Gentile, Lynch, Linder, and Walsh XXXXXXXXXXsurveyed over 600 eighth- and ninth-grade students asking about their gaming habits and other behaviors. Their results showed that the adolescents who...

Gentile, Lynch, Linder, and Walsh (2004) surveyed over 600 eighth- and ninth-grade students asking about their gaming habits and other behaviors. Their results showed that the adolescents who experienced more video game violence were also more hostile and had more frequent arguments with teachers. Is this an experimental or a nonexperimental study? Explain your answer.