Scientists Created a Visual Cliff by Placing a Thick Sheet

question 309

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
• E)problem solving

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Definitions:

Price Level

The overall level of prices of goods and services in an economy at a given time, often measured by a price index.

Nominal Interest Rate

The stated rate of interest on a financial instrument, not accounting for the compounding effect or inflation.

Inflation Rate

The elevation in the percentage cost of goods and services across an economy over an established period.

Relative-price Variability

Fluctuations in the price of one good or service in relation to others, affecting purchasing decisions and economic equilibrium.