Question

When human subjects are used during drug tests, researchers usually perform double-blind experiments. In double-blind experiments, neither the researchers nor the human subjects know which subjects are receiving the actual drug (experimental group) and which are instead receiving an inactive placebo (control group).

Double-blind experiments are conducted in order to

reduce sources of bias.
decrease the accuracy of the data.
reduce measurement errors.
improve the precision of the data.

Answer 1

What do you think it is? :)

Answer 2

@Starr_Dynasty , do you have any ideas? :)

Answer 3

D

Answer 4

Not quite :). Okay, so obviously it wouldn't be B. Read the paragraph again. What effect would neither of the people knowing what they were getting have on the experiment?

Answer 5

or maybe C dont know just yet

Answer 6

oh wait no its A completely A

Answer 7

If the people that were receiving the treatment knew they were getting real medication, they would assume they were getting real meds, their mind would tell them that it was making them better. If they knew they were getting fake meds, they would think that it wasn't working. So why should they not know what kind they're getting?

Answer 8

A is right :)