PSYCH291 Lecture Notes - Lecture 20: Nonviolent Video Game, Internal Validity, Natural Disaster
16 Dec 2018
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Study of meditation for mental workers following hurricane katrina. Hypothesis: mindfulness meditation is effective in decreasing mental health workers" stress following a natural disaster. Attrition threat - when participants drop out of a study regression threat. Add a control group a pretest/posttest design (with a control condition) Examines effect of violent video games on aggression. Would there be any potential threats to internal validity? treatment group - plays mortal kombat. Could be any video game that causes threat to aggression. What are the independent variables? (within subject or between subject) One game is more violent than the other they did not do a good job at controlling for everything else other than aggression results (the "manipulation check ) Violent video game was rated significantly higher ( p < 0. 001) on violence than the nonviolent video game researchers have evidence that their manipulation of video game violence was appropriate results (self-report and physiological measures)
