Practice Quiz

Chapter 10
Complex Experimental Designs

Here are some questions for a practice quiz. The questions are multiple-choice and true-false. They may not resemble the questions that your instructor may ask on a test. That is, the questions on your class exams may be more difficult and may include essay and short answer questions.

When you get your score, you will be shown the correct answers. Take the quiz as many times as you like.

1. If you predict a curvilinear relationship, you must have at least three levels of the independent variable in your experiment.
True
False

2. A researcher studied the effect of defendant gender (male-female) and type of crime (robbery-embezzlement) on juror decisions. How many conditions are in this study?
two.
three
four

3. If a study has two or more independent variables, it is called a factorial design.
True
False

4. Participants gave longer sentences for embezzlement than robbery, irrespective of gender. This implies that there was a:
main effect of gender.
main effect of type of crime.
interaction.

5. In the IV X SV design, one of the independent variables is a characteristic of participants such as personality type.
True
False

6. In a mixed factorial design, one of the independent variables is a characteristic of participants such as personality type.
True
False

7. A researcher interested in attitude change designed an experiment that examined the effect of age (18-25 years of age, 35-50, and over 60) and type of media (newspaper, radio, television) on attitude toward a tax increase for local schools. In a completely independent groups design with 20 participants per condition, the researcher needs to study ______ people.
60
120
180

8. The effect of motivation depended on whether there was a clear standard for excellence. This sentence implies that there was a(n):
main effect of motivation
main effect of standard
interaction effect

9. A main effect is the effect of one independent variable averaged over the other independent variables.
True
False

10. Dr. Fox studied the effect of attractiveness on juror decisions. Dr. Ramirez studied the effect of type of crime on juror decisions. What would be gained by studying both independent variables in one experiment?
main effects
interaction
curvilinear relationship

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