A scientist wants to find out if there is empirical evidence for a relationship between caffeine and aggressive behaviour, She would:
Correct answer: B. Correlate news paper accounts and the types of beverages consumed
- A. Interview people to get their opinions
- B. Correlate news paper accounts and the types of beverages consumed
- C. test the idea by conducting an experiment
- D. research what other experts had thought
Explanation
Correlating records of beverage consumption with reports of aggressive behaviour can reveal whether the two variables are related empirically. An experiment would be required to establish that caffeine causes aggression, which the question does not ask.
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