Homework SourseOne hundred volunteers who suffer from agoraphobia are avail
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.
1. What are the subjects in the experiment?
the 100 volunteers with agoraphobia
the imipramine drugs
the placebos
the psychiatrists
2. What is the factor in the experiment?
the 100 volunteers with agoraphobia
imipramine
the psychiatrists
the symptoms evaluated by the psychiatrists.
3. What are the treatments in the experiment?
the 100 volunteers with agoraphobia
imipramine and placebo
the psychiatrists
the symptoms evaluated by the psychiatrists
4. What is the response variable in the experiment?
the 100 volunteers with agoraphobia
imipramine
the psychiatrists
the symptoms evaluated by the psychiatrists
5. If neither the 100 volunteers nor the psychiatrists know which group the volunteers are in, then the experiment is
double-blind.
stratified.
a block design.
a matched pairs design.
6. 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.
| the 100 volunteers with agoraphobia | ||
| the imipramine drugs | ||
| the placebos | ||
| the psychiatrists |
Solution
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.
1. What are the subjects in the experiment?
the 100 volunteers with agoraphobia-answer
the imipramine drugs
the placebos
the psychiatrists
2. What is the factor in the experiment?
the 100 volunteers with agoraphobia
imipramine-answer
the psychiatrists
the symptoms evaluated by the psychiatrists.
3. What are the treatments in the experiment?
the 100 volunteers with agoraphobia
imipramine and placebo-answer
the psychiatrists
the symptoms evaluated by the psychiatrists
4. What is the response variable in the experiment?
the 100 volunteers with agoraphobia
imipramine
the psychiatrists
the symptoms evaluated by the psychiatrists-answer
5. If neither the 100 volunteers nor the psychiatrists know which group the volunteers are in, then the experiment is
double-blind-answer.
stratified.
a block design.
a matched pairs design.
6. 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--answer.
a matched pairs design.
| the 100 volunteers with agoraphobia-answer | ||
| the imipramine drugs | ||
| the placebos | ||
| the psychiatrists |
