A possible candidate for this abnormality has recently been identified in a study at the University of Wisconsin, Madison. If psychopathy is genetically determined, one should expect some abnormality in the brain, the immediate source of psychopathic traits. This leaves open the possibility that psychopathic traits are largely genetically determined. Though only a couple of hundred mutations take place during early fetal development, the mutations likely multiply over the years, leading to vast genetic differences. Recent genetic studies of twins indicate that identical twins may not be as genetically similar as hitherto assumed. This percentage indicates that psychopathic traits are due more to DNA than to upbringing. The Minnesota twin study has shown that psychopathy is 60 percent heritable. The Minnesota Twin Study is a project originally led by Minnesota Professor of Psychology Thomas Joseph Bouchard, Jr. One of the best sources of information about whether traits are a result or nature of nurture comes from the Minnesota Study of Twins Reared Apart. We don’t even have a satisfactory answer to the question of whether psychopathy is a product of Mother Nature or a feature of upbringing. The causes of psychopathy remain a mystery. These creepy Ted Bundy quotes patently summarize the main traits of a psychopath: A callous, exploitive individual with blunted emotions, impulsive inclinations, and an inability to feel guilt or remorse.
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