Forensic Psychology (paper 3) Flashcards
What is offender profiling? What are the types?
Investigative tool employed by police when solving crimes with aim to naroow field of enquiry&list of likely suspects
Methods vary but compiling of profile will usualy inv careful scrutiny of crime scene&analysis of evidence to generate hypotheses about proabale characteristics of offender eg/age, occupation, background etc
1 TOP DOWN APPROACH (AMERICAN)
profilers start with pre-established typology&work down in order to assign offenders to 1 of 2 categories based on witness accounts&evidence from crime scene
2 BOTTOM UP APPROACH (BRITISH)
profilers work up from evidence collected from crime scene to develop hypothesis about likely characteristics, motivations&social background of offender (investigative&geographical)
What is the top down approach to offender profiling?
Originated by FBI in America which used in-depth interviews with 36 sexually motivated killers
Profilers start with pre-established typology&work down in order to assign offenders to 1 of 2 categories based on witness accounts&evidence from crime scene
Based on idea serious offenders have signature ways of working (modus operandi) that generally correlates with particular set of social&psychological characteristics-based on evidence offender classified as organised/disorganised (classifications based on pre-existing templates FBI developed&informs police investigation)
ORGANISED=shows evidence of planning (high degree of cotntrol&leave little evidence), targets victim (so have type)&tends to be socially&sexuallly competent (likely married with kids) with higher than average intelligence, operates with detached&surgical precision, in skilled job
DISORGANISED=shows little evidence of planning (little control&reflects impulsive), leaves clues&tends to be socially&sexually incompetent (history of sexual dysfunction&failed relationships) with lower than average intelligence (likely to live alone&relatively close to offence-spontaneous nature), in unskilled job/unemployed
What are the 4 steps to constructing an FBI profile?
1 DATA ASSIMILATION
profiler reviews evidence (crime scene photographs, pathology reports etc)
2 CRIME SCENE CLASSIFICATION
as organised/disorganised
3 CRIME RECONSTRCUTION
hypotheses in terms of sequence of events, behaviour of victim etc
4 PROFILE GENERATION
hypotheses related to likely offender (demographic background, physical characteristics, behaviour etc)
The top down approach to offender profiling is when profilers start with a pre-established typology&work down in order to assign offenders to 1 of 2 categories based on witness accounts&evidence from crime scene
Give 5 criticisms of the this approach
+/- Canter found evidence of distinct organised type but fails to support distinct disorganised offender
Analysed data from 100 USA murders using smallest space analysis where details of each case examined with reference to 39 characteristics thought to be typical of organised&disorganised killers
Provides some support for top down profiling approach
CA wasn’t case for disorganised offender where was no evidence for distinct disorganised type which undermines classification system as whole bc it questions validity
- Sample used to create top down profiling=too small&unrepresntative
Was developed using interviews with 36 killers in US-24=serial killers, other 11 single/double murderers
Critics suggested its not sensible to rely on self-report data with convicted killers when constructing classification system bc info they provide could be inaccurate leading to invalid classification system - Top down profiling only applies to particular crimes, particularly crime scenes revealing important details about suspect like rape, arson&cult killings
This method of profiling doesn’t help when crimes=more common eg/burglary&destruction of property where crime scenes reveal little info about offender
Reduces ability for this method of profiling to be used to identify criminal - Top downs based on idea behaviour remains same across situations&contexts
Eg/personality drives behviour&isn’t impacted by external factors-several critics argue this is incorrect&behaviours driven by aspects other than personality which=more changeable
Reduces validity of top down profiling as might not be possible to “predict” offenders next move - Top down=too simplistic as behaviours describing organised&disorganised aren’t mutually exclusive
Eg/crime scene can have combo of organised&disorganised characteristics
Suggests top down may not be valid way to categorise offenders, has led to other researchers to propose more detailed typological models such as Holmes who said there’s 4 types of serial killer
What is the bottom up approach to offender profiling?
British model
Generate picture of offender (profilers work up from evidence collected from crime scene to develop hypothesis about likely characteristics, motivations&social background of offender=no fixed typologies)
Profile=data driven&emerges as investigator engages in deeper&more rigorous scrutiny of details of offences=more grounded in psych theory than TD
2 TECHNIQUES
1 INVESTIGATIVE PSYCOLOGY
-matches details from crime scene with statistical analysis of typical offender behaviour patterns based on psychological theory
2 GEOGRAPHICAL PROFILING
- based on principle of spatial consistency (offenders operational base&possible future offences revealed by geographical location of previous crimes)
- can be used in conjunction with psychological theory to create hypothesis about how offenders thinking as well as their modus operandi
The bottom up approach is where profilers work up from evidence collected from crime scene to develop hypothesis about likely characteristics, motivations&social background of offender. There’s 2 techniques used in the bottom up approach to offender profiling, what’s included in investigative profiling as 1 of the techniques?
- matches details from crime scene with statistical analysis of typical offender behaviour patterns based on psychological theory
- aims to establish patterns f behaviour likely to occur across crime scenes, helping develop statistical data base which then acts as baseline for comparison (specific details about offence/related offences then matched against to reveal important details about offender, personality, history, family background etc which may reveal whether series if offences are linked in that they’re likely to’ve been committed by same person)
3 main features of this approach
- Interpersonal coherence (way offender behaves at scene inc. how they interact with victim, may reflect behaviour in more everyday situations)
- Time&place (may indicate where offenders living/working)
- Forensic awareness (certain behaviours might reveal awareness of police techniques&past experience)
The bottom up approach is where profilers work up from evidence collected from crime scene to develop hypothesis about likely characteristics, motivations&social background of offender.
There’s 2 techniques used in the bottom up approach to offender profiling, what’s included in geographical profiling as 1 of the techniques?
- based on principle of spatial consistency (offenders operational base&possible future offences revealed by geographical location of previous crimes)
- can be used in conjunction with psychological theory to create hypothesis about how offenders thinking as well as their modus operandi
- assumption=repeat offenders will restrict “work” to geographical areas they’re familiar with so understanding spatial pattern of behaviour provides “centre of gravity” likely to inc. offender’s base&”jeopardy surface” aka where next likely to strike
Canters circle theory proposed 2 models of offender behaviour:
- Marauder (operates in close proximity to home base)
- Commuter (likely to’ve travelled distance away from usual residence)
- Spatial decision making of offender can offer investigative team important insight into nature of offence (planned/opportunistic)&features like mode of transport, employment etc
The bottom up approach is where profilers work up from evidence collected from crime scene to develop hypothesis about likely characteristics, motivations&social background of offender.
Outline 3 advantages
Points could also be used to compare bottom up and top down approach to profiling
+ Evidence to support geographical profiling
Ludrigan&Canter collated info from 120 murder cases involving serial killers, location of each body disposal site was diff direction from previous, creating “centre of gravity”, indicating offenders base
Supports Canters claim spatial info=key factor in determining base of an offender
Could therefore be assumed this=valid method of offender profiling
+ Bottom up approach=more scientific&objective than top down
Due to advances in artificial intelligence, investigators can manipulate geographical, biographical&psycholgical data quickly to produce insights that assist in investigation
Meaning bottom up=more grounded in evidence&psychologial theory&less driven by speculations&”hunches”
Impact of this should be offenders=more quickly&accurately identified in investigations
+ Bottom up can be applied to wide range of offences
Eg/can be used in burglary&theft as well as more serious offences like murder&rape
Meaning its better than top down which can only explain limited no. crimes like rape, arson&cult killings
As result, bottom up profiling may be a more effective method of offender profiling
List 3 similarities and 2 differences between top down and bottom up approach to offender profiling
SIMILARITIES
1 Use info from crime scene to make profile
2 Both used to narrow field of suspects
3 Both assume pattern in offenders behaviour, which isn’t always the case
DIFFERENCES
1 Bottom up=more scientific&objective (relies on statistical data) &doesn’t rely on intution&hunches like top down so is more accurate
2 Bottom up originated in Britain by Duffy, top down originated in America by FBI
The bottom up approach is where profilers work up from evidence collected from crime scene to develop hypothesis about likely characteristics, motivations&social background of offender.
Outline 2 disadvantages
Points could also be used to compare bottom up and top down approach to profiling
- Is some problems with offender profiling
In case of Rachel Nickells death, original suspect had been ruled out of enquiry at early stage bc was several inches taller than profile created based on bottom up approach to offender profiling
Suggests profiling may lead investigation in wrong direction if considered too literally
Therefore bottom up offender profiling may only be appropriate in helping narrow down list of potential offenders, rather than actually identifying assailant - Studies examining effectiveness of offender profiling have produced mixed results
Copson surveyed 48 police forces&found advice provided by profiler was judged to be “useful” in 83% of cases, but only led to accurate identification of offender in 3%
Means there’s more significant issues with reliabiity&accuracy of bottom up offender profiling
As result, may not be appropriate tool to use when identifying offenders
In the cognitive explanation as 1/4 psycholgiacl explanatioons for offending behaviour, theres level of moral reasoning by Kohlberg
Outline the 3 levels in Kohelbergs model
LEVEL 1 = PRE CONVENTIONAL MORALITY
Stage 1 Punishemnt orientation (rules obeyed to avoid punishment)
Stage 2 Personal gain (rules obeyed for personal gain)
LEVEL 2 = CONVENTIONAL MORALITY
Stage 3 Good boy/Good girl orientation (rules obeyed for approval)
Stage 4 Maintenance of social order (rules obeyed to maintain social order)
LEVEL 3 POST CONVENTIONAL MORALITY
Stage 5 Morality of contract&individual rights (rules challenged if they infringe on rights of others)
Stage 6 Morality of conscience (individuals have personal set of ethical principles)
As 1/4 psychological explantions for offending, explain who developed the differential association theory and on what basis
Proposes individuals learn values, attitudes, techniques&motives for offending through association&interction with diff people eg/person might associated with people whove very neg ttitudes to crime/other mayve been exposed to moe poitive attitudes
SCIENTIFIC BASIS (Sutherland set self task of developing set of scienific principles that could explain all types of offending aka conditions said to cause crime should be present when crime=presen&absent when crime=absent, theory was&is designed to discriminate between individuals who become offenders&those who dont, wahtever social/ethnic background)
OFFENDING AS LEARNED BEHAVIOUR
SOCIALISATION IN PRISON
As 1/4 psychological explantions for offending, the DA theory proposes individuals learn values, attitudes, techniques&motives for offending through association&interction with diff people eg/person might associated with people whove very neg ttitudes to crime/other mayve been exposed to moe poitive attitudes
Explain whats isnvolved in the differential association theory
OFFENDING AS LEARNED BEHAVIOUR (OB may be acquired in same way as any other behaviour where learning occurs through interactions with signif others who child values most&spends most time with
So should be possible to predict how likely it is individual will commit offences, to do this, need to know frequency, intensity&duration of exposure to deviant&non-deviant norms&values
Offending arises from 2 factors: LEARNING ATTITUDES (when persons socialised into group theyll be exposed to values&attitudes to law=pro crime&anti crime, Sutherland argues if no. pro criminal attitudes persoanl acquires outweighs no. anti, will go on to offend) LEARNING TECHNIQUES (offender may also learn particular techniques for committing offences, might inc how to break law etc)
DA is 1/4 psychological explanations for offening
Outline a study which supports the differential association theory as a psychological explanation of offending behaviour
FARRINGTON ET AL
- Longitudinal survey of development of offending&antisocial behaviour in 411 boys
- Study began when boys=8 in 1961&all livig in deprived inner city area of south London
- Of sampled, 41% convicted of at least 1 offence between age of 10-50 (avg convicted career lasting from 19-28&inc 5 convictions)
-Most important childhood risk factors at age 8-10 for later offending were measures of family criminality, risk taking, low school attainment, poverty&poor parenting
Small prop of participants were efined as chronc offenders bc accounted for about half of all officially recorded offences in this study
Sutherland suggested response of family=crucial in determining whether indvidual=likely to engage in offending, if familys seen to support offending activity, making it seem legitimate&reasonable then this becomes major influence on childs value system
But fact offending behaviour often seems to run in families could also be interpreted as supporting other explanations eg/biological theories eg/particualr combo of genes prediposes person to offend=inherited
The DA theory proposes individuals learn values, attitudes, techniques&motives for offending through association&interction with diff people eg/person might associated with people whove very neg ttitudes to crime/other mayve been exposed to moe poitive attitudes
Evaluate this explanation
2 advantages
+ DA theory was able to shift focus of offending explanations
Successful in moving emphasis from early biological accounts of offending eg/Lombrosos atavistic&from theories explaining offendnig as being product of individual weakness, DA draws attention to fact deviant social circumstances&enviros may be more to blame for offending than deviant people
This approach=more desirable bc it offers more realistic solution to problem of offending instead of biological solution/punishment
CA it runs risk of stereotyping individuals who come from impoverished, crime ridden backgrounds as unavoidably offenders eventhough S took great care to point out that offending should be considered on individual casebycase bias but theory tends to suggests exposure to pro crime vaules=sufficient to produce offending in those exposed to it
So ignores fact people may choose not to offend despite such influences
+ Good explanataory power as can acount for offending within all sectors of society
While Sutherland recognised some types of offence eg/burglary, may be clustered within cerain inner city WC communities, its also case some offences=clustered amongst affluent groups in society, S was esp interested in white collar crime&how this may be feature of MC social groups who share eviant norms&values
Shows that its not just lower classes who commit offences&principles of DA can be used to explain all offences