Three Hours After Going to Sleep,Shoshanna's Heart Rate Increases,her Breathing

question 387

Multiple Choice

Three hours after going to sleep,Shoshanna's heart rate increases,her breathing becomes more rapid,and her eyes move rapidly under her closed lids. Research suggests that Shoshanna is

• A)dreaming.
• B)ready to sleepwalk.
• C)exhibiting a sleep spindle.
• D)experiencing a night terror.

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Definitions:

Elasticity of Demand

A measure of how much the quantity demanded of a good responds to a change in the price of that good, quantitatively expressed as the percentage change in quantity demanded divided by the percentage change in price.

Inelastic

An inelastic good or service has a demand that does not change significantly when its price goes up or down.

Insensitive to Price

A characteristic of demand wherein the quantity demanded by consumers changes very little with a change in the product's price.

Unit Elastic

A situation in economics where the percentage change in quantity demanded is equal to the percentage change in price, resulting in no change in total revenue.