Researchers wish to determine if a new experimental medication will reduce the symptoms of allergy sufferers without the side-effect of drowsiness. To investigate this question, the researchers give the new medication to 50 adult volunteers who suffer from allergies. Forty-four of these volunteers report a significant reduction in their allergy symptoms without any drowsiness.
This is an example of
A. the establishing of a causal relationship.
B. a block design.
C. a randomized study.
D. a double blind experiment.
E. None of the above.
I think it's A, is it correct?
No, it is not option A. The scenario described here is not an example of the establishing of a causal relationship. It is an example of a study design.
The correct answer is C. a randomized study.
A randomized study is a type of study where subjects are randomly assigned to different groups or treatments. In this case, the researchers randomly assigned the 50 adult volunteers to receive the new medication. This helps to ensure that any observed effects are not due to other factors but are indeed caused by the medication itself.
Option B, a block design, refers to a type of study design where participants are first divided into groups based on certain criteria (blocks) and then randomly assigned to different treatments within those blocks. This scenario does not mention any blocks being used, so it is not an example of a block design.
Option D, a double-blind experiment, refers to a study design where both the participants and the researchers conducting the study are unaware of which participants are in the control group and which are in the experimental group. This scenario does not mention anything about blinding the participants or the researchers, so it is not an example of a double-blind experiment.
Therefore, the correct answer is C. a randomized study.