profilarea infractorului Flashcards
what is offender profiling
the practice of inferring an offender’s characteristics from crime scene behaviour.
what type of assumptions are made
what happened at the crime scene?
what type of person is most likely to have committed the crime?
what personality characteristics would such a person have?
Assumption: behaviours are exhibited during the commission of a crime and are reflected in the crime scene evidence that is left behind. Therefore, examination of the crime scene allows inferences to be made about the likely offender.
- what is another assumption of offender profiling?
Behavioural consistency.
offenders have relatively distinct and consistent behavioural styles
- what is another assumption of offender profiling
Homology.
offenders with similar behavioural styles have similar background characteristics
According to Jeffers (1991) offender profiling will never…
- take the place of thorough, well planned investigations
- eliminate the need for highly trained and skilled police officers
what are the 3 approaches to offender profiling?
Crime scene analysis
Investigative psychology
Geographic profiling
- what is crime scene analysis
assists police in solving the most bizarre and extreme crimes
offers a top-down approach to offender profiling
uses the experience and intuition of the profiler to interpret the crime scene
- what is investigate psychology
applied to a wider range of crimes including burglary and arson
offers a bottom-up approach to offender profiling
uses psychological theory and research to interpret evidence from the crime scene
- what is geographic profiling
situated within the investigative psychology framework
uses the locations of crimes to estimate the offender’s area of residence
- Crime scene analysis in more DETAIL
- Profiling inputs: collection of all available information about the crime
- Decision process model: information is organised and consideration is given to the murder type and style, primary intent, victim risk, offender risk, escalation, time factors and location factors
- Crime assessment: reconstruction of the crime and categorisation as organised and disorganised
- Crime scene analysis - what are the 2 types of offender
Organised offender - planned, victims systematically targeted, weapons absent, body transported or hidden. Reasonably intelligent, underachiever, sporadic education and employment history, in a relationship, socially adept at a superficial level
Disorganised offender - unplanned, victims randomly selected, weapon present, same murder and crime scene. Low intelligence, psychiatric disturbance, socially inept with few interpersonal relationship outside of the immediate family, sexually incompetent
crime scene analysis - crime profile
information is pulled together and the profile is constructed
includes hypotheses regarding likely demographic and behavioural characteristics
may include recommendations for identification, apprehension and interviewing
crime scene analysis - investigation
submission of a written report to the agency investigating crime
evaluation of the profile and profiling if a suspect is identified, apprehended and confesses
- Investigate psychology - assumptions
Assumptions
- Interpersonal coherence - the perpetration of crimes will reflect behaviour in everyday life
- Time and place - crime locations provide information about area of residence
- Criminal characteristics - offender characteristics can be classified into categories
- Criminal career - the perpetration of similar crimes can be used to identify probable criminal careers
- Forensic awareness - reflects contact with the justice system
investigative psychology
Less common crime scene and offender characteristics could be classified into three underlying themes:
- Instrumental opportunistic: face hidden, multiple wounds in one areas, premises of the victim
- Instrumental cognitive: face up, blunt instrument, body transported
- Expressive impulsive: limbs attacked, multiple wounds all over the body
- Geographic profiling - principles
Locatedness - crime locations provide information about the offender’s area of residence
Systematic crime location choice - the locations where crimes occur are not random
Centrality - crimes are most likely to occur in locations where the offender is familiar
Comparative case analysis (linking crimes) - the more crimes, the stronger the application of geographic profiling
- geographic profiling - investigative strategies
suspect prioritisation and patrol saturation and static stakeholders. prioritise suspects and direct the use of police patrols and stakeout
neighbourhood canvassing and postal code prioritisation. direct door-to-door canvassing particular areas and rank address databases
bloodings. direct the DNA testing of potential suspects in postal area that have been prioritised
Evaluation of crime scene analysis
lacks a clear theoretical foundation
over relies on the experience and intuition
based on a small sample of imprisoned serial murderers
weakness of non-exclusivity of the organised-disorganised typology
evaluation of investigative psychology and geographic profiling
based on limited samples of apprehended offenders
poor quality for the development and testing of the approach
effectiveness of offender profiling - accuracy
real case involving the brutal murder and mutilation of a young woman
police officers received a profile together with one of two versions of the offender’s characteristics
version 1. genuine offender
version 2. fabricated offender
profiles differed according to age, known victim, employment, previous convictions
over 75% somewhat accurate and over 50% generally or very accurate
effectiveness of offender profiling - behavioural consistency
offenders relatively consistent in the types of crime they commit and the behavioural styles they adopt
effectiveness of offender profiling - homology
little support for this assumption
offenders with different behavioural styles often have similar background characteristics
effectiveness of offender profiling - general consensus
Profiling could have an important role to play in criminal investigations
Most useful. In the context of bizarre and extreme cases or in serial cases
Least useful. In the context of property or drug crimes
limitations of offender profiling
Offender profiling is reductive rather than productive
Potential for inaccurate profiles to mislead investigations
Utility of profiles in the apprehension of offenders is still unknown