Psychology 200 - Research Methods for Psychology » Fall 2022 » Chapter 3 Part 1

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Question #1
If I am interested in how caffeine affects student test scores and I ask students to tell me how much caffeine they've had just before a test. What type of variable is caffeine in this case?
A.   Manipulated
B.     
C.   Measured
Question #2
If I were to randomly assign students in class to receive low, moderate, or high doses of caffeine, how many levels does this manipulated variable have?
A.   3
B.   2

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