The Ponzo illusion
A)illustrates the principle of color constancy.
B)illustrates the principle of size-distance invariance.
C)entails the accurate perceptions of objects' sizes.

Question

Quizplus · Accepted Answer

The Ponzo illusion is based on the principle of size-distance invariance, which means that the perceived size of an object is determined not only by its retinal image but also by the environmental context in which it is viewed. In the Ponzo illusion, two identically sized horizontal lines are placed between converging lines, with the upper line appearing larger than the lower line. This is because the converging lines create a depth cue, which makes the upper line appear farther away and therefore larger. However, the retinal images of both lines are the same size, demonstrating that perceived size is influenced by context and not just physical size.

The Ponzo Illusion