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Raymond, a One-Year-Old Infant, Loves Playing with His Rattle

question 27

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Raymond, a one-year-old infant, loves playing with his rattle. He holds it in his hand by making a tight fist and shakes it vigorously. This is an example of _____.


Definitions:

Economics

Economics is the social science that studies how individuals, governments, firms, and nations make choices on allocating scarce resources to satisfy their unlimited wants.

Experiments

Scientific procedures undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Natural Experiments

Observational study setups where the variables of interest change naturally, allowing researchers to study outcomes without direct manipulation.

Laboratory Experiments

Controlled testing environments where researchers manipulate variables to study effects in a lab setting.

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