For each of the following independent variables:

1. How would we design an experiment using an independent groups design?
2. How would we design an experiment using a repeated measures design (don't forget about order effects!)?
3. Do we think one type of design is more appropriate than the other and why?
4. Is there another IV that could be of interest that we could add to the experiment to examine interaction effects?

a)Listening to a lecture from a friendly teacher vs. a stern teacher.

b)Practicing the guitar for 30 or 60 minutes per day.

c)Drinking sweetened, artificially sweetened, or unsweetened iced tea.

d)Exercising alone, in a group, or restricting calories.