In an experiment to determine the effects of exercise on motivation, exercise is the

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In this experiment, the researchers are manipulating the exercise variable to see how it affects motivation. Therefore, exercise is the independent variable. The dependent variable would be the measure of motivation that is being taken. The control condition may be included to compare the effects of exercise on motivation to a group who did not exercise. An intervening variable would refer to a variable that affects the relationship between the independent and dependent variables, but exercise is not serving that role in this particular experiment.

In an Experiment to Determine the Effects of Exercise on Motivation