Question: One of the following experiments does not lend itself to a repeated-measures design using the same participants in every treatment. Figure out which one and explain why.
a. You want to design an experiment to find out the physiological effects of meditation. Your plan is to measure oxygen consumption 1 hour before meditation, during meditation, and 1 hour after a meditation session.
b. A friend, interested in the treatment of depression, wants to compare drug therapy, interpersonal therapy, cognitive-behavioral therapy, and a placebo drug using Beck Depression Inventory scores as a dependent variable.