Biological overall refers to factors such as hormones, brain functioning and genetics, even so there is no gene for crime but it can have an impact to a lifestyle. The gene metabolising enzyme monoamine oxidase effects the brains natural neurotransmitters like serotonin which regulate mood, so in any absence of these chemicals it results in a more aggressive genotype which can be a cause of anti-socialisation with …show more content…
And as a result if the superego is damaged would result in an antisocial person .The individuals who commit lethal brutality are constrained by forces that are right now outside our ability to comprehend. The most reasonable explanation we can achieve is with the extraordinary blend of the three fundamental sources of the identity development. To explain the marvel of the serial murderers is a difficult task as their mind and character are unique and complex so these theories do not do just in creating an argument with a strong hold and fall short. “What makes a serial killer is the combination of many complex and interrelated neurological, social, psychological, environmental, and physiological factors” (Knight,