Murderers and other violent criminals have been shown to have amygdalae that are smaller or that don’t function properly, explains Stone. One recent study concluded that individuals who exhibit a marker of “limbic neural maldevelopment” have “significantly higher levels of antisocial personality, psychopathy, arrests and convictions compared with controls.”

Murderers and other violent criminals have been shown to have amygdalae that are smaller or that don’t function properly, explains Stone.  One recent study concluded that individuals who exhibit a marker of “limbic neural maldevelopment” have “significantly higher levels of antisocial personality, psychopathy, arrests and convictions compared with controls.”