Justine Decides to Test the Effects of Playing Violent Video

Multiple Choice

Justine decides to test the effects of playing violent video games on aggressiveness in 10-year old boys. She decides to have all boys play the three different types of video games in a randomized counterbalanced order. The levels of the within-subjects independent variable are violent, exciting but not violent, and neither exciting nor violent. After playing each video game each child takes a test designed to measure their level of aggression. What is the appropriate type of statistical test for Justine to use?

A) one-way analysis of variance
B) two-way analysis of variance
C) one-way repeated measures analysis of variance
D) two-way mixed model analysis of variance