In order to determine whether children who have just watched cartoons will perform better on cognitive tasks than children who have not just watched cartoons, researchers randomly divided 60 preschoolers into two groups. For nine minutes, one group watched a rapid-paced cartoon, while the other group did not watch anything and did a quiet activity. They then administered standardized tests to determine the immediate impact of the children’s previous nine minutes of activity.

Fast paced cartoons cause stress for the children and they cannot focus on the tasks.

Explanation:

Children that watched fast paced cartoons did worse than those that didn't watch any or that watched an educational program.

Scientists believe that cartoons that are face paced are stressful and is an unnatural pace and stimulation for the children. The child does not recover from this stress in time and are unable to focus on the tasks that are at hand.

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this question does't support enough resioning to answer.