Violence on broadcast and cable television might not be all that different.

A new study by the Parents Television Council showed that violence on broadcast and cable TV shows are more similar than they are different. And many broadcast TV shows are underrating their shows for graphic content, as some broadcast shows that are rated for 14-year-olds are similar to those rated for mature audiences on cable channels.

“The most violent shows on broadcast TV have essentially similar levels of violence as the most violent cable TV shows, rendering untrue the popular assumption that broadcast TV is a ‘safer’ media environment for children,” the PTC said.

The study also found that viewers "are exposed to guns or bladed weapons every three minutes,” PTC said. And “the TV ratings system is failing to protect children and families due to the fact that the broadcast networks are assigning a younger age rating than similarly violent programs on cable.”

Read the full study and its major findings on