Professor Morin wants to know whether eating sweets before bedtime causes children to take longer to fall asleep. In his experiment, whether or not a sweet is given before bedtime is the:

Question

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The independent variable is the variable that the researcher manipulates in order to observe its effects on other variables. In this case, Professor Morin is manipulating whether or not children are given sweets before bedtime. Therefore, the sweet is the independent variable. The dependent variable is the variable that is being observed or measured, which in this case would be how long it takes children to fall asleep. The control variable is a variable that is intentionally kept constant throughout the experiment, and extraneous variables are variables that are not of primary interest in the study but could influence the results.

Professor Morin Wants to Know Whether Eating Sweets Before Bedtime