U.K. researchers surveyed 5,000 10- to 15-year-olds and found that those who spent an hour or less each day playing video games were better adjusted and were less prone to behavioral problems than peers who did not play at all. However, these positive effects appeared to diminish when gaming time reached three or more hours each day, according to the study in the journal Pediatrics. Other experts reacting to the study said that parents still need to keep a close eye on what their children are playing and to also play the games with them to see what’s really involved.