Professors 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 and 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)caffeine-independent variable
C)caffeine - predictor variable
D)word recall-independent variable

Question

Quizplus · Accepted Answer

Caffeine is the independent variable because it is the condition that the researchers manipulate to observe its effect on memory recall.

Professors Chase and Sanborn Are Conducting an Experiment on the Effects