Impulsiveness is a biggie trigger from my experience! Not able to control rage and also not able to forget and wanting to get back bigger style is a sign. They can sense vulnerable people and will use them for money, sex, general control them until no longer needed. A psycopath usually disappears but come back like a bad penny if they are deluded that vuln person is the cause of their life going wrong. The neurological part of the brain that deals with emotion has similar same as Aspergers. However imagine the person with AS is emotionally clumsy and the psychopath is emotional blind! Totally different reasons to why then they get it wrong! I think it is 50% nature genetic but 50% nurture. Having no proper bonding with the mother ie non eye contact has been noted within this disorder causing neurological changes for ASPD though for ASD it is different where the non eye contact starts when the regression happens. .i think their needs to be more research into early neuro development differences into ASPD.
I have noticed from Mumsnet a subgroup that where there is an ASD DC their is often a DF with ASPD similar behaviours of Domestic abuse/child abuse or neglect/ finanical abuse/affairs/abandoment/no care for the child/ violence if challenged for help with child disappears and starts new life.
I hope they find a gene and if they do early intervention to ensure the behaviours do not develop.
My ex interest in weapons, enjoyment of breaking chicken necks, revenge OTT style are all red flags. On Hares Psychopathic checklist he scored high even without me being so hard on him.
All I warn is dont rile or challenge this person! You wont win, you just get big and more aggressive actions in return and they decide when they want to stop! Unless the law prevents them ie restraining order prison etc
I learnt from my ex it was the eyes! They say you see the persons soul through their eyes, with my ex I saw sadness, emptiness and anger and the empathy was hollow and the charm false OTT!
One programme in US did say one genetic marker was higher in this profile. So they have spotted neurological differences in USA.
I guess if that does happen a genetic link is defo found society will become eventually more understanding to this is a neurogical disorder and differences in the brain like any other neurological condition ASD or Epilepsy or Cerabal Palsy etc etc
Trouble is hard to be sympathetic when on the end of their revenge wrath!
That sounds like another book I have a lot to learn from too re explain the last 8/10 years of my life! Thanks OP for flagging it up!