This percentage indicates that psychopathic traits are due more to DNA than to upbringing.Recent genetic studies of twins indicate that identical twins may not be as genetically similar as hitherto assumed.
A biography of Charles states that his mother didn’t want anything to do with him so he lived on the streets committing minor crimes (“Charles Manson Biography”).
The Minnesota Twin Study is a project originally led by Minnesota Professor of Psychology Thomas Joseph Bouchard, Jr.
The Minnesota twin study has shown that psychopathy is 60 percent heritable.
I didn't know what underlay social interactions." "I don't feel guilty for anything.
I feel sorry for people who feel guilt." “I'm as cold a motherfucker as you've ever put your fucking eyes on.