Memantine and Alzheimer’s disease. Some medical researchers suspect that the drug memantine improves the cognition of patients with moderate to severe Alzheimer’s disease. You have available 50 people with moderate to severe Alzheimer’s disease who are willing to serve as subjects.

98 CHAPTER 5 Experiments, Good and Bad

(a) Outline an appropriate design for the experiment, taking the placebo effect into account.

(b) The names of the subjects appear below. If you have access to statistical software, use it to carry out the randomization required by your design. Otherwise, use Table A, beginning at line 131, to do the randomization required by your design. List the subjects to whom you will give the drug.

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