A Researcher Is Studying the Effects of Film Violence on Aggressive

Multiple Choice

A researcher is studying the effects of film violence on aggressive behavior in males. She randomly assigns 100 males to Group A, who watch several short, violent films and 100 males to Group B, who watch several short films of toddlers playing quietly. She then observes them for a period of time and rates their behavior for aggressiveness. She then decides to divide the data according to the age of the subjects (males over 30 and males under 30) so that she can compare the treatment effects on younger and older age males. Which group is the experimental group?

A) Group B
B) all the older males (over 30)
C) all the younger males (under 30)
D) Group A