Research, Article - violent games influence aggression (Against)

The article gives valid evidence that violent computing gaming has no correlation to aggression.  It suggests that  "researchers found that the playing of such games actually had a very slight calming effect on youths with attention deficit symptoms and helped to reduce their aggressive and bullying behavior" 
this goes against the notion that violent games have an affect on aggression.

http://www.springer.com/about+springer/media/springer+select?SGWID=0-11001-6-1433942-0