A Researcher Studies Language Development by Selecting a Sample of 2-Year-Old

question 6

Multiple Choice

A researcher studies language development by selecting a sample of 2-year-old children,a sample of 3-year-old children,and a sample of 4-year-old children.Each child's language skill is measured and the researcher plans to compare the scores for the three groups.This study is an example of

• A)a time-series design.
• B)an interrupted time-series design.
• C)a cross-sectional developmental design.
• D)a longitudinal developmental design.

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Definitions:

Economic Rents

Earnings in excess of the minimum necessary to keep a factor of production in its current use, often associated with restricted supply or monopoly power.

Imperfectly Competitive

A market structure where individual firms have some control over the price of their products due to a lack of perfect competition.

Market Price

The current price at which a good or service is bought and sold in a marketplace, determined by supply and demand dynamics.

Unit Of Output

The measure of the quantity of a product or service produced by a firm, industry, or economic sector.