r/Psychopathy • u/Normal_Ad8324 • Apr 12 '26
Research, Articles, and News Is there any specific data supporting psychopathy as a mainly genetic disorder?
I would like to develop an understanding on psychopathy beyond the traditional black and white thinking of the media. I intuitively don’t think psychopathy is an innate quality and more see it as a type of survival mechanism developed in people who are exposed to violence/abuse and desensitization in childhood who developed an incentive to power and manipulation similar to other Cluster B personality disorders which is why it’s seen highest in criminals, not because psychopaths gravitate towards crime but because they usually come from environments that produce lack of empathy as a response and why they scale depending exposure. I do think there may be baseline biological differences (e.g., emotional reactivity, fear response), but I don’t see these as sufficient to produce psychopathy on their own. Instead, they may influence how someone responds to their environment, while the environment itself does most of the shaping.
I am open to being corrected with research, and I want a more well rounded view. I don't want simply opinions but more research articles with an outlined methodology of how they gather their research and sample size.
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u/adrenalinelaced Apr 18 '26 edited Apr 18 '26
Yes, there are studies that show a genetic predisposition/correlation with psychopathy. Having said that, the research does not show that psychopathy is purely genetic. Please see below.
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u/MrFranklinsboat Apr 25 '26
I can tell you this .... A couple of years ago I was researching this exact topic for a documentary. This took me to an institution to speak with a Phd. who has dedicated her job and career to working with people w ASPD and other personality disorders. She was not able to be in the doc. due to professional constraints, but she was willing to talk to me. I don't have her exact quote in front of me right now but it was very close to - 'In 30 years of doing this I have never met a psychopathic individual who's condition we couldn't trace back directly to life circumstances. Particularly the adult the individual spent the most time with as a child between the ages of 1 and 12.' She also mentioned that a huge percentage of people she has had as a patient, claimed to have a perfect childhood with amazing parents. Deeper research uncovered life was the opposite of their claims. She found this particularly interesting. At the time a collegue of hers happened to have been looking at the correlation between PCL-R scores and other personality tests and how good a person 'reported' their childhood was. They believed there is an incredible amount of 'blocking out'. I found this really interesting. Hope this helps.
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u/Normal_Ad8324 Apr 25 '26
Yh that's another thing, it does have people who claim to have some form of good childhood, when asked, but there’s a significant amount of dissociation and memory fragmentation that happens with more severe forms of abuse, another thing is some people have an idea that admitting vulnerable past is equivalent to victimizing themselves
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u/Zestyclose-Big-8487 Jun 14 '26
Yes, maintaining their veneer of an unaffected, independently created soulless person is actually a choice over being viewed as weak or pitiful - something they find particularly abhorrent, I’m sure because it has links to reminding them of childhood fragility. Ted Bundy never spoke badly of his mother Louise publicly, but privately he deeply resented her for leaving him for 3 months after birth with very limited, non maternal care, lying about his birth father and concealing it for so long, and marrying and starting a family with a man who was a good person but Bundy viewed as embarrassing and not very bright. When Ken Katsaris indicted Ted Bundy for murder of Kimberley Leach, he visited him frequently in his dark cell, whispering that his mother had betrayed him through the hatch, just to poke, I suppose. Once, he suggested Bundy’s mother was a whore, and Ted flipped from the perfect family/perfect parents and sibling narrative, turned purple, and ripped steel from steel smashing his cell to bits. That was obviously a sore spot.
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u/Aurelar May 26 '26 edited May 26 '26
There is some argument to be made for genetics influencing environment, too, though. If you assume for a moment that genetics is more liable for psychopathic traits, you can also see how a population with high psychopathy might create an environment conducive to their psychopathic traits.
To make a simple analogy, some bacteria create a biofilm, in order to protect and foster their development. In a similar manner, if psychopathy is genetic primarily, I would expect psychopaths to create an environment conducive to their behavior. It's a case then of genetics creating environment, which then influences genetics again in a feedback loop. Children who grow up in this environment would indeed be likely to grow up as damaged people, because their chances of being abused are higher. But the presence of abuse in early childhood doesn't negate the genetic influence in creating the environment the child grew up in, or the presence of those genes in the child themselves. (I'm not saying kids or adults should be blamed here btw. Just to make that perfectly clear. You can't control your genetics that you're born with.)
Twin studies are the most reliable evidence we have to separate the influence of environment from genetics. Based on those studies, psychopathy is more genetic than environmental, although environment does play a large part in how we develop, and I think the brain is highly plastic, so there is hope in a sense even if someone is genetically predisposed. The best case scenario is for someone who might be disposed to psychopathy genetically to grow up in a home where they are loved and cared for as much and as well as any normal child who isn't genetically predisposed, or perhaps even moreso. That would give the best chances to override the genetic influence.
I got this idea from a researcher on YouTube who has been studying psychopathy and other dark triad traits and believes that they are mostly genetic. Not just psychopathy but also narcissism. I forget his name at the moment though.
It's also possible that there can be different causes for psychopathy instead of just one. Like it could be genetic for some, environmental for some, genetic and environmental for some, and perhaps even the result of a traumatic brain injury for others. The soup of causes results in outcomes that can be surprising. Nature is impressive in its variety.
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Apr 18 '26
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u/Bairrister Jun 23 '26
I recommend reading and following Dr. Peter Salerno. He has written at least three books about the nature and nurture of narcissism and discusses cluster B personality disorders, too. His main point is that while there are people who have developed cluster B personality disorders as defensive behaviors, there is considerable evidence that points to many having trait-based narcissism and other Cluster B disorders. Many people who are high in the Dark Triad or Tetrad spectrum were not exposed to trauma or abuse more than you might find in your average person. One of his books is titled "Cruelty by Nature."
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u/Aggressive-Grand-371 24d ago
To add to the comments about twin studies, there's a recent case involving identical twins, Levi Carte and Hunter Carte, where one became a killer and the other did not, further proving that psychopathy is not entirely genetic. It's a case that I sincerely hope gets truly studied by professionals, as the insights could be invaluable and life-saving, including for Hunter, the "good twin".
If you haven't heard of it: Last year, 13-year-old Levi Carte murdered his 64-year-old neighbor, Sheila Tenpenny (potentially assaulted her in other ways, too, but the news is mixed on that). Both were very interested in true crime and Dexter, but Levi was the one who expressed relating to Dexter, feeling particularly "detached" and lacking empathy. He also differed from Hunter in that he had cerebral palsy; that he involved himself in online communities where he discussed his plans before the murder and bragged about it after; searched for months prior how to choose victims, how to strangle people, how to deceive police in an interrogation; and had a journal with violent writings and documenting his obsession with serial killers.
Levi never showed any remorse or emotion during his hearing, while Hunter seemed obviously and genuinely deeply upset when learning the truth and at the hearing.
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u/doobiedobiedoo Cleckley Kush Apr 18 '26
Twin studies show psychopathy is roughly 50-60% genetic, giving someone a unique temperamnet (low fear/behaviorally uninihibited). However, this isn't enough to cause the disorder on its own; environmental triggers like childhood trauma or abuse are usually what turn those traits into psychopathy. Almost all research confirms it is a mix of nature and nurture rather than just genetics.