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In applied psychology, investigative psychology attempts to describe the actions of offenders and develop an understanding of crime. [1] This understanding can then help solve crimes and contribute to prosecution and defense procedures. [2] [3] 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.
Investigative Psychology grows directly out of empirical research and logical inference to cover the full range of investigative activities not only the preparation of 'profiles'. The inference processes at the heart of Investigative Psychology contrast with the approach used in the Federal Bureau of Investigation which emphasises subjective processes such as "thinking like the criminal". This field provides a system for the integration of many aspects of psychology into all areas of police investigations and forms of crime. [2] Investigative Psychology stresses that the results of scientific psychology can contribute to many aspects of civilian and criminal investigation, including the full range of crimes from burglary to terrorism, not just those extreme crimes of violence that have an obvious psychopathic component.
The contribution to investigations draws on the extent to which an offender displays various tested characteristics. [4] as well as procedures for enhancing the processes by which interviews are carried out or information is put before the courts. One aim of investigative psychology research is determining behaviourally important and empirically supported information regarding the consistency and variability of the behaviour of many different types of offenders, although to date most studies have been of violent crimes there is a growing body of research on burglary and arson. It is also important to establish valid and reliable methods of distinguishing between offenders and between offences. [4]
Already the use of statistical analysis techniques such as Multi dimensional scaling in offender profiling has provided support for a theoretical distinction between homicide offenders as either instrumental (43% of offenders) or expressive (31% of offenders) in their use of aggression. The most recent advances have seen the development of a Narrative Action System Model for differentiating criminals' styles of offending, allowing empirically based 'modus operandi' to be identified within a broad range of offence types from sexual assault and serial murder to stalking, burglary and robbery. [5] This method of analysis has also expanded upon the original theoretical distinction by identifying sub-themes of aggressive action which can be used to further discriminate amongst offenders (Santilla, Hakkanen, Canter & Elfgren, 2003). These behavioural themes have also been linked to background characteristics and post-offence behaviour, demonstrating their usefulness to the investigation of serial murder cases. [6] The development and application of these techniques to serial offenders is likely to facilitate an increase in the validity of offender profiling of serial murderers. [5]
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 typically a person who murders three or more people, with the murders taking place over more than a month and including a significant period of time between them. While most authorities set a threshold of three murders, others extend it to four or lessen it to two.
A modus operandi is someone's habits of working, particularly in the context of business or criminal investigations, but also more generally. It is a Latin phrase, approximately translated as 'mode of operating'.
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.
Robert K. Ressler was an 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 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.
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.
Robert David Keppel was an American law enforcement officer and detective. He was also an associate professor at the University of New Haven and Sam Houston State University. Keppel was known for his contributions to the investigations of Ted Bundy and Gary Ridgway, and also assisted in the creation of HITS, the Homicide Investigation Tracking System.
John Francis Duffy and David Mulcahy are two British serial rapists and serial killers who together attacked numerous women and children at railway stations in southern England during the 1980s.
Deterrence in relation to criminal offending is the idea or theory that the threat of punishment will deter people from committing crime and reduce the probability and/or level of offending in society. It is one of five objectives that punishment is thought to achieve; the other four objectives are denunciation, incapacitation, retribution and rehabilitation.
Serial crimes are crimes of a repetitive nature. Serial murder, serial rape and serial arson are crimes regarded as serial crimes. However, according to criminologists, a habitual offender or a career criminal is not necessarily a serial criminal.
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.
David Victor Canter is a psychologist. He began his career as an architectural psychologist studying the interactions between people and buildings, publishing and providing consultancy on the designs of offices, schools, prisons, housing and other building forms as well as exploring how people made sense of the large scale environment, notably cities. He set up the Journal of Environmental Psychology in 1980. His work in architecture led to studies of human reactions in fires and other emergencies. He wrote about investigative psychology in Britain. He helped police in 1985 on the Railway Rapist case. He was the professor of psychology at the University of Surrey for ten years, where he developed investigative psychology described in detail in Investigative Psychology: Offender Profiling and the Analysis of Criminal Action and a course curriculum. He set up and was director of the Centre For Investigative Psychology, which is based at the University of Liverpool. From 2009 he was at the University of Huddersfield, where he directed the International Research Centre in Investigative Psychology. He retired from there in 2018. He is emeritus professor at the University of Liverpool and continues to publish in environmental and crime/forensic psychology.
Police psychology, also referred to as "police and public safety psychology," was formally recognized in 2013 by the American Psychological Association as a specialty in professional psychology. The goal of police psychology is to ensure law enforcement is able to perform their jobs safely, effectively, ethically, and lawfully.
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.
David J. Icove is a former Federal Bureau of Investigation Criminal Profiler and FBI Academy Instructor in the elite Behavioral Analysis Unit. He was one of the FBI's first criminal profilers to specialize in the apprehension of serial arsonists and bombers. He is Fellow in the National Academy of Forensic Engineers and co-author along with Gerald A. Haynes of Kirk's Fire Investigation, the leading textbook in the field of fire investigation.
Crime in New Zealand encompasses criminal law, crime statistics, the nature and characteristics of crime, sentencing, punishment, and public perceptions of crime. New Zealand criminal law has its origins in English criminal law, which was codified into statute by the New Zealand parliament in 1893. Although New Zealand remains a common law jurisdiction, all criminal offences and their penalties are codified in New Zealand statutes.