In the following hypothesis, what is the dependent variable? There is no measurable difference in incidence of acne in 15-year-olds who are placed on a chocolate-free diet
a. Fifteen-year-olds
b. No chocolate in the diet
c. Chocolate in the diet
d. Acne
ANS: D
A dependent variable is the response behavior or outcome that the researcher wants to predict or explain. An independent variable is a stimulus or activity that is manipulated or varied by the researcher to create an effect on the dependent variable. In this example, acne is the dependent variable and removal of chocolate from the diet is the independent variable.
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