Forensic Psychology 🤧 Flashcards
Paper 3
what is the aim of offender profiling?
- to narrow down the list of likely suspects
- generate hypotheses about characteristics of offender
what are the two approaches to offender profiling?
- top down approach (American)
- bottom up approach (UK)
when did the top down approach originate?
- 1970s by FBI
how did top down approach start?
- gathered data from in depth interviews with 36 sexually motivated murderers including Ted Bundy and Charles Manson
- concluded data could be categorised into organised or disorganised crimes
- used to predict characteristics used to find the offender
what are the types of murder most likely to be carried out by an organised offender (top down approach)?
- planned crime
- victim specifically targeted
- leaves few clues
- body transported from scene of crime
what are the types of murder most likely to be carried out by a disorganised offender (top down approach)?
- unplanned crime
- little attempt to hide evidence at crime scene
- random victim
- sexually sadistic acts performed post death
what are the likely characteristics of an organised offender (top down approach)?
- generally high IQ
- socially/ sexually competent
- usually living with a partner
- confident and attractive
what are the likely characteristics of a disorganised offender (top down approach)?
- lives alone near crime scene
- sexually inadequate
- severe forms of mental illness
- confused and distressed
what are the stages of conducting an FBI profile?
- data assimilation
- crime scene classification (organised or disorganised)
- crime reconstruction
- profile generation
what research support is there for distinct organised category of offenders (top down approach)?
- Canter et al conducted analysis of 100 US murders, each committed by a different serial killer
- technique called smallest space analysis was used to assess co-occurrence of 39 aspects of serial killings which matched FBI’s typology (good validity)
what is a counterpoint to the research support for organised category of offenders (top down approach)?
- organised and disorganised types are not mutually exclusive (variety of combinations)
- Godwin argues that it is difficult to classify killers as one or the other
- killer may have multiple contrasting characteristics ie. higher intelligence but commits a spontaneous murder leaving victims body at the crime scene
- organised disorganised typology is more of a continuum
what limitation is there for top down approach for profiling?
flawed evidence on which it is based
- FBI profiling was developed in interviews with 36 murderers in US, 25 were serial killers
- at the end of the process 24 were classified as organised and 12 were disorganised
- Canter argued sample was poor (wasn’t random or large and consisted of very few different kinds of offenders)
- no standard set of questions so each interview was different and therefore not really comparable
- does not have a sound, scientific based
what is another name for the bottom up approach?
- data driven approach!
where is the bottom up approach based?
- UK
according to the bottom up approach, how are profiles created?
- in terms of characteristics, social background and routine behaviour
- through systematic analysis of evidence at the crime scene
what are the two sections of the bottom up approach?
- investigative psychology
- geographical profiling
what is investigative psychology and who was it developed by (bottom up approach)?
- David Canter
- uses psychological theory and statistical procedures to analyse crime scene evidence
- way a criminal behaves during a crime mirrors how they behave normally, so patterns will be revealed about their lifestyle when analysing behaviour during an offence
what is geographical profiling (bottom up approach)?
- concerned with where rather than who
- analyses locations of connected series of crimes and considers where they were committed, spatial relationships between different crime scenes and how they might relate to an offenders place of residence
what are the 3 main parts of investigative psychology (bottom up approach)?
- interpersonal coherence
- forensic awareness
- smallest space analysis
what is interpersonal coherence (bottom up approach)?
- consistent behaviour so links can be made between crimes
what is forensic awareness (bottom up approach)?
- offenders have awareness of police techniques and past experiences of crime
- ie. may cover up fingerprints
what is smallest space analysis (bottom up approach)?
- statistical technique
- uses analysis to find correlating patterns of behaviour
- used by Canter and Salfati (found 3 themes)
what are the 3 themes Canter and Salfati found for smallest space analysis (bottom up approach)?
- instrumental opportunistic
- instrumental cognitive
- expressive impulsive
what does instrumental opportunistic mean when referencing smallest space analysis (bottom up approach)?
- commit a crime to obtain a goal
- relatively easy/ simple