What makes someone a sociopath?

Antisocial. The modern clinical term for sociopathy is antisocial personality disorder. The hallmark of this disorder is the person seems to have no conscience, or sense of morality, or right or wrong. This person cannot empathize with others, is opportunistic, predatory, and often thrill seeking. An example of this would be Charles Manson.
Antisocial. Sociopathy can result in young adults with history of conduct disorder who have early history of oppositional defiant disorder who at earlier age had attention deficit disorder that was not treated. No studies confirm inheritance as a cause. Is more common in males.