A double-blind experiment of an allergy medication is being tested on 100 participants according to this diagram: If Group 2 receives a full dose of the medication,what should Group 1's treatment consist of?
A)Blocked doses
B)A 50% dose
C)Stratified doses
D)A placebo
E)Randomized doses

Question

A double-blind experiment of an allergy medication is being tested on 100 participants according to this diagram:  If Group 2 receives a full dose of the medication,what should Group 1's treatment consist of?
A)Blocked doses 
B)A 50% dose 
C)Stratified doses 
D)A placebo 
E)Randomized doses

Quizplus · Accepted Answer

Since this is a double-blind experiment, both the participants and the researchers are unaware of who is receiving the medication and who is receiving a placebo. In order to compare the effects of the medication to the placebo, Group 1 should receive a placebo instead of an actual dose of the medication. Therefore, the best choice for Group 1's treatment is a placebo.

A Double-Blind Experiment of an Allergy Medication Is Being Tested