A psychologist is studying the effect of varying levels of caffeine on anxiety.In this experiment,caffeine level is the
A) correlation coefficient.
B) dependent variable.
C) independent variable.
D) uncontrolled variable.

Question

Quizplus · Accepted Answer

Caffeine level is the variable that is being intentionally manipulated by the psychologist, making it the independent variable. Anxiety is the variable being measured and is dependent on the level of caffeine, making it the dependent variable. The correlation coefficient is a statistical measure used to assess the relationship between two variables and is not applicable in this scenario. Uncontrolled variables are those that are not being intentionally manipulated or controlled by the experiment, and may potentially interfere with the results, and caffeine level is not an uncontrolled variable.

A Psychologist Is Studying the Effect of Varying Levels of Caffeine