Violent Online Games

what are some major or the biggest studies on violent video games?

im having trouble finding the biggest or just major studies on violent video games and the effect and im analyzing studies on this topic so im looking for studies that i can read online. thanks

http://findarticles.com/p/articles/mi_qn4188/is_20050818/ai_n14920469/?tag=content;col1

http://findarticles.com/p/articles/mi_hb5652/is_200411/ai_n23683587/?tag=content;col1

http://findarticles.com/p/articles/mi_qn4188/is_20061130/ai_n16909857/?tag=content;col1

http://findarticles.com/p/articles/mi_qn4188/is_20060108/ai_n15993439/?tag=content;col1

http://findarticles.com/p/articles/mi_hb4992/is_200701/ai_n19230261/?tag=content;col1

Violent gaming can affect your child