forensic psychology Flashcards
(83 cards)
what is offender profiling?
an investigative tool used by police to help predict and profile the characteristics of an unknown criminal
what is the aim of offender profiling?
to narrow the field of enquiry and list of suspects
what are the two methods of offender profiling?
-the top down approach
-the bottom up approach
define the top down approach:
a qualitative approach to offender profiling - starts with established
categorisation, individuals are
assigned to these types based on witness accounts and crime scene evidence
key features of the top-down approach:
-it’s based on police experience and
case studies rather than psychological theory
-it’s suitable for more extreme crimes (murder, rape and ritualistic crimes)
-originated in the USA due to FBI work
-murders or rape crimes are classified into either category: organised or disorganised
what are the two categories of the top down approach based on?
the idea that serious offenders have certain ways of working
study relating to top down typology:
hazelwood and douglas (1980)
aim of the hazelwood and douglas study:
to identify the major personality characteristics of serious offenders and how they differed from non-offenders
participants of the hazelwood and douglas study:
36 convicted serial killers in american prisons whose crimes had
sexual elements (including Charles Manson and Ted Bundy)
method of the hazelwood and douglas study:
lengthy unstructured interviews with information collected about the
crime scene
results of the hazelwood and douglas study:
information from the crime scene revealed that crimes were either
premeditated and planned or sudden and unrehearsed
conclusion of the hazelwood and douglas study:
-it was concluded that the crime scene could be used in the same
way as a fingerprint to help identify the murderer
-it was believed that the crime scenes revealed clear evidence of whether offences had been committed by ‘organised’ or ‘disorganised’ offenders
which three aspects do organised and disorganised criminals differ on?
-behaviour towards victim
-crime scene detail
-characteristics of criminal
behaviour towards victim:
organised v disorganised
organised:
-victim targeted
-cntrols conversation
disorganised:
-victim selected at random
-crime unplanned
-avoids conversation
crime scene detail:
organised v disorganised
organised:
-weapon absent
-body hidden from view
-body moved from crime scene
artempts to clean up
disorganised:
-weapon present
-sexual activity after death
-body left in view at crime scene
characteristics of an organised criminal:
-high intelligence
-socially competent
-sexually competent
-skilled occupation
-watches media coverage of the crime
characteristics of a disorganised criminal:
-average intelligence or lower
-socially immature
-sexually incompetent
-poor work history
-lives alone
-lives close to crime scene
-little interest in their crime
stages of constructing an FBI profile:
1) data assimilation
2) crime scene classification
3) crime reconstruction
4) profile generation
data assimilation:
profiler reviews the evidence (crime scene photographs etc.)
crime scene classification:
organised or disorganised
crime reconstruction:
hypothesis of the crime
(e.g. sequence of events, behaviour)
profile generation:
hypothesis of the likely offender e.g. physical characteristics
Case One
A teenage victim was attacked in the morning on a secluded path that is very rarely used. She was seized from behind, dragged into some bushes, gagged and bound with duct tape, and sexually assaulted. The path cannot be seen from nearby roads, and can only be accessed from an estate on one side. The victim had unexpectedly spent the night at a friend’s house and had not used the path before.
Case 1 - disorganised because the attack seems more random and the victim a stranger. The victim was attacked on a secluded, rarely used path - this suggests that the attack may have been spontaneous and it was by chance that the victim was there.