The Following Paper disproves a lot the study says. It argues that recent "studies" on video game addiction are not based on facts but media hysteria. It is revealed that people overplay video games due to ineffective time management skills, or for other reasons. It's not because they are addicted to them.
I can tell you that video games can be addictive. But as addictive as Heroin? People on the forum discussed how the word "addiction" has been redefined. It used to mean "a dependence on a substance". Now it can mean compulsion's as well. It seems it has been redefined to attack video games. Many people on the forum discussed how during times when they had no PC they had no withdrawal symptoms from a lack of video games in their life. To me that proves that they are not as addictive as heroin.
If someone says crap that games are this addictive, its to start a moral panic people. It should not be trusted. Games aren't that addictive.