A researcher is interested in whether playing violent video games causes children to be more aggressive. So she finds a sample of children who regularly play violent video games and a sample of children who do not play violent video games. Then she compares their levels of aggression. Explain the weakness of this study in terms of her original research question.

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ANSWER The weakness of this study lies in its inability to establish a causal relationship between playing violent video games and increased aggressio... View the full answer