In a popular magic routine known as “multiplying billiard balls”, magicians fool their audience by using an empty shell that the audience believes to be a complete ball. Here, we present some observations suggesting that the spectators do not merely entertain the intellectual belief that the balls are all solid, but rather automatically and immediately perceive them as such. Our observations demonstrate the surprising potency and genuinely perceptual origin of amodal volume completion.
FaberA. (2012). Investigation of insight with magic tricks (Doctoral dissertation). Graduate School of Systemic Neurosciences, Ludwig-Maximiliams-Universität München, Munich, Germany
2.
GerbinoW.ZabaiC. (2003). The joint. Acta Psychologica, 114(3), 331–353
3.
HeldR. T.CooperE. A.O'BrienJ. F.BanksM. S. (2010). Using blur to affect perceived distance and size. ACM Transactions on Graphics, 29(2). http://doi.acm.org/10.1145/1731047.1731057
4.
KanizsaG. (1970). Amodale Ergänzung und “Erwartungsfehler” des Gestaltpsychologen [Amodal completion and expectancy failures of Gestalt psychology]. Psychologische Forschung, 33(4), 325–344. doi:10.1007/BF00424558
5.
KanizsaG. (1985). Seeing and thinking. Acta Psychologica, 59(1), 23–33
6.
KanizsaG.GerbinoW. (1982). Amodal completion: Seeing or thinking? In BeckJ. (Ed.), Organization and representation in perception (pp. 167–190). Hillsdale, NJ: Erlbaum
7.
MetzgerW. (1941). Psychologie: Die Entwicklung ihrer Grundannahmen seit der Einführung des Experiments. Dresden/Leipzig: Verlag von Theodor Steinkopff
8.
MichotteA.ThinèsG.CrabbéG. (1964). Les compléments amodaux des structures perceptives [Amodal completions of perceptual structures]. Louvain: Publications Universitaires, Studia Psychologica
9.
PylyshynZ. (1999). Is vision continuous with cognition? The case for cognitive impenetrability of visual perception. Behavioral and Brain Sciences, 22(3), 341–365. doi:10.1017/s0140525x99002022
10.
TseP. U. (1999). Volume completion. Cognitive Psychology, 39(1), 37–68
11.
van LierR. (1999). Investigating global effects in visual occlusion: From a partly occluded square to the back of a tree-trunk. Acta Psychologica, 102(2), 203–220. doi:10.1016/S0001-6918(98)00055-9
12.
van LierR.WagemansJ. (1999). From images to objects: Global and local completions of self-occluded parts. Journal of Experimental Psychology: Human Perception and Performance, 25(6), 1721–1741
