When Bill looks at his lamp alternately with his left eye and right eye, the image seems to jump from one position to another. This phenomenon illustrates
A) the Gestalt principle of similarity.
B) retinal disparity.
C) interposition.
D) the Gestalt principle of proximity.
E) convergence.

Question

Quizplus · Accepted Answer

The phenomenon described is an example of retinal disparity, the slight difference in the two images perceived by each eye that allows for depth perception. The jumping image occurs because the brain is combining the two slightly different images from each eye.

When Bill Looks at His Lamp Alternately with His Left