Two variables may be said to be causally related if:
Correct answer: B. all extraneous variables are controlled and the independent variable creates consistent differences in behavior of the experimental group
- A. they show a strong positive correlation
- B. all extraneous variables are controlled and the independent variable creates consistent differences in behavior of the experimental group
- C. they are observed to co-vary on many separate occasions
- D. they have been observed in a laboratory settingBook Online Therapy
Explanation
Causation requires more than correlation: the independent variable must produce consistent differences while alternative explanations are controlled. This is the logic of a controlled experiment.
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