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 pair correctly identifies a variable in this experiment?
A)caffeine - dependent variable
B)word recall - experimental variable
C)caffeine - independent variable
D)word recall - independent variable

Question

Quizplus · Accepted Answer

Caffeine is the independent variable because it is being manipulated to observe its effect on memory recall, which is the dependent variable.