Why Are Most Serial Killers Men? The Dark Truth.

In the world of criminology, gender plays a significant role in the profiling of serial killers. According to statistics, the majority of convicted serial killers are men. Numerous studies have attempted to examine the psychological, social, genetic, and environmental factors behind this trend, but a single answer has yet to be found. This article delves into the reasons why most serial killers are men and the dark truths that surround this phenomenon.

The Definition of a Serial Killer

Before we delve into why most serial killers are men, it is essential to understand what a serial killer is. A serial killer is someone who kills three or more people over time, usually with a cooling-off period between each murder. From a psychological perspective, this individual feels no remorse or guilt for their actions. Furthermore, each murder is unique, with no clear motive or intention. Serial killers seek pleasure and satisfaction from the act of killing, which they often describe as an addiction.

Statistics on Serial Killers

When it comes to serial killers, the numbers speak for themselves. According to the FBI, roughly 90% of serial killers are male, while less than 10% are female. In 2019, the FBI reported that 87% of serial killers were male. Additionally, approximately 55% of known serial killers are white, while 27% are African American. Another vital fact is that the majority of serial killers are heterosexual.

Why Are Most Serial Killers Male?

Here are several potential explanations for why men are more likely to become serial killers than women:

1. Socio-Cultural Factors

From a socio-cultural perspective, men and women are socialized to view violence and aggression differently. Men are taught, both implicitly and explicitly, that violence is an acceptable form of expression. Violent behavior is often associated with masculinity and strength, and men are encouraged to assert their dominance through physical aggression. In contrast, women are socialized to be nurturing, empathetic, and nonviolent. As a result, they are less likely to engage in violent behavior, including murder.

2. Genetic Factors

Some researchers suggest that there may be a genetic component to serial killing. Studies have found that some genes are associated with violent behavior, aggression, and impulsivity. For example, the MAOA gene, also known as the “warrior gene,” has been linked to aggressive behavior. While these genes alone do not cause someone to become a serial killer, they may play a role in certain individuals.

3. Personality Traits

Personality disorders are common among serial killers. Psychopathy and sociopathy are two personality disorders that have been linked to violent behavior. Most male serial killers have a grandiose sense of self, lack empathy for others, and feel no guilt or remorse for their actions. These traits make it easier for them to kill without hesitation.

4. Environmental Factors

The environment in which someone grows up can increase their chances of becoming a serial killer. Childhood trauma, such as physical or sexual abuse, can lead to a host of mental health problems, including personality disorders, anxiety, and depression. Furthermore, exposure to violent or graphic media can desensitize an individual to violence, making it easier for them to commit violent acts.

5. Opportunity

It is more likely that a man will have the opportunity to become a serial killer simply because they have more access to potential victims. Men are more likely to work in fields that require close interaction with (often vulnerable) individuals, such as healthcare, law enforcement, and charities. They may also have greater physical strength, which allows them to overpower their victims.

The Dark Truth about Male Serial Killers

The reasons behind why most serial killers are men are complex and multifaceted. Unfortunately, the dark truth is that men’s socialization towards violence and aggression, coupled with the personality traits and environmental factors that can lead to serial killing, have resulted in countless deaths at the hands of male serial killers throughout history. Most victims of male serial killers are women, with many being young and vulnerable, such as sex workers, runaways, and children.

Power and Control

The act of serial killing is not only about murder but also about power and control. For many male serial killers, the intense feelings of pleasure they derive from killing stem from the control they feel over their victims’ lives. They enjoy playing god, manipulating and torturing their victims before ultimately ending their lives. This need for control and dominance is deeply ingrained in the male psyche and is responsible for much of the violence and aggression we see in the world today.

Murder as Entertainment

Another dark truth is that male serial killers often view their crimes as a form of entertainment. They derive a sense of excitement and exhilaration from planning and carrying out murders, often documenting their kills with photographs or trophies. The violent nature of murder appeals to the adrenaline-fueled side of the male brain, which can become addicted to the feelings of power and dominance it experiences during the act of killing.

Preventing Male Serial Killers

Preventing male serial killers may seem like an insurmountable challenge, but experts agree that early intervention and education can make a big difference. Teaching boys and men to express their emotions in nonviolent ways and promoting empathy, respect, and communication can help break the cycle of violence that leads to serial killing. Mental health resources should also be available to children who have experienced trauma or other risk factors that could lead to violent behavior later in life.

Most Common Questions and their Answers

  • Why are most serial killers men?
    • Men are more likely to become serial killers because of socio-cultural factors, genetic factors, personality traits, environmental factors, and opportunity.
  • What percent of serial killers are male?
    • Approximately 90% of serial killers are male.
  • Are most serial killers white?
    • Approximately 55% of known serial killers are white, while 27% are African American.
  • What is the most common motive for serial killers?
    • There is no one single motive for serial killers. Each murder is unique, and there is often no clear intention or motive.
  • Do all serial killers have a mental illness?
    • While many serial killers have a personality disorder or other mental illness, not all do. The act of serial killing does not necessarily indicate a mental illness.
  • Can male serial killers be rehabilitated?
    • Once someone has become a serial killer, rehabilitation is often difficult, if not impossible. However, early intervention, such as therapy and mental health support, can help prevent violence before it occurs.


  • Burgess, A. W., & Ressler, R. K. (1986). Sexual homicide: Patterns and motives. Lexington, MA: Lexington Books.
  • Dahl, H. (2021). Serial killers: A psychological exploration. SAGE Publications Limited.
  • Hickey, E. W. (2012). Serial murderers and their victims. Cengage Learning.
  • Kelleher, M. D., & Kelleher, C. A. (1998). Murder most rare: The female serial killer. Praeger Publishers.
  • Meadow, A. (2021). The Social Construction of Violent Masculinity: A Critical Approach to Men, Masculinities, and Serial Murder. Springer International Publishing.

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