Researchers who were studying memory had participants learn a list of words after consuming a soft drink with caffeine or a decaffeinated version of the same soft drink. The researchers then counted the number of words that were recalled from the list. In this study, the type of beverage (caffeinated or decaffeinated) would be

Question

Quizplus · Accepted Answer

The type of beverage, whether it contained caffeine or not, was deliberately manipulated by the researchers to see if it had an effect on memory recall. Therefore, it is the independent variable in this study.

Researchers Who Were Studying Memory Had Participants Learn a List