Scientists Created a Visual Cliff by Placing a Thick Sheet

question 28

Multiple Choice

Scientists created a visual cliff by placing a thick sheet of clear glass over a drop-off.They found that by the time children are old enough to crawl,they will not venture over the "edge" of the "cliff." What skill have the children developed that makes them wary?

• A) Convergence
• B) Perceptual constancy
• C) The law of proximity
• D) Depth perception

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Definitions:

Experience

The knowledge or mastery of an event or subject gained through involvement in or exposure to it.

Productivity

The measure of the efficiency of production often calculated as the ratio of outputs produced to inputs used in the production process.

Constant Returns To Scale

Constant returns to scale occur when a proportional increase in all inputs leads to an equal proportional increase in output, implying efficiency in production.

Human Capital

Abilities, insights, and practice held by a person or community, seen through the lens of their contribution or expenditure to a corporation or state.