Infant-Directed Speech (IDS)

question 11

Multiple Choice

Infant-directed speech (IDS) :

• A) impairs early language learning.
• B) promotes early language learning.
• C) promotes good grammar.
• D) makes mothers and fathers look like idiots.

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Definitions:

Marginal Cost

The amount of money needed to create an additional unit of a product or service.

Average Total Costs

The total costs of production (fixed and variable) divided by the quantity of output produced.

Total Fixed Costs

The sum of all costs that do not change with the level of production or services provided, such as rent and salaries.

Average Variable Cost

The total variable cost of producing a good divided by the quantity of the good produced, representing the variable cost per unit.