Chapter 1.3, Problem 7E

Does It Make Sense? For Exercises 5–8, determine whether the statement makes sense (or is clearly true) or does not make sense (or is clearly false). Explain clearly; not all of these have definitive answers, so your explanation is more important than your chosen answer.

7. Treating Depression. A psychologist suspects that breathing exercises can help people with depression. To decide whether he is correct, he identifies a group of subjects, watches them do the breathing exercises, and then asks them how they feel afterward.