You are doing a study to determine whether smoking nicotine prior to taking a psychology test affects performance on that test. What is the independent variable in your study?
A) the psychology test
B) the participants in your study
C) the smoking of nicotine
D) the amount of nicotine

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated by the researcher, in this case the smoking of nicotine. This is what the researcher is testing to see if it affects performance on the psychology test. Therefore, the correct choice is C.

You Are Doing a Study to Determine Whether Smoking Nicotine