A Researcher Was Investigating the Link Between Memory and Caffeine

question 149

Multiple Choice

A researcher was investigating the link between memory and caffeine.Half the participants were given a caffeinated beverage before being asked to memorize a word list; the other participants were given a decaffeinated beverage before being asked to memorize the same word list.In this research study, the decaffeinated beverage would be:

• A)a placebo
• B)a confounding variable
• C)the dependent variable
• D)an inferential variable

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