What " makes " a psychopath ? From Hannibal Lecter to Patrick Bateman , pop finish often enjoys severalise the “ origin report ” of these inhuman - hearted , emotionless psychopaths . But is there any truth behind these sensational depictions ?

Aina Gullhaugen and her team from the Norwegian University of Science and Technology carry out a meta - analytic thinking bailiwick , published in theInternational Journal of Offender Therapy and Comparative Criminologyin 2011,of all the inquiry published over the retiring 30 years that looked at psychopathologic offender in criminal institutions . Gullhaugen has previously bear out her own studies into psychopath within Norwegian high - security system prisons .

Her analytic thinking has polemically challenged some of the long - held assumptions about psychopathy . It also cajole out two delineate experience that are common among psychopaths , both   of which involve their parents and bringing up .

" Without exception , these people have been wound in the troupe of their caregivers , " Gullhaugen say in astatement in 2012 . " And many of the descriptions made it clear-cut that their previous mercilessness was an attempt to address this damage , but in an inappropriate or bad mode . "

On top of physical ill-usage from a parental figure , many shared another experience:”More than one-half of the sociopath I have studied reported that they had been exposed to a parenting style that could be come in on either extreme of these scale . Either they lived in a billet where no one cared , where the child is subject to full controller and must be submissive , or the child has been subjugate to a neglectful parenting style . "

This could “ show that these shaver feel pass up . To a much neat level than in the general universe , their parents have an authoritarian trend that compromises the minor ’s own will and independence , "   the researcher say . " This is something that can stimulate the psychopath to later play ruthlessly to others , more or less consciously to get what he or she needs . "

Her   hypothesis advise that psychopathy is not just a topic of nature , but also of rearing .

" The combination of the individual ’s biological foundation , temperament , personality , and exposure are important components , " enjoin Gullhaugen . “Of course , not all reckless conduct is explain by a sorry upbringing , but we do not inherit everything either . That is my main point . "

" When we accredit that the psychopath ’s upbringing and relationships are of import , and that the psychopath ’s emotional spirit is more complex than what we have previously believed , we shrink the branding of these soul , " she close . " Meanwhile , we also have a start detail for treatment . "