Two new studies say that videogame addiction in kids may have serious consequences. Although most kids will never have a problem, those who do face an increased risk of depression, substance abuse, and lower grades in school. A study by an international research team found that 9 percent of Singapore kids were pathological videogame players. The researchers say this number is similar in countries around the world. A Yale School of Medicine study found only 5 percent of adolescents reported having symptoms of videogame addiction. However, these kids were more likely to smoke cigarettes, do drugs, and get in fights. Reading both studies requires a subscription but Science Daily has more info. You can read about the Singapore study here and the Yale study here.