A new study to be released in the February issue of Pediatrics conducted by Developmental Psychologist Dr. Douglas Gentile links video game addiction with mental health issues. The study looked at 3-thousand 4th, 5th, 7th and 8th grade children and determined that 9 percent had "pathological gaming" problems. Such problems, the study found, were linked to certain mental health issues including depression, anxiety and poor grades.

So, who's at risk? The results of the study show that children who are more socially awkward, with a high tendency toward impulsive behavior and who play a greater amount of video games were more at risk of becoming addicted to video games. And, those who were addicted were more likely to develop issues such as depression, anxiety and poor grades. Critics of  Dr. Gentile's study  say it was poorly designed, citing flawed methodology.

This study comes in the wake of the tragedy in Tucson, where alleged gunman Jared Loughner gunned down Congresswoman Gabrielle Giffords and bystanders at Giffords' constituent event, killing six. Loughner is said to have posted violent and disturbing comments on internet gaming sites. CNN's Senior Medical Correspondent Elizabeth Cohen talks to Kiran Chetry about the new study's findings.