George Dropped His Keys into a Grate on the Sidewalk

question 76

Multiple Choice

George dropped his keys into a grate on the sidewalk in front of his house. He could see them, but couldn't reach them. He went back into his house and noticed that his son was using the vacuum cleaner to pick up some cereal that was spilled on the floor. This gave George the idea to put the long hose of the vacuum into the grate to pick up the keys. This sort of thinking relies on which of the following?

• A) mental set
• B) functional fixedness
• C) algorithms
• D) analogies

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Definitions:

Ocular Disparity

The difference in the visual images that each eye perceives because of the eyes' horizontal separation, which is used for depth perception.

Visual Reference

An object, document, or display that one can look at to obtain information or inspiration.

Binocular Disparity

The difference in image location viewed by the two eyes, which contributes to stereopsis and depth perception.

Astigmatism

A common eye condition resulting in blurred vision due to the irregular shape of the cornea or lens.