The writer of the article, Joseph Lee, points out that psychopaths have a number of distinguishing traits, the main ones being
1) A childhood history of antisocial behaviour and a desire to manipulate others for their own gratification and benefit.
2) A complete inability to feel empathy with others, as well as any other feelings we might characterise as ‘caring’, ‘loving’, ‘kind’, ‘generous’, etc.
3) Very shallow emotions, and a complete disregard for the feelings of others.
4) A complete inability to feel guilt, and a need to blame others for every harmful aspect of their behaviour. Genuine remorse is also an impossibility.