Test Yourself
Take this quiz and see how you do. Select the correct answers by using the drop down menus. Once you are done, click submit to see your score! The ones that you get wrong will have a check!
1. Internal validity is important if you are to determine why people behave as they do
-- Choose an answer --
a. True
b. False
2. Simple experiments, when performed in laboratories under highly controlled conditions, allow researchers to keep all non-treatment variables constant, thereby allowing researchers to isolate the cause of an effect.
-- Choose an answer --
a. True
b. False
3. If you randomly assign participants to treatment or to no treatment , the treatment will be the only difference between your treatment group and your no treatment group.
-- Choose an answer --
a. True
b. False
4. Which of the following is an experimental hypothesis?
-- Choose an answer --
a. Athletes are more assertive than nonathletes
b. Hunger will make people more aggressive
5. Which of the following is a null hypothesis?
-- Choose an answer --
a. Men are more likely to vote for a Republican than women
b. Having people watch a political debate will not affect their views of the candidates
6. If you reject the null hypothesis in a study about the effects of watching political debates on attitude change, you would say that
-- Choose an answer --
a. The results are inconclusive
b. watching political debates causes attitude change
7. If you fail to reject the null hypothesis in a study about the effects of watching political debates on attitude change, you should that
-- Choose an answer --
a. The results are inconclusive
b. watching political debates has no effect on attitudes
8. In the experiment looking at the effects of full-spectrum light on mood, full-spectrum light is the experimental group
-- Choose an answer --
a. True
b. False
9. In the experiment looking at the effects of full-spectrum light on mood, mood is the
-- Choose an answer --
a. Control group
b. Dependent variable
10. The control group is the comparison group.
-- Choose an answer --
a. True
b. False
11. The treatment group and control group should be preexisting groups.
-- Choose an answer --
a. True
b. False
12. Because of the value of independence, you may have to test your participants individually.
-- Choose an answer --
a. True
b. False
13. Which of the following can be randomly assigned?
-- Choose an answer --
a. height of participant
b. height of participant relative to height of the other "participant" in the study
14. The best description of a statistically significant difference is a difference that is
-- Choose an answer --
a. Large
b. Reliable
15. A statistically significant difference indicates that the difference was important and in the predicted direction.
-- Choose an answer --
a. True
b. False
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