The Best Evidence That There Is a Critical Period for Language

question 101

Multiple Choice

The best evidence that there is a critical period for language acquisition is the fact that

• A) infants babble sounds that occur in their parents' native language.
• B) toddlers maintain a capacity to discriminate language sounds they have never heard.
• C) people most easily master the grammar of a second language during childhood.
• D) preschoolers typically fail to use proper syntax.

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Definitions:

Total Cost Curve

A graphical representation showing how the total cost of producing a good changes as the quantity produced changes.

Marginal Revenue Curve

A graph that shows the change in total revenue for each unit sold, illustrating how marginal revenue changes as output changes.

Multiplant Monopolist

A monopolistic firm that operates more than one production facility in different geographic locations to maximize profits and maybe meet differentiated demand.

Demand Curve

A graphical representation of the relationship between the price of a good or service and the quantity demanded for a given period.