References

Thank you to Dr. Phil Kellman from UCLA for helpful discussions about the principles of spatial perception at play in these illusions https://kellmanlab.psych.ucla.edu/

• Allport, G. W. & Pettigrew, T. F. Cultural influence on the perception of movement: The trapezoidal illusion among Zulus. The Journal of Abnormal and Social Psychology 55, 104–113 (1957).

• Arterberry, M. E., Kellman, P. J. & Arterberry, M. E. Development of perception in infancy: the cradle of knowledge revisited. (Oxford University Press, 2016).

• Behrens, R. R. The Life and Unusual Ideas of Adelbert Ames, Jr. Leonardo 20, 273 (1987).

• Behrens, R. R. Eyed Awry: The Ingenuity of Del Ames. The North American Review 282, 26–33 (1997)

• Behrens, R. R. Adelbert Ames, Fritz Heider, and the Chair Demonstration. Gestalt Theory 21, 7 (1999).

• Johnson, G. Demonstrations In Perception. (U.S. Department of the Navy, 1951).

• Ittelson, W. H. The Ames demonstrations in perception; a guide to their construction and use. xvi, 88 (Princeton University Press, 1952).