To make the experience between the control group and the experimental group as equivalent as possible in a formal experiment, both groups must receive some treatment or have something done to them in order to avoid the
A. manipulation check.
B. dependent variable.
C. placebo effect.
D. random sample.
Answer:C
To make the experience between the control group and the experimental group as equivalent as possible in a formal experiment, both groups must receive some treatment or have something done to them in order to avoid the
A. manipulation check. B. dependent variable. C. placebo effect. D. random sample.