One hundred volunteers who suffer from agoraphobia are available for a study. Fi

Question

One hundred volunteers who suffer from agoraphobia are available for a study. Fifty are selected at random and are given the drug imipramine, which is believed to be effective in treating agoraphobia. The other 50 are given a placebo. Psychiatrists evaluate the agoraphobia symptoms of all volunteers after two months to determine if there has been substantial improvement in the severity of the symptoms.

Suppose the 100 volunteers were first divided into men and women. Half the men and half the women are given imipramine. The remaining men and women are given a placebo. This would be an example of

replication.

confounding.

a block design.

a matched pairs design.

replication.

confounding.

a block design.

a matched pairs design.

Explanation / Answer

a matched pairs design. is the answer

As 100 volunteers are separated into two equal groups this form a matched pairs design.

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