Lecture 7 Flashcards
BIA only - unsure if need CA (39 cards)
what is the myth about what BIA do
- Most depiction based pn American models
- Only x1 BIA in the uk actually used to be a police officer
- TV shows say that they do everything + with a quick turnover
o In reality senior investigator main person in saying what people do, everyone reports to them
o Multidisciplinary team
Only one BIA
Also BI, forensic analyssr, forensic psychologist
what is the reality about what BIAs do - ainsworth
- “At the heart of most profiling is the belief that characteristics of an offender can be deducted by a careful and considered examination of the characteristics of the offence”
what is the reality about what BIAs do
- Cannot identify who committed the crime, can suggest probable characteristics an offender may possess
- Use data bases of offenders picture of what type of people police for look for – to tell us wht type of person committed the offense
- Use data from the crime scene
- BIA can’t act as an expert witness, can only assist by providing info which can assist their search not 100% who did it
what types of psychology is involved in forensic psych
- Forensic psychology applies other areas of psychology to the forensic domain and criminal justice system
o Eg cognitive, developmental, social
describe the history behind : EWT, aggression, personality, social interactions, scripts
Offenders may have scripts in their head about how they ant the murder/ rape to occur
Doesn’t always fo to plan
Can use what went wrong and right to identify , by default, what behvaiours occur after this
Gives us ideas of what type of person they are
describe the history behind : Dr Brussel 1956
o Argue the 1st type of BIA
Debate over whether he had ‘special powers’ or was influential
• He came up with ideas of social classes
• Originally got it right then not so much
describe the history behind : FBI
o Set up a BA analysis unit + researched the background behind it
o Quantico
Investigated the dichotomy of organised/disorganised crimes and their set of features
describe the history behind : experience
o Paul + david canter –. Gave advice on investigations in the UK
o Still an academic debate about experience vs research
how did BIA move on fom profiling
- Not just profiling, assist investigative decision making
- Consultants from NCA invited to assist investigation
why are - Murder, rape, abduction, arson, suspicious missing persons usually the focus of BIAs
o Why focus = seriousness of offense and risk it causes
o Psychology = study of human behavior
o Robbery = not many ways to commit this
But rape/ murder etc have many variables/ decisions that offender can choose to make
• These provide clues bout the person
o Murder/ rape has the most behaviourlly rich data
why do BIAs only look at cases when the criminal is unknown
o Only use BIA when the offender is unknown (which is rare, which is why rarely used as most are done by people who are known)
what services are offered by BIAs
crime scene assessments profiling offence linkage interview stratergy media stratergy
describe what happens during a crime scene assessment
- Particularly om murder investigations
- Focus on behavioural interaction between offender and the victim
- Consider all of the possible hypothoses
o Then test the null hypos to discount them
describe what happens during a crime scene assessment; - The Interactive Offence
o Complex social interaction
o -Many factors impact upon offender
o -Offender has some control over how to re/act and characteristic re/actions remain consistent
o All have to come together for offense to occur
o Some say only thing of total control over the victim is when the offender first interacts with them
Then after that depends on how the victim acts
describe Prioritisation of persons of interest for DNA intelligence led screening
- Using features to decide what to prioritise looking for
- Swab people with the highest scores which co-oberate with the matrix, for dna
- Picture = simplistic example of how profiling developed into BI advice
what happens during offense linkage
- Difference BIA and analyst re linkage – doing in seminar BIA given set of cases – opinion whether linked, analysts IDENTIFY potential cases which are similar from a huge database of offences.
why is offence linkage used
- Telling us whether it is different offenders or the same on from offence similarities + differences
o But we know from behaviourism that we learn each time we do something so would never be the same offence each time - Can give explanations for differences eg offence 4 didn’t move to nother location, but may have already been an optimal initial locatoion compared to the other scenes
- Compare the linkage to the base rate
why are BIAs used during the interview stratergy
- Eg psychopaths = high IQ/ risk taking/ charming/ no empathy
o Won’t care about the victims and the families - Not about manipulation but about not wasting time and getting info as quick as poss
why are BIAs used duringthe media stratergy
- Give advice to the media to aid memory recall cognition
o Anchors to remind recll
o Can use significance in media to get and give out right type of info
o Wont give out height/ build as we know these are poor from recall
what are the steps to the method for BIAs
Step 1: Data Collection
Step 2: Analysis to Inference- Three Elements of Crime
Step 3: Assimilation and Action
what happens in step one for BIAs
- What is required – terms of reference
- Statements, briefing, crime scene visit
- What happened in this interaction > collection of physical evidence
o What want, what info need, when want by, cisit crime scene (ususally done at the time of day it occurred)
what is problematic about the data in step 1
o Access
o Retrospective – memory and cognitive bias’ – limited quality and quantity
o Not collected for purpose of behavioural interpretation
o Samples skewed to those worked with, caught, researched etc.
o Based on existing date (messy)
what happens in step 2 for the BIAs
- Location: type, selection-familiar, escape
- Victim: routine, risk, personality
o Why this specific victim has been selected - Offender: aggression, weapon, injuries, items missing
o Decisions that offender made
o Actual CS + routes off took to understand decisions
o Some things victim led
what 3 types of technical experience is needed in step 2 for the BIAs
clinical
statistical
research