Another study regarding aggression in children was carried out by Stein and Friedrich (1973), who used a complicated naturalistic observation system to count several types of aggressive actions toward students in the nursery school. Researchers divided children into three groups: one group watched violent cartons such as Superman and Batman (aggressive …show more content…
All the factors other than the independent variable were controlled, therefore they could not contribute to differences among those groups (Sigelman & Rider, 2009). The experimenters also ensured that children in all conditions were studied in the same environment and treated similarly except the type of the program they watched. It showed that media involving aggressive models would cause children to become more aggressive. However, it was difficult for investigators to compare the results because some children might watch a lot of violent television whereas some might watch little. The cause-effect relationship of watching violent television caused increased aggression would be established difficultly (Sigelman & Rider, 2009). These factors might affect the accuracy of the