A researcher shows a violent film to one group of participants and a nonviolent film to another before giving both groups a test measuring aggressiveness. Which statement is true about this experiment??
a. ? The participants who are shown the violent film are the control group.
b. ?The type of film shown is the independent variable.
c. ?The nonviolent film is likely to produce a placebo effect.
d. ?The violent film is a confounding variable.
ANSWER:
b
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