There seems to be some evidence that people who are highly psychopathic do have underlying physiological differences which give rise to reduced empathy: https:/

There seems to be some evidence that people who are highly psychopathic do have underlying physiological differences which give rise to reduced empathy: https://www.sciencedaily.com/releases/2009/08/090804090946.htm https://www.sciencedaily.com/releases/2009/08/090804090946.h... I think we all have the ability to not feel another's pain. For instance, dehumanization is a classic technique in war propaganda.