Oona is a researcher who studies how playing video games is related to long-term physical health. She believes that people who play more video games are less healthy. She proposes a correlational study to examine this belief. Describe the predicted relationship between the variables of this study.

• Explain why random selection would or would not be important to this study.
• Provide a valid operational definition of "physical health" in this study.
• Provide a specific example of how the "third variable problem" could affect this study.
• Explain why an experimental version of this study might not be ethical.
• Explain how vicarious reinforcement might relate to someone playing a video game.