True Jimi
I read a article a while ago prisoners participated in a study, Oxycontin was given to a 'normal' group, and a group of suspected psychopaths the question was:
Would giving Oxycontin (the love hormone) to a psychopath cure them?
The brains were scanned and it was found that there was extra activity around the Amygdala in the normal subjects as the Oxycontin was absorbed. There was no such activity in the psychopaths, the conclusion was that doses of Oxycontin will not cure psychopaths as they do not have the neurons to facilitate the uptake of Oxycontin. Wired differently.
Therefore psychopaths do not/can not love or feel empathy.