Assignment Problem: Answer the following questions using your own words.
Question 1: What are some advantages and disadvantages in the use of a posttest-only control group design versus a pretest/posttest control group design? (Must identify at least one advantage and one disadvantage per design - so four total).
Question 2: What is a confound and how is it related to internal validity?
Question 3: What is the relationship between external validity and the college sophomore problem?
Question 4: On the most recent exam in your biology class, every student earned an A. The professor claims that he must really be a good teacher for all of the students to have done so well. Given the confounds discussed this week, what alternative explanation can you offer for this result? (Don't just lists a concern- briefly provide a justification).