Принцип был изложен в кн.: Diamond, Jared. 1996. Guns, Germs, and Steel. New York: W. W. Norton.
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Thompson, R. A. 1987. “Empathy and Emotional Understanding: The Early Development of Empathy.” In N. Eisenberg and J. Strayer, eds. Empathy and its Development. New York: Cambridge University Press, 119–146.
