Most people would sacrifice one person to save a group

Daily Mail - Science & tech 

You may think of psychopathy as an antisocial behaviour, but a new study suggests that people with these traits may actually be good for society. Researchers have found that while most people struggle to make moral decisions, psychopaths are more cut-throat about making pragmatic choices for the greater good. The findings show that, in certain circumstances, psychopathic traits could be considered beneficial. The researchers compared a questionnaire with actions in immersive moral dilemmas created using a robotic device that measures force, resistance, and speed, whilst simulating the action of harming a human. In several dilemmas, participants had to decide whether to sacrifice a person by performing a harmful action against them, in order to save a larger group of people.