In a Study on the Effects of Caffeine on Memory

question 88

Multiple Choice

In a study on the effects of caffeine on memory, participants drank a bottle of tasteless water containing 100, 50, or 0 milligrams of caffeine. The participants assigned to the group that drank bottled water with no caffeine represented the _____ in this study.

• A) dependent variable
• B) placebo control group
• C) meta-analysis
• D) experimental group

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