Do you think that video games encourage youth to use aggression?

Since its beginnings in 1970s, the video game industry has experienced tremendous growth. This explosion of the video game industry has had many people questioning the detrimental effects of video games. The main concern is with the violence within these games.

Thus, do you think that video games encourage youth to use aggression? Do you think that besides the concern over negative effects, video games have positive effects on development?