Control Groups Are Important in Experiments Because

question 90

Multiple Choice

Control groups are important in experiments because:

• A) they make calculations of the correlation coefficient possible.
• B) they provide a needed comparison of the confounding variables.
• C) they provide a standard of comparison for the experimental group.
• D) they decrease internal validity and external validity.

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Definitions:

Reactivity Period

A time frame in which individuals or systems are more sensitive to environmental stimuli or stressors, affecting their responses or behaviors.

Tonic Neck Reflex

A primitive reflex in newborns which causes them to turn their head to one side, automatically raising the arm and leg on that side, and lowering them on the opposite.

Alkaline Soap

Soap with a pH level above 7, which can neutralize acid and is often considered gentler on the skin.

Circumcision Pain

The discomfort and pain experienced as a result of the surgical removal of the foreskin from the penis.