast and Slow. New York: Farrar, Straus and Giroux.
Thinking, Fast and Slow
Kano, T. 1992. The Last Ape: Pygmy Chimpanzee Behavior and Ecology. Stanford, CA: Stanford University Press.
The Last Ape: Pygmy Chimpanzee Behavior and Ecology
—. 1998. Comments on C. B. Stanford. Current Anthropology 39:410–11.
Current Anthropology
Killen, M., and E. Turiel. 1991. Conflict resolution in preschool social interactions. Early Education and Development 2:240–55.
Early Education and Development
Kinsey, A. C., W. R. Pomeroy, and C. E. Martin. 1948. Sexual Behavior in the Human Male. Philadelphia: Saunders.
Sexual Behavior in the Human Male
Kirkpatrick, M. 1987. Clinical implications of lesbian mother studies. Journal of Homosexuality 14:201–11.
Journal of Homosexuality
Klofstad, C. A., R. C. Anderson, and S. Peters. 2012. Sounds like a winner: Voice pitch influences perception of leadership capacity in both men and women. Proceedings of the Royal Society B 279:2698–704.
Proceedings of the Royal Society B
Knott, C. D., and S. Kahlenberg. 2007. Orangutans in perspective: Forced copulations and female mating resistance. In Primates in Perspective, ed. S. Bearder et al., pp. 290–305. New York: Oxford University Press.
Primates in Perspective
Köhler, W. 1925. The Mentality of Apes. New York: Vintage.
The Mentality of Apes