Bullies' brains are physically smaller

This Lancet article with N=1037 indicates clear, morphological differences in bullies' brains.

". . . for the small proportion of individuals with life-course-persistent antisocial behaviour, there may be differences in their brain structure that make it difficult for them to develop social skills that prevent them from engaging in antisocial behavior."

Those Eugenics idiots, much like a stopped mechanical clock that tells time correctly two seconds each day, were on to something.