Which is the best explanation for the visual illusion known as the Ames room?
Answer options:
A.
Ambiguity
B.
Fiction
C.
Occlusion
D.
Size constancy
How to approach this question
Recall the different types of visual illusions and their explanations. The Ames room is a classic example of a distortion illusion. Consider how it works: it's a specially built room that looks normal from one specific viewpoint. This manipulation of perspective and depth cues leads our brain to misapply size constancy.
Full Answer
D.Size constancy✓ Correct
The Ames room is a powerful visual illusion explained by the misapplication of size constancy. Size constancy is our tendency to perceive an object as being the same size, regardless of the changing size of the image it casts on our retina as it moves closer or further away. The Ames room is cleverly constructed to look like a normal rectangular room from a specific peephole, but it is actually a trapezoidal shape. Because we assume the room is rectangular, we misinterpret the retinal images of the people inside. We perceive the person in the further, larger corner as tiny, and the person in the nearer, smaller corner as giant, because our brain is holding onto the idea that they are at the same distance from us.
Common mistakes
Confusing the Ames room with other types of illusions like ambiguous figures (e.g., Necker Cube) or fictions (e.g., Kanizsa Triangle).
Expert