Which of the following represents a blind study?

A. The test group does not know whether they are receiving a placebo or the actual treatment, but the researchers do.
B. Neither the test group nor the researchers know whether the test group is receiving a placebo or the actual treatment until all the data are collected.
C. The test group knows whether they are receiving a placebo or the actual treatment, but the researchers do not know until all the data are collected.
D. The test group knows whether they are receiving a placebo or the actual treatment, and so do the researchers.


Answer: A

Biology & Microbiology

You might also like to view...

The most common survival trisomy is trisomy 13. Indicate whether the statement is true or false

Biology & Microbiology

A(n) interoceptor is located within a body organ. Indicate whether the statement is true or false

Biology & Microbiology

In the classic study by Harris et al. (1933), when thiamine-deficient rats were offered 10 new diets, only one of which contained the badly needed thiamine...

(a) all of them developed an immediate preference for the thiamine-rich diet (b) almost all of them learned to eat the thiamine-rich diet and avoid the deficient diets (c) they were equally likely to eat each of the 10 new diets (d) few developed a preference for the thiamine-rich diet

Biology & Microbiology

Figure 24.9 In the accompanying figure, an asexually reproducing individual is indicated by _____.

A. 1 B. 2 C. 3 D. 4 E. 5

Biology & Microbiology