In order to study the effects of watching violent programs on children's aggressiveness, a researcher observes children's behavior after they watch 30 minutes of violent programs on television. The researcher concludes that television violence causes aggressiveness. A problem in this research is that:
A)there is no control group.
B)the children's behavior is not observable.
C)the researcher should have had the children watch at least 60 minutes of violent programs on television.
D)there is no independent variable.

Question

Quizplus · Accepted Answer

The absence of a control group makes it impossible to determine whether the children's aggressiveness was caused by the television violence or another variable.

In Order to Study the Effects of Watching Violent Programs