Forensic Psychology Flashcards
What two sections is the top down approach separated in?
Organised and disorganised offenders
What is the top down approach?
The American approach= profilers created pre existing categories of offender types
Organised = plan, prepare, tidy, high intelligence
Disorganised = messy, evidence, low intelligence
Give one research of the top down approach that is also a strength (A03)
Ressler = created definitions of organised and disorganised offenders using interviews with real serial killers.
Classified 24 as organised and 12 as disorganised suggesting there are distinct “types” of offender
What is are two limitations of the top down approach?
- Effectiveness is difficult to assess, it’s never used in isolation, so it can be difficult to identify how much the profile contribute.
- The bottom up approach, takes into account geographical factors.
What is the bottom up approach?
Canter -
British approach, The aim is to generate a profile of the offender through analysis of the crime scene.
Investigative psychology = matches details of the scene with statistical analysis based on psychological theory.
Geographical profiling = an offenders possible future offences are revealed by the location of their previous.
What two sections is the bottom up approach broken into?
Investigative psychology & Geographical profiling
What are two strengths of the bottom up approach?
- Generalisable, Geographical profiling helps locate many different types of crime e.g. burglars, serial killers, kidnappings. (canter used john Duffy)
- Uses statistical analysis from published research, seen as more scientific than top down
What is one limitation of the bottom up approach?
- Doesn’t prepare for Statistically abnormal offenders (ones that don’t fit profiles based on previous offenders)
Who proposed the atavistic form theory for the historical approach for offending ?
Lombroso
What does the atavistic form theory consist of?
Lombroso proposed a theory that criminals were “genetic throwbacks” a primitive subspecies who were biologically different from non criminals.
- Criminality is innate and those with it have certain physical characteristics
What are the physical characteristics of atavistic form?
Dark skin, strong jaw, high cheekbones.
Murderers = curly hair, long ears
Sexual deviants = swollen fleshy lips,
Give one strength of atavistic form
Lombrosos work was conducted with careful measurements, making a legacy for more scientific approaches to criminality.
Give 2 limitations of Lombrosos research
- Racism, atavistic form makes a lot of biological features that are Afrocentric (list features)
- Self fulfilling prophecy, it may not be biological but instead these people are rejected from society for their features so turn to crime
What is the genetic explanation for offending?
-Criminals inherit genes that predispose them to crime
What is the adoption study for genetic explanations of crime?
Crowe = found that adopted children who’s biological mother had a criminal record had a 50% risk of having a criminal record by 18
Whereas those who are adopted without a criminal biological mother on had a 5% risk
What do candidate genes show in genetic explanations for offending?
Those with the MAOA gene ( regulates serotonin in the brain linked to aggressive behaviour) are linked to high levels of criminality
What does the genetic explanation consist of (sections)
adoption studies
Candidate genes
Diathesis stress model
What does the diathesis stress model say in genetic explanations?
Criminality is linked to having a criminal gene and also a stress trigger e.g dysfunctional upbringing
Who is the researcher for pre frontal cortex in neural explanations and what does she say?
Raine = individuals with anti social personalities have reduced activity in the prefrontal cortex ( emotional regulator)
What do mirror neurons suggest in neural explanations for offending?
-Mirror neurons control empathy
-Offenders with APD can switch their emotions off and on
What is one strength of genetic explanations for offending?
Adoption studies allow the research for nature v nurture, as crowes research shows both had no contact with the biological parent.
What are two limitations of genetic and neural explanations for offending (biological)
Reductionist, valid understanding would take into account other factors such as drug abuse, mental illness, abuse in childhood
Biologically deterministic, doesn’t take into account free will, takes the responsibility off the perpetrator
What is the basis of eyesencks theory in psychological explanations?
Proposed behaviour could be represented with
Introvert - extravert
Neurotic - stable
Psychoticism- sociability
What is the biological basis of eyesencks theory? (3 dimensions)
Extraverts= have under aroused nervous systems so constantly seek stimulation and risk
Neurotics = high level of reactivity in sympathetic nervous system so respond quickly to situations of threat (fight or flight)
Psychotics = higher levels of testosterone so are prone to aggression
How did eyesenck measure criminality ?
A questionnaire, which locates people along the E,N,P dimensions to determine their type.
What is one strength of eyesencks theory?
Eyesencks offers a way to measure criminal personalities and how they differ from the general population