Chapter 2.4, Problem 57E

The article “Placebos Are Getting More Effective. Drug Makers Are Desperate to Know Why.” (Wired Magazine, August 8, 2009) states that “according to research, the color of a tablet can boost the effectiveness even of genuine meds—or help convince a patient that a placebo is a potent remedy.” Describe how you would design an experiment to investigate if adding color to Tylenol tablets would result in greater perceived pain relief. Be sure to address how you would select subjects, how you would measure pain relief, what colors you would use, and whether or not you would include a control group in your experiment.