Saturday, May 22, 2010

Among types of research, only_____ can establish causality?

A. biased studies


B. representative surveys


C. random surveys


D. experiments

Among types of research, only_____ can establish causality?
it's d) experiments. I just took it on my Psych class. All of the other options would just be correlated.
Reply:I believe that the answer is D.

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