A researcher wants to find if the behavior of children is affected by playing video games that have violent content. He asks the parents of 100 children in a day care center how often each child plays video games and whether the video games they play have violent content. The children are then allowed to play in a controlled environment, such as the day care center's playground. Any violent behaviors are then noted.

What type of study is the researcher conducted?

Group of answer choices

Observational Study

Experiment

Census