Imagine that you were a participant in an experiment where you were asked to eat cookies and rate how much you liked each cookie on a scale from 1 to 5, where higher ratings mean higher liking of the cookie. You are asked to eat an Oreo cookie and rate it and then eat a Chips Ahoy cookie and rate it. For this experiment, answer the questions below.
1. What is the independent variable (IV)? What are the levels of the IV?
2. Was the IV manipulated between-subjects or within-subjects? How do you know?
3. What is the dependent variable (DV)? What operational definition was used in this experiment?
4. What scale of measurement was used for the DV?
5. The IV was bivalent. Explain how you can make it multivalent.
7. Do you think the cookie experiment has more internal validity or external validity? Explain your answer.
