Uncovering the Distinguishing Traits of Serial Killers: A Comprehensive Review Abstract: Serial killers have long been the subject of fascination and fear in society. While not all serial killers share the same traits, there are certain characteristics and behaviors that can be used to identify them. The purpose of this article is to provide a comprehensive review of the distinguishing traits of serial killers based on a review of cases in the United States. The article will explore the psychological, social, and biological factors that contribute to their behavior. Additionally, a list of relevant sources in APA style will be provided as a reference for further study. Introduction: Serial killers are individuals who have killed three or more people over a period of time, with a cooling off period in between each murder. The profile of a serial killer is often complex, with behavior influenced by a variety of factors. While not all serial killers share the same traits, there are certain characteristics and behaviors that can be used to identify them. The purpose of this article is to provide a comprehensive review of the distinguishing traits of serial killers based on a review of cases in the United States. Psychological Factors: One common trait among serial killers is the need for power and control over their victims. They may enjoy the feeling of dominance and superiority over their victims. This can manifest in different ways, such as rape, torture, and mutilation. They may also have a lack of empathy towards their victims and may be motivated by a desire for attention and recognition. Some serial killers may also exhibit signs of mental illness, such as borderline personality disorder, schizophrenia, or psychopathy. Social Factors: Serial killers may have a history of childhood abuse or neglect, which can contribute to their behavior. They may also have a lack of social support or relationships. In some cases, they may have a history of substance abuse or addiction. Serial killers may also be able to blend in with society and appear charming and charismatic, which can help them gain the trust of their victims. Biological Factors: There is some evidence to suggest that biological factors may play a role in the behavior of serial killers. Some studies have found that serial killers may have abnormalities in the brain, such as reduced activity in the prefrontal cortex, which is responsible for decision-making and impulse control. Other studies have found that serial killers may have a higher incidence of certain genes, such as the MAOA gene, which has been linked to aggression.