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. Multiple crimes may be linked to a specific offender and the profile may be used to predict the identified offender's future actions. In the 1980s, most researchers believed offender profiling was relevant only to sex crimes, like serial rape or sexual homicide, but since the late 1990s research has been published to support its application to arson (1998), and then later terrorism (2000) and burglary (2017).
Psychological profiling is described as a method of suspect identification which seeks to identify a person's mental, emotional, and personality characteristics based on things done or left at the crime scene.
There are two major assumptions made when it comes to offender profiling: behavioral consistency and homology. Behavior consistency is the idea that an offender's crimes will tend to be similar to one another. Homology is the idea that similar crimes are committed by similar offenders.
Fundamental assumptions that offender profiling relies upon, such as the homology assumption, have been proven outdated by advances in psychology and behavioral science. The majority of profiling approaches assume that behavior is primarily determined by personality, not situational factors, an assumption that psychological research has recognized as a mistake since the 1960s.
There is a lack of scientific research or evidence to support psychological profiling as useful in criminal investigations. Critics question the reliability, validity, and utility of criminal profiles generally provided in police investigations. Even over the years common criminal profiling methods have changed and been looked down upon due to weak definitions that differentiate the criminal's behaviors, assumptions and their psychodynamic process of the offender actions and characteristics that occur. In other words, this leads us to poor and misleading profiles on offenders because they are based on opinions and decisions made up from one profiler conducting research on the offender. The more recent attempts at research into profiling's effectiveness have prompted researchers to label it as pseudoscientific. Malcolm Gladwell of The New Yorker compared profiling to astrology and cold reading. Also critics like Brent Snook and his colleagues described criminal profiling as an investigative tool hidden behind a lack of scientific evidence and support.
The profession of criminal profiling is highly unregulated. There is no governing body which determines who is and who is not qualified to be a criminal profiler, and therefore those who identify themselves as criminal profilers may range from someone with minimal to someone with extensive experience in the realm of criminal investigation. In addition to the lack criteria as to what makes an expert in the field of criminal profiling, there is little empirical evidence supporting the accuracy of criminal profiling. There is an abundance of anecdotal based support for criminal profiling, much of which originates from reports made by police officers and investigators regarding the performance of criminal profilers. However, law enforcement agents have been found to greatly support the use of criminal profiling, but studies have shown that detectives are poor profilers themselves. One study presented police officers with two different profiles for the same perpetrator, each of which varied greatly from the officers’ own description. It was found that the officers were unable to determine whether one profile was more accurate than the other, and felt that all profiles accurately described the perpetrator. Officers were able to find truth in whichever profile they viewed, believing it accurately described the perpetrator, demonstrating the presence of the Barnum effect. In addition, an investigator's judgement of the accuracy of a profile is impacted by the perceived source of the information; if the officer believes that the profile was written by an “expert” or “professional”, they are likely to perceive it as more accurate than a profile written by someone who is identified as a consultant. This poses a genuine problem when considering that there is no true criteria which determines who may be considered a “professional” criminal profiler, and when considering that support for criminal profiling is largely based on the opinion of police officers.
The most routinely used typology in profiling is categorizing crime scenes, and by extension offender's personalities, as either "organized" or "disorganized". The idea of classifying crime scenes according to organized/disorganized dichotomy is credited to the FBI profiler Roy Hazelwood.
Criminal profiling can also be ex-ante or ex-post. Descriptive profiling of a perpetrator is a type of ex-post profiling, and can be used to prevent a serial killer from striking again.
There are three leading approaches in the area of offender profiling: the criminal investigative approach, the clinical practitioner approach, and the scientific statistical approach. The criminal investigative approach is what is used by law enforcement and more specifically by the Behavioral Analysis Unit (BAU) within the FBI. The BAU "assists law enforcement agencies by their review and assessment of a criminal act, by interpreting the offender's behavior during the crime and the interactions between the offender and the victim during the commission of the crime and as expressed in the crime scene." The clinical practitioner approach focuses on looking at each case as unique, making the approach very individualistic. One practitioner, Turco, believed that all violent crimes were a result of the mother-child struggle where female victims represent the offender's mother. This is also recognized as the psychodynamic approach. Another practitioner, Copson, outlined some principles for profiling which include being custom made, interactive and reflexive. By following these principles, the profile should include advice that is unique and not from a stereotype, should be easy to understand for all levels of intelligence, and all elements in the profile should influence one another. The Scientific approach relies heavily on the multivariate analysis of behaviors and any other information from the crime scene that could lead to the offender's characteristics or psychological processes. According to this approach, elements of the profile are developed by comparing the results of the analysis to those of previously caught offenders.
Wilson, Lincon and Kocsis list three main paradigms of profiling: diagnostic evaluation, crime scene analysis, and investigative psychology. Ainsworth identified four: clinical profiling (synonymous with diagnostic evaluation), typological profiling (synonymous with crime scene analysis), investigative psychology, and geographical profiling.
Five steps in profiling include: One- Analyzing the criminal act and comparing it to similar crimes in the past. Two- An in-depth analysis of the actual crime scene, Three- Considering the victim's background and activities for possible motives and connections, Four- Considering other possible motives. Five- Developing a description of the possible offender that can be compared with previous cases.
One type of criminal profiling is referred to as linkage analysis. Gerard N. Labuschagne defines linkage analysis as "a form of behavioral analysis that is used to determine the possibility of a series of crimes as having been committed by one offender." Gathering many aspects of the offender's crime pattern such as modus operandi (MO), ritual or fantasy-based behaviors exhibited, and the signature of the offender, help to establish a basis for a linkage analysis. An offender's modus operandi is the habits or tendencies during the killing of the victim. An offender's signature is the unique similarities in each of the kills. Mainly, linkage analysis is used when physical evidence, such as DNA, cannot be collected.
Labuschagne states that in gathering and incorporating these aspects of the offender's crime pattern, investigators must engage in five assessment procedures: One- Obtaining data from multiple sources. Two- Reviewing the data and identifying significant features of each crime across the series. Three- Classifying the significant features as either modus operandi or ritualistic. Four- Comparing the combination of modus operandi and ritual or fantasy-based features across the series to determine if a signature exists. Five- Compiling a written report highlighting the findings.
There are six stages to developing a criminal profile: profiling inputs, decision process models, crime assessment, criminal profiling, investigation, and apprehension. The FBI and BAU tend to study specific categories of crimes such as white collar and serial murder.
The first offender profile was assembled by detectives of the Metropolitan Police on the personality of Jack the Ripper, a serial killer who had murdered a series of prostitutes in the 1880s. Police surgeon Thomas Bond was asked to give his opinion on the extent of the murderer's surgical skill and knowledge. Bond's assessment was based on his own examination of the most extensively mutilated victim and the post mortem notes from the four previous canonical murders. In his notes, dated November 10, 1888, Bond mentioned the sexual nature of the murders coupled with elements of apparent misogyny and rage. Bond also tried to reconstruct the murder and interpret the behavior pattern of the offender. Bond's basic profile included that "The murderer must have been a man of physical strength and great coolness and daring... subject to periodic attacks of homicidal and erotic mania. The characters of the mutilations indicate that the man may be in a condition sexually, that may be called Satyriasis."
James Brussel was a psychiatrist who rose to fame after his profile of New York City's Mad Bomber was published in the New York Times in 1956. The media dubbed him "The Sherlock Holmes of the Couch." In his 1968 book Casebook of a Crime Psychiatrist, Brussel relates how he famously predicted that the bomber would wear a buttoned-up double-breasted suit, but edited out the many incorrect predictions he had made in his profile, claiming he had successfully predicted the bomber would be a Slav who lived in Connecticut, when he had actually predicted he would be "born and educated in Germany," and live in White Plains, New York. In 1964, Brussel profiled the Boston Strangler for the Boston Police Department.
Investigations of serial killers Ted Bundy and the Green River Killer were performed in 1974 by Robert Keppel and psychologist Richard Walter. They went on to develop the four subtypes of violent crime and the Hunter Integrated Telemetry System (HITS) database which compiled characteristics of violent crime for research.
At the FBI's BSU, Robert Ressler and John Douglas began an informal series of ad hoc interviews with 36 convicts starting in early 1978.:230–231 Douglas and Ressler later created a typology of sexually motivated violent offenders and formed the National Center for the Analysis of Violent Crime.
The March 1980 issue of the FBI Law Enforcement Bulletin invited local police to request profiles from the FBI. An article in the April 1980 issue, "The Lust Murderer," introduced the dichotomy of "organized" and "disorganized" offenders. The August 1985 issue described a third, "mixed" category.
Profiling as an investigative tool has a high level of acceptance among both the general public and police.
In the United States, between 1971 and 1981, the FBI had only profiled cases on 192 occasions. By 1986, FBI profilers were requested in 600 investigations in a single year. By 1996, 12 FBI profilers were applying profiling to approximately 1,000 cases per year.
In the United Kingdom, 29 profilers provided 242 instances of profiling advice between 1981 and 1994, its usage increasing steadily over that period.
Surveys of police officers in the United States, the United Kingdom, and Canada have found an overwhelming majority consider profiling to be useful. A 2007 meta-analysis of existing research into offender profiling noted that there was "a notable incongruity between [profiling's] lack of empirical foundation and the degree of support for the field."
Profiling's continued popularity has been speculatively attributed to broad use of anecdotes and testimonials, a focus on correct predictions over the number of incorrect ones, ambiguous profiles benefiting from the Barnum effect, and the popular appeal of the fantasy of a sleuth with deductive powers like Hercule Poirot and Sherlock Holmes.
Notable profilers include Roy Hazelwood, who profiled sexual predators; Ernst Gennat, a German criminologist, who developed an early profiling scheme for the police of Berlin; Walter Charles Langer, who predicted Hitler's behavior and eventual suicide; Howard Teten, who worked on the case of Martin Luther King Jr.'s assassination; and John E. Douglas, who worked on a wave of child murders in Atlanta in the 1980s.
In a review of the literature by Eastwood et al. (2006), one of the studies noted, Pinizzotto and Finkel (1990), showed that trained criminal profilers did not do any better than non-profilers in producing an accurate profile. A 2000 study also showed that profilers were not significantly better at creating a profile than any other participating groups.
A survey of statements made in offender profiles done for major cases from 1992 to 2001 found that "72% included repetition of the details of what occurred in the offence (factual statements already known by the police), references to the profiler’s competence [...] or caveats about using the material in the investigation." Over 80% of the remaining statements, which made claims about the offender's characteristics, gave no justification for their conclusion.
A 2003 study which asked two different groups of police to rate how accurately a profile matched a description of the apprehended offender, with one group given a description of a completely fabricated offender instead of the real one, found that the profile was rated equally accurate in both cases.
There is a lack of clear, quantifiable evidence of a link between crime scene actions (A) and offender characteristics (C), a necessary supposition of the A to C paradigm proposed by Canter (1995). A 2002 review by Alison et al. concluded, "The notion that particular configurations of demographic features can be predicted from an assessment of particular configurations of specific behaviors occurring in short-term, highly traumatic situations seems an overly ambitious and unlikely possibility. Thus, until such inferential processes can be reliably verified, such claims should be treated with great caution in investigations and should be entirely excluded from consideration in court."
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statistically proven to correlate with certain criminal conduct can be effective law enforcement tools
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Cited works and further reading
- Alison, Laurence; Rainbow, Lee (2011). Professionalizing Offender Profiling: Forensic and Investigative Psychology in Prectice. New York: Routledge. ISBN 978-0-415-66878-1.
- Canter, David; Youngs, Donna (2008). Principles of Geographical Offender Profiling. New York: Ashgate Publishing. ISBN 978-0-754-62549-0
- Douglas, John; Olshaker, Mark (1997). Journey Into Darkness: The FBI's Premier Investigator Penetrates the Minds and Motives of the Most Terrifying Serial Killers. London: Arrow Books. ISBN 978-1-439-19981-7
- Evans, Colin (1996). The Casebook of Forensic Detection: How Science Solved 100 of the World's Most Baffling Crimes. New York: John Wiley & Sons Inc. ISBN 978-0-471-07650-6.
- Jeffers, H. Paul (1991). Profiles in Evil: Chilling Case Histories from the FBI's Violent Crime Unit. London: Warner Books. ISBN 978-0-708-85449-5.
- Ressler, Robert; Schachtman, Tom (1992). Whoever Fights Monsters: The True Story of the Brilliant FBI Detective Behind Silence of the Lambs. New York: Pocket Books. ISBN 978-0-671-71561-8.
- Criminal Investigative Research and Analysis (CiR&A) Group: Current research on evidence-based behavioural investigative practice in police investigations
- Swiss scientific research site on criminal profiling
- University of Liverpool Forensic Psychology - with articles
- History of Criminal Profiling - with links to other sites
- Offender Profiling: An Introduction to the Sociopsychological Analysis of Violent Crime - PDF available
- Dangerous Minds: Criminal profiling made easy, by Malcolm Gladwell