Perception of Munker-White illusion in 4-8-month-old infants.

There have been numerous studies of the Munker-White illusion, but few have focused on the perceptual development of it in human infants. Therefore, this study explores the perceptual development of the Munker-White illusion in infants. In this study, we created two kinds of Munker-White illusion patterns that had different subjective saturation, and investigated infants' preference for these two kinds of patterns. Previous studies have shown that infants had a preference for high colorimetric saturation stimuli. Therefore, if infants could perceive the Munker-White illusion, we postulated that they would show a preference for stimuli that have high subjective saturation. In experiment 1, 4-8-month-old infants showed a preference for the stimuli that had a higher subjective saturation. In experiment 2, we confirmed that the preference shown in experiment 1 was not dependent on the difference of the 'color area ratio' that existed in the stimuli of experiment 1. Our results suggest that 4-8-month-old infants can perceive Munker-White illusion.