Researchers studying the effects of caffeine tested the reaction times of women who first drank either a beverage with caffeine or a decaffeinated version of the same beverage.In this study, the type of beverage that each participant drinks would be:

Question

Quizplus · Accepted Answer

The type of beverage that each participant drinks (either caffeinated or decaffeinated) is the independent variable because it is being manipulated by the researchers to see its effect on the reaction times of the women.

Researchers Studying the Effects of Caffeine Tested the Reaction Times