Born to be bad? Genetic research says maybe

If some children seem like they were born to be bad, new research suggests it may be true.

In a study of adult twins and their children, researchers found that genes, rather than parents' own argumentative behavior, seemed key in the children's odds of serious conduct problems — like bullying, skipping school and shoplifting.

The findings, published in the journal Child Development, touch on the classic nature-versus-nurture question.