Do you have stats for this?
"Researching some of the most notorious serial killers ever known, they all show distinct patterns of childhood abuse and early trauma"
"serial killer Aileen Wuornos had a childhood filled with abuse and emotional neglect. "
Edmund Kemper: "his parents divorced when he was 9-years-old and his alcoholic mother blamed him for the divorce. She was overly critical of her son and forced him to live in the basement of the house"
Donald "Pee Wee" Gaskins: "His childhood was one of abuse and neglect. His mother would have many boyfriends throughout his childhood and they would subject him to beatings"
Boston Strangler: "his father Frank DeSalvo was a violent alcoholic who once knocked out of Albert's mother's teeth and bent her fingers back until they broke."
Richard "The Night Stalker" Ramirez: "His father was also evil, subjecting Ramirez and his six siblings to vicious beatings."
Anthony Sowell "Cleveland Strangler": "One psychologist revealed that obsessive-compulsive disorder and a traumatic childhood was what drove Sowell to kill. His mother's sister died, so she took into the family home seven nieces and would punish the children with regular violent beatings. "
Rose West and her husband Fred West were two of the most evil serial killer couples in England. "Rose herself had a tough childhood; her mother had electro-convulsive therapy following a struggle with depression, and her father suffered from paranoid schizophrenia, which made him prone to violent attacks"
Henry Lee Lucas and Ottis Toole were close friends, turned lovers, then serial killers as they drifted around the U.S. together on their crime spree. Exactly how many people they killed between them is unknown, although it's believed to be hundreds "The two had similar upbringings filled with both psychological and physical abuse. They were both dressed as young girls during their younger years and beaten regulary - Lucas' brother once attacked him so badly that he lost an eye "
John Wayne Gacy: "Gacy's father was an alcoholic and physically abusive to all his children. One of Gacy's earliest memories was being beaten so badly with a broom across the head that it knocked him unconscious."
i think thats enough.