Question

In a clinical trial for a new headache medication, participants are randomly assigned to a treatment group or a placebo group. They do not know whether they are receiving the medication or a placebo. The element of experiment design being used is _____.
blinding
randomization
replication

Answer 1

Answer: blinding

Step-by-step explanation:

• An experimental study in which the experimenter know the experimental procedure but not the participants are in the test groups during the the experiment is known as single blind.

Given: In a clinical trial for a new headache medication, participants are randomly assigned to a treatment group or a placebo group.

They do not know whether they are receiving the medication or a placebo.

⇒ The element of experiment design being used is single blind experiment or blinding.

Answer 2

Single blind experiment