11/30/2023 0 Comments Serial killer definitionThis original typology, that of the organized or the disorganized offender, was deemed overly simplistic and has since broadly expanded (Canter, 1994 Holmes & Rossmo, 1996 Turco, 1990). Disorganized scenes, in contrast, exhibited a form of murder carried out by an offender who was less apt to plan the offence, who obtained victims by chance, and who behaved haphazardly during the crime (Douglas et al., 1986). Originally, the analysis of crime scenes revealed a dichotomized classification of a crime that was considered to be either organized or disorganized (Hazelwood & Douglas, 1980), the organized typology being a form of murder carried out by an individual who appeared to plan the crime, target the victims specifically, and displayed control (Douglas et al., 1986). These profiles, in turn, are meant to aid law enforcement officers in the detection and apprehension of violent offenders, including serial killers. Profiles consist of aggregated data collected from several sources, which combine to indicate specific characteristics relevant to the offender (Douglas, Ressler, Burgess, & Hartman, 1986). Since the 1970s, investigative profilers at the FBI’s Behavioural Science Unit (BSU) have been analysing crime scenes in the attempt to generate ‘profiles’ of violent offenders. One way in which researchers do this is by grouping related behaviours together, using a “thematic” or offending style typology approach (Grubin et al. Regardless of the type of prediction, to develop any such model, it is important that researchers understand the chain of events that preceded the homicides. In particular, researchers are now beginning to develop models to help to predict who is likely to commit serial homicide, and how to interpret offending patterns as a way to predict later offending behaviour (Hewitt, Beauregard, & Martineau, 2016 Ioana, 2013 Miller, 2014). Athrough it is form of multicide, serial homicide is not to be confused with mass murder, which is defined as four or more murders that occur in one event, with no distinctive time lapse between them, or spree-killing, which is any murder that occurs at two or more locations with no emotional cooling-off period between (Douglas et al., 1992).Īdvances in computational intelligence and the establishment of large datasets have meant that researchers in serial homicide are moving towards predictive models and understanding. Serial homicide, as defined by the Federal Bureau of Investigation, is “the unlawful killing of two or more victims in separate events.” Serial homicide is an intentional, premeditated act, not a crime carried out on impulse or in response to a perceived provocation or threat (Reid, 2016). Homicide is an all-inclusive term, and there are different subcategories of homicide, such as murder, multicide, and manslaughter. Homicide is legally defined as the killing of another person. The present research highlights the importance of childhood abuse as a risk factor for serial killers’ behaviours, and provides a novel and important advance in profiling serial killers and understanding the sequential progression of their life histories. The results provide individual accounts of abuse types and behaviours. Sexual, physical, and psychological abuse often led to distinct crime scene behaviours. Behaviour Sequence Analysis was used to show significant links between behaviours and events across their lifetime. A large database ( n = 233) of male serial killers with known childhood abuse (physical, sexual, or psychological) was analysed according to typologies and crime scene behaviours. The role of early childhood abuse, leading to types of serial murder and behaviours involved in the murders, was analysed using Behaviour Sequence Analysis. The aim of the current research was to provide a new method for mapping the developmental sequences of serial killers’ life histories.
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