An illustration that both the palm illusion and the moon's illusory size on the horizon are explained by the context which provides a contrast created by perceptual constancy.
References
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2.
BoringE. G. (1943) The moon illusion. Amer. J. Physics, 11, 55–60.
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HilgardE. R. (1957) Introduction to psychology. (2nd ed.) New York: Harcourt, Brace. Pp. 375–376.
4.
HolwayA. H., & BoringE. G. (1940a) The apparent size of the moon as a function of the angle of regard: further experiments. Amer. J. Psychol., 53, 537–553.
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HolwayA. H., & BoringE. G. (1940b) The moon illusion and the angle of regard. Amer. J. Psychol., 53, 109–116.
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TaylorD. W., & BoringE. G. (1942b) The moon illusion as a function of binocular regardAmer. J. Psychol., 55, 180–201.