There are other, new forms of violence to which children and adolescents are exposed. In one recent study, it was demonstrated that 15% of music videos contain interpersonal violence. Still another new source of violent exposure is access to the Internet and video games. There is little data on the incidence of violence on the Internet; however, there is concern about sites that may advocate violence, provide information on the creation of explosive devices, or reveal how to acquire firearms. There is also little research on the impact of violent video games. We do know, however, that they are extensive and have a role-modeling capacity. The fact that the child gets to act out the violence, rather than to be a passive observer, as when viewing television or movies, is especially concerning to experts.