The main causes of the abnormal function of the brain in people with Antisocial Personality Disorder are not known with certainty, although genetics and the environment play an important role. This is because they are the main factors that interfere with the correct development of the brain. As we had the opportunity to see in “Cara a Cara con el psicópata” Vicente Garrido argues, Researchers agree that psychopathy has biological roots, a predisposition that goes through a nervous system that does not quite work well. The most important hypothesis passes through the prefrontal lobe and the amygdala. Thus, in the case of the first, anomalous functioning of this central part of the neocortex could explain its inability to make reasonable decisions, since the prefrontal area is responsible for deliberating and executing …show more content…
Thus, the inability to emotions could be related to what has been observed repeatedly: that psychopaths show less activity in the left amygdala, which would also help to explain that these subjects feel less fear in the presence of threatening stimuli, and who have more difficulty remembering anxiety or fear that are associated with negative experiences. However, it is not clear to what extent it is necessary for the environment to enhance this tendency towards psychopathy. There are many studies that indicate that cruelty and abuse are part of the children's baggage of psychopaths. Some of the best-known serial killers were treated very harshly, with violence and arbitrariness, when they were children. The authors who highlight the existence of mistreatment in the cruel murderers and psychopaths explain that it is the mental illness and the injuries produced by the brutal treatment that lies behind the criminal psychopath.