1 Also known as savanna hypothesis.

2 The seminal article on the savanna preference is “Development of Visual Preference for Natural Environments” by John D. Balling and John H. Falkin, Environment and Behavior, 1982, vol. 14, p. 5–28.

3 See, for example, “The Biological Basis for Human Values of Nature” by Stephen R. Kellert, in The Biophilia Hypothesis by Stephen R. Kellert and Edward O. Wilson (editors), Island Press, 1993.

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