This Lancet article with N=1037 indicates clear, morphological differences in bullies' brains.
Those Eugenics idiots, much like a stopped mechanical clock that tells time correctly two seconds each day, were on to something.". . . 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."










