At Folger University, Drs. Chase and Sanborn are conducting an experiment on the effects of caffeine on memory. Participants are randomly assigned to a caffeine or a no-caffeine group; their recall of items on a word list is later assessed. Which alternative correctly names and identifies the variables in this experiment?
A)word recall - control variable; caffeine - experimental variable
B)word recall - independent variable; caffeine - dependent variable
C)word recall - dependent variable; caffeine - independent variable
D)word recall - experimental variable; caffeine - control variable

Question

Quizplus · Accepted Answer

In this experiment, the independent variable is caffeine or the variable being manipulated, and the dependent variable is word recall or the variable being measured. Therefore, option C is the correct alternative that correctly names and identifies the variables in this experiment.