Serial crimes are crimes of a repetitive nature. Serial murder, serial rape and serial arson are crimes regarded as serial crimes.
The potential crime locations usually contain the characteristics of the limited diversity and the narrow geographical range. Based on the analysis on the locations that the serial offenders adopt to encounter and release their victims, the consistency and the limited diversity involve in these locations across a series of crimes. [1] To further expand upon the limited diversity and define the scope of the criminal sites, several researches provide some numerical data. One research clarifies the particular range of the homicide case locations selected by the offenders. [2] This research concludes that the majority of the serial killers lives within 10 kilometers from the crime locations. [2] Another study claims that the offenders often choose a place near to their accommodations as the crime sites (i.e., the median distance between the offender's home and the criminal spot is 3 kilometers). [3]
"Marginalization" and "unfamiliarity" play a role in how serial killers select their target victims. The marginalized people refer to the individuals who are excluded by the modern institution based on the excuse of reprobation and censure. [4] Vagrants, the homeless, prostitutes, migrant workers, and homosexuals become the major members of marginalized people. [4] The unfamiliar people simply mean the group that the serial killers lack the previous interaction with. Based on the data collected from 97 victims and 21 serial killers, the strangers usually become their priority victim choice for the serial murderers. [5]
Instead of summarizing certain features shared among the killing behaviors of the serial murderers, researches indicate the consistent behavioral patterns from three dimensions. The serial homicide offenders express relatively consistent behaviors in aggressive actions during serial homicides. [6] The scholars in the field of criminology and psychology often categorize the killing behaviors as aggressive actions, which expresses that every criminal conducts similar killing behavior patterns in his/her murdering series.
A higher possibility of consistency in the behavioral features for the serial killers occurs as their criminal case number increases. [7] Scientifically, people will categorize a person as a serial killer through various metrics. One of the metrics claims that the high number of criminal cases becomes one of the core criteria to determine a person as the serial killer. Therefore, combined with this finding, the serial killers conducted consistent criminal behavior patterns based on their high crime case numbers.
The trace of the consistent criminal behavior pattern among the serial murderers appears in the connection between the serial killers and their victims. Researchers conduct an experiment to express that the offenses made by serial killers can behaviorally link to the same offenders. [8] The capability to connect the crimes made by the criminals with the offenders exhibits that similar features exhibited through their offenses. These similar characteristics imply the outcome of the same criminal behaviors conducted by the same serial murderers, which indirectly implies the behavior consistency of the serial killers.
While some serial homicide cases appear an overall consistent pattern, some exceptional serial murdering cases do not follow the general consistent pattern. However, minor patterns still exist in the overall inconsistent criminal behaviors. Analyzing the development and details of the overall inconsistent killing behaviors, minor consistencies in three aspects of homicide behaviors (i.e., planning, wounding, or interaction with the victim). [9] Therefore, people can always discover the consistency of criminal behaviors either by skimming through the overall behaviors of serial killers or zooming in on every individualized behavior of serial murderers.
Victimology is the study of victimization, including the psychological effects on victims, the relationship between victims and offenders, the interactions between victims and the criminal justice system—that is, the police and courts, and corrections officials—and the connections between victims and other social groups and institutions, such as the media, businesses, and social movements.
A serial killer is a person who murders three or more people, with the killings taking place over a significant period of time in separate events. Their psychological gratification is the motivation for the killings, and many serial murders involve sexual contact with the victims at different points during the murder process. The United States Federal Bureau of Investigation (FBI) states that the motives of serial killers can include anger, thrill-seeking, financial gain, and attention seeking, and killings may be executed as such. The victims tend to have things in common, such as demographic profile, appearance, gender, or race. As a group, serial killers suffer from a variety of personality disorders. Most are often not adjudicated as insane under the law. Although a serial killer is a distinct classification that differs from that of a mass murderer, spree killer, or contract killer, there are overlaps between them.
Lust murder, also called sexual homicide, is a homicide which occurs in tandem with either an overt sexual assault or sexually symbolic behavior. Lust murder is associated with the paraphilic term erotophonophilia, which is sexual arousal or gratification contingent on the death of a human being. The term lust killing stems from the original work of Richard von Krafft-Ebing in his 1898 discussion of sadistic homicides. Commonly, this type of crime is manifested either by murder during sexual activity, by mutilating the sexual organs or areas of the victim's body, or by murder and mutilation. The mutilation of the victim may include evisceration, displacement of the sexual organs, or both. The mutilation usually takes place postmortem. Although the killing sequence may include an act of sexual intercourse, sexual intercourse does not always occur, and other types of sexual acts may be part of the homicide.
Criminal psychology, also referred to as criminological psychology, is the study of the views, thoughts, intentions, actions and reactions of criminals and suspects. It is a subfield of criminology and applied psychology.
Geographic profiling is a criminal investigative methodology that analyzes the locations of a connected series of crimes to determine the most probable area of offender residence. By incorporating both qualitative and quantitative methods, it assists in understanding spatial behaviour of an offender and focusing the investigation to a smaller area of the community. Typically used in cases of serial murder or rape, the technique helps police detectives prioritize information in large-scale major crime investigations that often involve hundreds or thousands of suspects and tips.
The National Center for the Analysis of Violent Crime (NCAVC) is a specialist FBI department. The NCAVC's role is to coordinate investigative and operational support functions, criminological research, and training in order to provide assistance to federal, state, local, and foreign law enforcement agencies investigating unusual or repetitive violent crimes.
The Behavioral Analysis Unit (BAU) is a department of the Federal Bureau of Investigation's National Center for the Analysis of Violent Crime that uses behavioral analysts to assist in criminal investigations. Their mission is to provide behavioral-based investigative and/or operational support by applying case experience, research, and training to complex and time-sensitive crimes, typically involving acts or threats of violence.
Piquerism refers to a sexual interest in penetrating the skin of another person with sharp objects. Sometimes, this is serious enough to cause extreme injuries or even death. Piquerism is a paraphilia as well as a form of sadism. The most frequently targeted areas of the body are the breasts, buttocks, and groin.
Robert Kenneth Ressler was an American FBI agent and author. He played a significant role in the psychological profiling of violent offenders in the 1970s and is often credited with coining the term "serial killer", though the term is a direct translation of the German term Serienmörder coined in 1930 by Berlin investigator Ernst Gennat. After retiring from the FBI, he authored a number of books on serial murders, and often gave lectures on criminology.
Articles related to criminology and law enforcement.
In criminology, a disorganized offender is a type of serial killer classified by unorganized and spontaneous acts of violence. The distinction between "organized" and "disorganized" offenders was drawn by the American criminologist John Douglas and Roy Hazelwood. These profiles were also studied and modified in the FBI's Behavioral Science Unit located in Quantico, Virginia. By classifying these offenders into different categories, the FBI is able to track down offenders by studying their behavior and habits.
The Violent Criminal Apprehension Program (ViCAP) is a unit of the United States Federal Bureau of Investigation responsible for the analysis of serial violent and sexual crimes, based in the Critical Incident Response Group's (CIRG) National Center for the Analysis of Violent Crime (NCAVC).
Offender profiling, also known as criminal profiling, is an investigative strategy used by law enforcement agencies to identify likely suspects and has been used by investigators to link cases that may have been committed by the same perpetrator. The originator of modern profiling was FBI agent Robert Ressler. He defined profiling as the process of identifying all psychological characteristics of an individual and forming a general description of their personality based on an analysis of crimes they have committed.
John Edward Douglas is an American retired special agent and unit chief in the United States Federal Bureau of Investigation (FBI).
In applied psychology, investigative psychology attempts to describe the actions of offenders and develop an understanding of crime. This understanding can then help solve crimes and contribute to prosecution and defense procedures. It brings together issues in the retrieval of investigative information, the drawing of inferences about that information and the ways in which police decision making can be supported through various systems derived from scientific research. It should not be confused with profiling which grew out of the experience of police officers offering opinions to their colleagues about the possible characteristics of unknown offenders.
The FBI method of profiling is a system created by the Federal Bureau of Investigation (FBI) used to detect and classify the major personality and behavioral characteristics of an individual based upon analysis of the crime or crimes the person committed.
The Behavioral Science Unit (BSU) is the original name of a unit within the Federal Bureau of Investigation's (FBI) Training Division at Quantico, Virginia, formed in response to the rise of sexual assault and homicide in the 1970s. The unit was usurped by the Critical Incident Response Group (CIRG) and renamed the Behavioral Research and Instruction Unit (BRIU) and currently is called the Behavioral Analysis Unit (5) (BAU-5) within the National Center for Analysis of Violent Crime (NCAVC). The BAU-5 currently works on developing research and then using the evidence-based results to provide training and improve consultation in the behavioral sciences—understanding who criminals are, how they think, why they do what they do—for the FBI and law enforcement communities.
A serial rapist is someone who commits multiple rapes, whether with multiple victims or a single victim repeatedly over a period of time. Some serial rapists target children. The terms sexual predator, repeat rape and multiple offending can also be used to describe the activities of those who commit a number of consecutive rapes, but remain unprosecuted when self-reported in research. Others will commit their assaults in prisons.
Studies have been made of the "hunting patterns" of serial offenders, mainly serial killers and those committing repeated sex crimes. By hunting patterns are meant the interaction of time, space, and activity of a serial offender's criminal behavior. The attempt is made to ascribe rational motives to the offender's choice of places and times; investigators may invoke routine activity theory and rational choice theory in relation to the location of crimes.
Themba Anton Sukude, also known as the Newcastle serial killer, is a South African serial killer who murdered four men and raped two women in Newcastle's Trim Park between February 2004 and January 2005. His initial modus operandi consisted of targeting couples. He would bludgeon the male with a rock and rape the female. However, he later switched to solely targeting men. He was caught in March 2005 after confessing to a stranger, and convicted of the crimes the following year. He is serving five life sentences as well as an additional 40 years.