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 below correctly names and identifies the variables in this experiment
A)word recall-outcome variable; caffeine-predictor 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

Word recall is the dependent variable because it is the outcome being measured and is expected to change based on the independent variable, which is caffeine. The independent variable, caffeine, is manipulated by the researchers to observe its effect on word recall.

Professors Chase and Sanborn Are Conducting an Experiment on the Effects