There are a few reasons why the Internet, a tool of communication, has caused anti-social behavior. The first is video gaming. As discussed above, video games have an addictive nature. Knowing the addictive nature of video games, we can go one step further. Time spent on video games results in time lost socializing.
The more time a player spends alone on video games, the more that player is becoming isolated from the rest of the world. Basic social functions are forgotten, or have not been fine-tuned with experience. The video game player does not know how to handle social behavior. One cause of the anti-social disorder is even more time spent in front of video games. Another cause is isolation, aggressiveness, and disregard for rules and regulations. The initial addiction of video games has now become a psychological anti-social personality disorder.
Internet sites have even been established linking both video games and Internet addiction. One example is Internet Addiction Association. At this site one can find even more links to Doom and other related games. The game links on this site provide a large repertoire of game downloads, game cheats, and other related information about gaming and expanding. The game links brings me to my other point about anti-social behavior

http://people.hamilton.edu/bhouse/DoWeEncourage/DoWeEncourage5.html