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:

Relay

A relay is an electromechanical switch used in electrical circuits to control a high-power or high-voltage load with a small input signal, often utilized for safety and control purposes.

Armature

The rotating part of an electric generator or motor that interacts with the magnetic field to produce electromotive force.

Chute Plates

Components used in machinery for guiding or directing materials through a designated path or chute.

Electrical Arc

An electrical arc is a visible plasma discharge caused by the flow of electric current through a normally nonconductive medium like air, usually resulting from a voltage breakdown between two electrodes.