A Poll of Randomly Selected Canadians Between the Ages of 20

question 26

Essay

A poll of randomly selected Canadians between the ages of 20 and 29 reports that 35 of 410 men and 59 of 398 women suffered from insomnia at least once a week during the past year.

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Definitions:

Relative Size

A perceptual cue that allows the determination of depth and distance by comparing the size of objects with known sizes.

Retinal Disparity

The slight difference in the visual images that each eye perceives because of the different angles in which each eye views the world.

Accommodation

Accommodation in psychology refers to the cognitive process of revising existing cognitive schemas, perceptions, and understanding so that new information can be incorporated.

Interposition

A visual cue in depth perception where one object partially covers another, indicating that the covering object is closer to the observer.