Forensics Flashcards
Top Down Approach
Organised Offender
Disorganised Offender
Constructing FBI Profiles
Evaluation Top Down
Bottom Up Approach
Interpersonal Coherence
Criminal Characteristics
Geographical Profiling
Forensic Awareness
Evaluation Bottom Up
Rachel Nickell
Atavistic Explanation
Lombroso (1876) crims = separate species between mod & prim humans - physical shape of head & face determine born criminal
A03 Supporting Lombroso
examined 383 dead skulls of crime contrib to criminology moved from moralistic to scientific noted facial features - heavy brow large strong jaw large ears extra fingers / toes
skulls could have included ppl w/ learning difs - may skew measurements some have physical effects on facial features
Hooton (1939)
12 yr study 10 US states w/ console of 3023 comp male prisoners 13873 argued crime behav due to bio inferiority & degeneration list of physical features indicated trim behav - sloping head, protruding, narrow jaw - rectifies no L control
Goring (1913)
looked at facial features of 3000 crims & non crims & found no evidence for facial features - L didn’t use control
Kaplan (1980)
states poor appearance linked w/ poor soc interactions (due to how look?) can bring about trim behav, poor self esteem & reluctance to conform
Genetic Explanation
specific genes for crime = candidate genes
Brunner et al (1993) analysis of Neths crime fam had genetic condition Brunner’s Syndrome = low IQ & MAOA deficiency - metabol of S (aggression) can inherit conditions that make prone to crime
Tiihonen et al (2014)
found abs in 2 genes assoc w/ violent crime = MAOA gene controls DA & S & CDH13 linked to substance abuse & attention deficit disorder
diathesis stress model genetics may effect but = triggered by environ
Crowe (1972)
adoptees bio mum w/ crib rec Vs control w/o found of bio mum had rec then 50% of children did by 18 control = 5% regardless of environ = bio predis
Christiansen (1977)
examined 3500 twin pairs in Denmark indicated degree of inheri concor = low even in MZ environ = role dif M&F twins q’s gender role
Male MZ = 35% DZ 13%
Female MZ = 21% DZ = 8% can help rule out environ
Raine (1993)
m-a 13 studies MZ = 52% DZ = 21%
Mednick (1984)
14k adoptees cram recs comp w/ bio & a p’s 13% of a p’s had rec 20% didn’t but bio p’s did 24% = both
Evaluation of Genetic Explanation
twin & fam studies don’t rule out environ - SL - adopt rectify brought up in dif environ helps see genetic effects - adopted child syndrome - bonding and attachment disorders - lying, stealing, defiance of auth and violence
Brunner et al (1993)
= grit for using case study unique to small num - lacks gen = dif to apply to other fans
Nature/ Nurture Genetics
evidence in neural and some genetics = nature nurture should not be ignored & interaction overlooked = implications for CJS if not responsible can’t punish
Gender & Crime
crim behav m likely to be male Wilson & Daly (1985) = evol bc = risky = attractive - risky behav used to mean m food also looked at US homicide & found nearly all = Male single unemployed - trying to boost soc status & get mate
Brain Structure Abnormalities: Limbic System
m primitive area assoc w/ emotion
amygdala linked w/ agres Potegal et al (1996) stimed hams A and inc agres
Blair & Mitchel looked at role in psychos and suggests abnor/dsyfunc in structure may = cause - involv in emotion and empathy process
Brain Structure Abnormalities: Pre-Frontal Cortex
regulates emo behav
brain imaging studies individuals w/ APD have lower activity
Brain Structure Abnormalities: Mirror Neurons
control empathy reaction = switched on & off in APD only when asked to emp w/ someone could choose
Brain Structure Abnormalities: Frontal Lobe
inc func soc behav & planing
Brower & Price (2001) linked damage to dysfunc & violent crime
Kandel & Freed (1989) damage & AS behav tendency to = emo unstable fail to consider cons of actions & adapt behav to external cues = result of impaired func
Raine et al (1997) use of PET scans to assess brain activity of ptps (41 m’s) found reduced rates in many brain areas inclu corpus callosum, amygdala & hippocampus
Biochemical Imbalances
serotonin thought to inhib agres respon to stem dec levels assoc w/ inc impul agres violent suicide
DA limbic system act = pleasure - greater activity = inc pleasure inc addiction = implic of behav linked to addition - substance abuse - crime m likely to be linked to dopaminergic pathway
Mann et al (1990)
drugs that dec S inc hostility & agres in m’s (not f’s)
Moir & Jessel (1995)
elite num of humans & animal studies link low levels of S & agres w/ inc crim
Buitelataar (2002)
Juvi delinqs give DA antag dec levels of agres
Coupis (2008)
some individuals who engage in certain behav may exper inc DA and so seek exper again
Higley et al (1996)
testosterone levels = + correl w/ agres not impul zero = - correl w/ impul & extreme behav make and non human primates bio chemistry levels affect behav
Serbo & Raire (1993)
m-a 29 pieces of research into antisocial ppl all dec S levels
Krakowsk (2003)
argued whilst S implicated in lack of impul control & violence makes causal link hard proposed depends on individual diff & soc context
Bio chem = reductionist
looks at neurotrans / brain regions might contrib but may overlook environ etc but allows m straight forward thinking = easier to detangle all pos explans & interactions & invest sci - overlooking factors = essen for good scientific practice
Neurochem = Over simplistic
links ab Neurotrans levels & offending behav = violent & agres but not all crime is - lacks complex for burglary / fraud
Correlational Problems
no clear cause & effect e.g., dec S could E/C
brain structure abs - Raine et al (1977) cause / environ result m likely to = crim highlights complex of bio & behav rela
Free Will
= deterministic internal factors can’t hold ppl accountable
Validity of Biochem
neurotrans studies on animals inc agres in mice w/ inc neurotrans levels doesn’t mean auto extrapolate to humans
Real Life Application Bio chem
explan = relevant to everyday behav may lead to often behav in some circumstances may underpin MIs & this inc crim behav than just bio chems
Extraversion / Introversion
Es: need excitement enjoy parties & company = optimistic & impulsive can easily lose temper = agres & unreliable = underaroused seek sstim less likely to consider cons enjoy crime thrill
Is: reserved dislike change & noise = reliable higher morals enjoy own company think b4 act
Neuroticism / Stable
Psychoticism
Eysenck & Gudjonsson (1979)
Eysenck (1977)
Bartol (1978)
Blackwell (1993)