Question

The results of jasper's study for his dissertation showed that 200 mg of experimental drug r had a minimal-to-modest effect in reducing the symptoms of generalized anxiety disorder (gad). he decided to revise his original hypothesis by increasing the dosage needed to reduce gad symptoms by 25 percent to 300 mg. this increase in drug r is a manipulation of the _____ variable.

Answer 1

The increase in drug r is a manipulation of the independent variable. The dependent variables here are the changes produced by the drug in the symptoms of GAD.