In an experiment on the effect of sleep on memory, the independent variable might be
A) number of hours of sleep
B) recall score on a test
C) gender of the subjects
D) gender of the experimenter.

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated or changed in an experiment to see if it has an effect on another variable. In this case, the number of hours of sleep is the variable being manipulated to observe its effect on memory, making it the independent variable.

In an Experiment on the Effect of Sleep on Memory