Sunday, December 4, 2011

Is this a correlational or causation relationship?

"Researchers propose that lavender essential oil has an effect on test anxiety"





I have to draw a variable flow chart to show this relationship, however I am unsure weather to make the arrows go both ways (correlational) or only point to the right (causal).





The IV is the inhalation of essential lavender oil, and the DV is the test anxiety.|||Correlational. Lavender essential oil has an effect on test anxiety, but lavender does not CAUSE test anxiety.

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