Dr. Smith was surprised to discover that the control group scored higher on the tests than the experimental
(A) Did Dr. Smith’s design include a placebo?
(B) If so, what was the placebo?
(C) What term refers to the outcome of Dr. Smith’s study?
(D) Would it be correct to conclude that the procedure that was taught to the control group is a useful study strategy? If not, what is the correct conclusion?