A white disk presented inside a small concentric circle (a display like the Delboeuf figure) looks lighter than when inside a larger one. The magnitude of the effect was measured with 20 observers (10 women, 10 men; ages 19 to 26 years). The decrements in luminance of the disk inside the smaller circle, in order to match the lightness of the disk inside the larger circle, are reported for three different grey backgrounds and correspond to 9.13, 10.33, and 10.46%.
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References
1.
BrignerW. L. (1980) Effect of perceived size upon perceived brightness. Perceptual and Motor Skills, 51, 1331–1334.
2.
CorenS. (1999) Relative contribution of lateral inhibition to the Delboeuf and Wundt-Hering illusions. Perceptual and Motor Skills, 88, 771–784.
3.
CorenS.GirgusJ. S. (1978) Seeing is deceiving: The psychology of visual illusions. Hillsdale, NJ: Erlbaum.
4.
DelboeufJ. (1865) Note sur certaines illusions d'optique: Essai d'une théorie psychophysique de la maniere dont l'oleil apprécie les distances et les angles. Bulletins de l'Académie Royale des Sciences, Lettres et Beaux-arts de Belgique, 19, 195–216.
5.
DelboeufJ. (1893) Sur une nouvelle illusion d'optique. Revue Scientifique, 51, 237–241.
6.
GuilfordJ. P. (1954) Psychometric methods. New York: McGraw-Hill.
7.
JaegerT.LongS. (2007) Effect of contour proximity and lightness on Delboeuf illusions created by circumscribed letters. Perceptual and Motor Skills, 105, 253–260.
8.
JaegerT.LordenR. (1980) Delboeuf illusions: Contour or size detector interactions?Perceptual and Motor Skills, 50, 376–380.
9.
LiX.GilchristA. L. (1999) Relative area and relative luminance combine to anchor surface lightness values. Perception & Psychophysics, 61, 771–785.
10.
NicolasS. (1995) Joseph Delboeuf on visual illusions: A historical sketch. American Journal of Psychology, 108, 563–574.
11.
OyamaT. (1962) The effect of hue and brightness on the size-illusion of concentric circles. American Journal of Psychology, 75, 45–55.
12.
SjostromK.PollackR. H. (1972) The role of lightness contrast in determining the magnitude of the Delboeuf illusion: A rejoinder to Weintraub and Cooper. Developmental Psychology, 6, 198–200.
13.
VicarioG. B. (1972) Phenomenal rarefaction and visual acuity under “illusory” conditions. Perception, 1, 475–483.
14.
WeintraubD. J.CooperL. A. (1972) Coming of age with the Delboeuf illusion: Brightness contrast, cognition, and perceptual development. Developmental Psychology, 6, 187–197.
15.
WinerB. J. (1971) Statistical principles in experimental design. New York: McGraw-Hill.
16.
ZanuttiniL.DaneykoO.ZavagnoD. (2009) The effect of Vicario's size illusion on lightness. Perception, 38, 94.
