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Chapter 10

PSYB01H3 Chapter Notes - Chapter 10: Repeated Measures Design, Factorial Experiment, Dependent And Independent Variables

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Anna Nagy

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Answers for Chapter 10 Questions on Complex Experimental Designs
1. In a study by Chaiken and Pliner (1987), research participants read an “eating diary”
of either a male or a female stimulus person. The information in the diary indicated
that the person ate either large meals or small meals. After reading this information,
participants rated the person’s femininity and masculinity.
a) Identify the design of this experiment.
b) How many conditions are in the experiment?
c) Identify the independent variable(s) and the dependent variable(s).
d)Is there a participant variable in this experiment? If so, identify it. If not, can you
suggest a participant variable that might be included?
2. Chaiken and Pliner reported the following mean femininity ratings (higher numbers
indicate greater femininity): male-small meals (2.02), male-large meals (2.05),
female-small meals (3.90), and female-large meals (2.82). Assume there are equal
numbers of participants in each condition.
a) Are there main effects?
b) Is there an interaction?
d) Describe the results in a brief paragraph.
4. Assume that you want 15 participants in each condition of your experiment that uses
a 3X3 factorial design. How many different participants do you need for a
a) completely independent groups assignment?
b) completely repeated measures assignment?
c) mixed factorial design with both independent groups assignment and
repeated measures variables?
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