An Experimenter Wants to Study the Relationship Between Caffeine and Reaction

question 103

Multiple Choice

An experimenter wants to study the relationship between caffeine and reaction time. She assigns participants as follows: Group One receives 100 mg of caffeine; Group Two receives 200 mg of caffeine; Group Three receives 300 mg of caffeine; and, Group Four receives no caffeine. Twenty minutes later all participants complete the reaction-time test. Which group is the control group?

• A) Group Four
• B) Group Three
• C) Group Two
• D) Group One

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Definitions:

Circular

In logic and argumentation, pertaining to a reasoning error where the conclusion is assumed in one of the premises; also known as circular reasoning.

Used To Clean Dishes

Describes tools, detergents, or other agents that facilitate the cleaning of cookware and tableware.

Too Narrow

A criticism typically directed at definitions or classifications that exclude relevant instances or elements.

Handheld Weapon

A weapon designed to be manually held and used by an individual, such as a knife, gun, or sword.