Why Are Control Groups Included in Experiments

question 85

Multiple Choice

Why are control groups included in experiments?

• A)To determine whether two variables are correlated
• B)To ascertain cause-and-effect relationships
• C)To ensure that participant characteristics are essentially the same in each group
• D)To translate the hypothesis into something testable

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Definitions:

Opiate Drugs

Substances derived from opium or synthetically made to mimic its effects, typically used to relieve pain but also known for their potential for addiction and abuse.

Receptor Sites

Specific locations on cell membranes or within cells where hormones, neurotransmitters, drugs, or other molecules bind to elicit a biological response.

Endorphins

“Morphine within”—natural, opiatelike neurotransmitters linked to pain control and to pleasure.

Axon

A long, slender projection of a nerve cell that conducts electrical impulses away from the neuron's cell body.