In class on Friday we conducted a Coke vs. Pepsi taste test experiment. The research question was “Can people tell the difference between Coke and Pepsi?” Based on the data we collected in class, we determined the answer to the question was no because 3 of the 4 people only got 2-3 guesses correct out of 5 trials. For this bonus blog post, critique the design of the experiment as we conducted it in class. The bonus post will be worth up to 2 extra credit points depending on the quality of your answers (make sure to use the terminology from the chapter whenever possible) and must be posted by the beginning of class on Monday 9/11 with the tag “Bonus Posts” to earn credit. You must use answer the following questions as part of your critique:

• What were the strengths of the research design?
• What were the limitations of the research design?
• What potential confounding variables were present in the study?
• Was the conclusion we drew valid? Why or why not?
• What are 5 specific changes you would make to the research design to improve the study?

Header image: CC by Flickr user Caitlinator