psychopathy

Question 1

environmental factors

Answer 1

convicted parent, physically neglected, low involvement of father with boy

Question 2

head injuries?

Answer 2

prefrontal cortex and orbitofrontal cortex linked to deficient ability to make morally and socially acceptable decisions «acquired sociopathy»
damage to amygdala impairs ability of prefrontal cortex to interpret feedback from the limbic system which would result in violent and aggressive behaviour