Placebos Are Used in Experiments to

question 29

Multiple Choice

Placebos are used in experiments to

• A)control for the variability of individuals who tend to volunteer for research studies.
• B)control for the expectations of some research participants that they will improve just because they are in a research study.
• C)help determine whether an independent variable actually causes a statistically significant change in a dependent variable.
• D)make certain that the treatment and control group are randomly selected.

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Definitions:

Income Increases

Situations where individuals or households experience a rise in their earnings, leading to higher purchasing power.

Equilibrium Price

The price at which the quantity of a good or service demanded equals the quantity supplied, leading to market stability.

Equilibrium Quantity

The quantity of goods or services supplied and demanded at the equilibrium price.

Normal Good

A good for which demand increases as consumer income rises, holding all other factors constant.