Biological Signs of a Killer

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A person does not need to have acquired a doctorate in psychology to determine that there is something horrifically different about serial killers. Quotes from killers show this drastic difference, such as Ted Bundy who said, “What’s one less person on the face of the earth anyway?” (Scott 2). Or Charles Manson who, with seven simple words, disgusted and oppositely inspired millions by saying, “Death is the greatest form of love” (“Charles Manson”). It is inside these people where it is easy to be determined just how unstable the very fabrics of their genetic and brain codes are; many things can be genetically transmitted from parent to offspring through heredity; therefore, so can the biological urge to become a killer. Nurture versus nature has been a long-standing debate. Nature, also known as pro-heredity in this essay, is about what a person’s genetic predispositions are related to behavior and intentions. The Monoamine Oxidase A gene (MAO-A) has earned the nickname “warrior gene” because it has been linked to aggression in observational and survey-based studies (Johnson and Tingley). In an actual study, a man named Jim Fallon, who has studied the biological basis for behavior for nearly 20 years, discovered he had the particular variant, MAO-A, that diminishes the calming effects of serotonin. Not only did Fallon discover this, he also found out that “one of his direct great-grandfathers…was hanged for murdering his mother. That line… produced seven other murderers… Lizzy Borden… ‘Cousin Lizzy’… was accused… of killing her father and stepmother with an ax…” (Hagerty). This is surely due to the fact that this compulsion to killing was inherited down the family lines. Certain signs also show in the brain, as in brain scans... ... middle of paper ... ...side A Psychopath's Brain: The Sentencing Debate." NPR . npr , 30 June 2010 . Web. 26 Mar 2014. . Monk, Richard . Taking Sides: Clashing Views on Controversial Issues in Crime and Crimonology. 4th ed. . Guilford, Connecticut : Dushkin Publishing Group /Brown & Benchmark , 1996. 16-24. Print. Pemment, Jack . "What Would We Find Wrong in the Brain of a Serial Killer?." Psychology Today . Sussex Publishers, LLC , 05 Apr 2013. Web. 10 Mar 2014. would- we-find-wrong-in-the-brain-serial-killer>. Scott, Shirley. "What Makes Serial Killers Tick?." Crime Library . Turner. Web. 26 Mar 2014. .

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