Kevin watches as his wife Denise walks toward the house. Even though Denise fills more and more of Kevin's visual field as she approaches, she does not appear to be growing larger as she moves closer to Kevin. This illustrates ______________
A) relative size
B) size constancy
C) retinal disparity
D) linear perspective
Answer: B
Rationale: Perceptual constancy is the ability to perceive objects as having constant shape, size, and color despite changes in perspective. In this example, size constancy prevents Kevin from thinking his wife is changing size.
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