Preschoolers learn how to be mean from children’s television.
Researchers from the US examined how children interacted in classrooms and playgrounds at day care centres, as well as reports from parents and teachers.
They found children who spent more time watching “educational programs” displayed more aggressive behaviour than those who watched less television.
Researchers say this doesn’t mean parents should ban their children from the television. Rather, television should be limited and parents should be more involved when their children are exposed to it.