An Experimenter Wants to Study the Relationship Between Caffeine and Reaction

question 154

Multiple Choice

An experimenter wants to study the relationship between caffeine and reaction time.She assigns participants as follows: Group One receives 50 milligrams of caffeine;Group Two receives 100 milligrams of caffeine;Group Three receives 200 milligrams of caffeine;Group Four receives no caffeine.Twenty minutes later all participants complete the reaction-time test.In this experiment,which group was the control group?

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

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Definitions:

Interaction

The process by which two or more entities (people, organizations, etc.) communicate or influence each other.

Seating Arrangements

The organization of seats or places for people in a room, which can affect communication, interaction, and the dynamics of an event or meeting.

Visual Aids

Items like charts, graphs, or images used to support or enhance the communication of information.

Main Points

The primary or most important ideas, arguments, or pieces of information presented in a discussion, presentation, or piece of writing.