Unformatted text preview: corresponded to the observed improvement of class behavior. There wasn’t a significant reduction in physical aggression; therefore this finding was not significant. 3. One threat to the internal validity of this study is mortality because 6 participants dropped out of the study. Another threat could possibly be history because any event could have occurred between the repeated measurements....
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- Spring '11
- Psychology, verbal aggression, Joel Diaz, Family Conflict Resolution