Pete Wanted to See Whether Caffeine Intake Increased a Subject's

question 13

Multiple Choice

Pete wanted to see whether caffeine intake increased a subject's arousal state. He randomly assigned 100 high school seniors to an experimental or control group. The experimental group drank a high caffeine soda, while the control group drank a caffeine-free soda. He then measured and compared arousal states for both groups. What type of design did Pete use?

• A) interrupted time series
• B) two-group posttest-only design
• C) classical experimental
• D) pretest-posttest

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