A Researcher Decides to Investigate Whether There Are Any Changes

question 4

Multiple Choice

A researcher decides to investigate whether there are any changes in people's IQ scores from early adulthood through late adulthood.The researcher (and others) begins with a sample of 21-year-olds and plans to follow this group until they are 80 years old.The type of research design she is planning to employ is called

• A) cross-sectional.
• B) longitudinal.
• C) time-lag.
• D) sequential.

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Definitions:

Economic Efficiency

A state where resources are allocated in a way that maximizes the production of goods and services while minimizing waste and inefficiencies.

Fundamental Questions

Basic economic questions that include what to produce, how to produce, and for whom to produce, reflecting scarcity and resource allocation.

Market Economy

An economic system in which supply and demand determine the production and allocation of resources through decentralized decision-making.