MPA2.1 biological theories Flashcards
biological theories
defenition of biological theories
nodweddion corfforol wneud rhai yn fwy tebygol o droseddu
some tendencys or fath yn genetig or inherited - bad nature - nature vs nuture
what are the 2 biological ffisiological theories
william sheldon
lombroso
cryfderau theroy lombroso
- uni china - AI - 83% recognision (sample of 2000)
- later on - addio elfennau amgylcheddol + cymdeithasol
- bath spa uni - (butcher taylor 2007) - unattractive people more likely to be convicted guilty
weaknesses of lombrosos theroy
- syniadau hiliol - dim yn disgrifio nodweddion western - affricaniadd yn bennaf
- dim wedi cymharu hefor innocent - could have find some nodweddion yn y generalpopulation a debrisio
- astudiaethau wedyn heb profi cysyllt rhwng y wyneb a trosoddoldeb - nazisβs used to label
pwy oedd lombroso
psychologist o italy
tad troseddeg modern - positivist school
history or gair avatistic
avatus - ancestory
avatistic charecteristics by lombroso
not stable
unsociable
savages / apes (long arm theory)
degeneration
back to stone age
split in genes - something wrong in the dna
rhai nodweddion o theory lombroso
gen mawr
high cheek bones
trwyn fflat
talcen isel
breichiau hir compared i coesau
clustiau mawr
tattoos - high pain tolerance
be oedd lombroso yn galw troseddwyr
homo delinquent
be oedd llyfr lombroso
lβuomo delinquent - 1876
be oedd baisic theory lombroso
gwahaniaeth ffisiolegol rhwng troseddwyr
troseddwyr yn rhywogaeth gwahannol rhwng bodau dynol modern a cyntefig
nodweddion atafiaethol - throwbacks
be ydi dadl william sheldon
1949 - cysylltu ymddygiad troseddol yn gysylltiedig a nodweddion corfforol
4000 lluniau o ddynion or ffront blaen a ochr
dod i fyny hefo 3 somatoteip
be ydi 3 somatoteip sheldon
ectomorph
mesomorph
endomorph
ectomorph body type ac personality
tena a fragile
introverted
swil
endomorph body type ac personality
dew a meddal
cymdeithasol ac relaxed
mesomorph body type ac personality
cyhyrog a caled
ymosodl a anturus
be ydi principals o theory william sheldon
astudiaeth cydberthyniad
mesomorph - gweithgaredd treisgar +ymosodl
ectomorph lleiaf tebygol
cyhoeddwyd yn yr atlas of men 1954
cryfderau (2) astudiaeth William Sheldon
gluek a gluek - 60% o droseddwyr a welwyd yn mesomorph
troseddwyr mwyaf difrifol mwyaf tebygol yn mesomorph
gwendidau theory william sheldon (4)
- dim wedi ystyried bod maint / siap corff yn newid drost amser (personality ddim yn newid)
- dim wedi egluro pam mae rhai endo + ecto morph yn torri gyfraith
- labelu - mesomorph yn cael ei labelu - self fufilled prophecies , heddlu mwy gyliadwrus - unconscious bias
- sociological element - social class, working class more likely to have heavy job - datblygu i fod yn mesomorph
cryfderau twin studies(2)
- efeilliad MZ yn debyg - rhesymol edrych os yw crim behaviour yn debyg
- sawl astudiaeth yn cefnoir link rhwng behaviour MZ twins
gwendidau twin studies (4)
- efeilliad MZ yn cael ei trin yn fwy deby felly dylanwadu mwy ar ei gilydd
- ella amgylchedd teby oedd yn arwain dim genes
- if genetig was true link would be 100% ond 50% or less in most
- samplauβn aml yn fach
be ydir yr 2 math o twins
MZ
DZ
be ydi MZ twins
monozygotic
1 egg
100% dna shared
be ydi DZ twins
deuzygotic
2 eggs
50%
be ydi baisic theory twin studies
famillies hefo similar genes felly os criminal ene bodoli bysa fam yn rhannu
twin studies astudiaeth Christiansen 1977 (3)
astudio drost 3,500
MZ - un hefo crim llall hefo 52% chance
DZ - un hefo crim llall hefo 22% chance
twin studies astudiaeth Lange 1929
(3)
Mz cyfradd concordant llawer uwch na DZ
10 o MZ twins out of 13 wedi bod yn carchar
2 o 17 DZ twins
be ydi 2 study names o twin studies
christiansen 1977
lange 1929
adoption studies weaknesses
- aml yn placed in same environement as biological - soical class, ethinicity, area
- age of adoption important - could have already influenced
- fam info hard to find
strengths of adoption studies
- enables seperation between genes + environement
- rhesemygol - nature vs nurture yn glir
- astudiaethau i yd bron yn cefnogir theory
be ydir theory adoption studies sydd yn ish accepted
adopted children more likely o cael crim rec os bio parents hefo crim rec
pwy ydi yr case study i adoption studies
Mednick et al
1975
faint o data ydir mednick et all (adoption studies)
dros 14,000
adopted rhwng 1924-47
be oedd findings mednick et all
meibon fwy tebyg o cael crim rec if bio had
cyfradd cydgord - 20%
14% hefo crim rec os adopted parents hefo
be ydi point adoption study
cymharu troseddwyr hefo rhieni biolegol a adoptive
be ydi yr theory o adoption study
adopted child
- same environement as adopted
- same genes as biologgical
significance o theory adoption
behaviour more like bio parents
awgrymmu esboniad geneti i ymddygiad
cryfder XYY theories
- nifer sylweddol o dynion yn carchar hefo XYY (Patricia Jacobs)
- lot o scientists yn credu bod ymddygiad ymosodl yn linked a genes
weaknesses o XYY theories
- Theilgaard 1984 dynion XYY dim mwy ymosodl na XY
- anwybyddu envirnomental factors
- abnolmarwydd genetig yn gyffredin yn poblogaeth - doesnβt explain
2 researcher gwahannol XYY theory
Francis Galton 1901
Patricia Jacobs 1965
be oedd theory francis galton ( XYY)
hereditory features - talent, cymeriad, lliw llygaid
alcoholiaeth, meddwl gwan, troseddu
be ydir cysylltiad hefo XYY
XYY karyotype ac ymddygiad bygythiol
how many males have XYY
1 in every 1000
0.1%
difference in behaviour of XYY and XY
allu is a problemmau ymddygiadol
fwy bygythiol
nawr some evidence against this
be oedd sample size Patricia Jacobs
315 dynion
lle nath Patricia Jacobs neud experiment hi
ysbytu maxium secuirrty scotland 1965
be oedd canlyniadau Patrica Jacobs
1 in every 28 - 4%
40 times more likely than general pop!!!
how many men with XYY go undiagnosed
88%
pwy ydir case study o brain injury
Phineas Gage
what happend to phinease gage
railwayworker
where did gage get injured
labed flaen chwith yr ymenydd
effaith ar personality gage
antisocial
defnyddio iaith anweddus
anghwrtais + lying
astudiaethau arall linked to brain injury
carchorion fwy tebyg o fod wedi cael anaf ir pen
McIsacc et all 2016
Aaron Hernandez NFL (2013)
effaith diweddar ar brain injuries
mwy o sylw gan bod technoleg yn gwella
Brain Injury Case ar brain working
Raine, Buchsbaum a La Casse
PET sgans cymharu hefo normal a criminals
different parts of brain activity
violent prisoners brain works differently
testestorone
- corolation cryf iawn
- effeithio low and high producing
- testestorone peak + prisoner
eostrogen
PMT ar ol cael babi wedi cael ei derbyn fel esgys yn llys
Be ydir effaith cymryd testestorone ychwannegol?
life expectancy dec
suicide inc
car crash inc
heart disease inc
what does testestorone do to the body
suppresses immune system
how many times more likely are men to kill
10
why do men kill more often
subconsciously to get rid of competition
what are high seretonin rich food
wyau
nuts + seeds
turkey (poultry)
soy foods
cheese
seaweed
what is low level of seretonin linked to
criminal behaviour
depression
what does depression do
arafu yr ymenydd
experiment seretonin
29 antisocial kids - i gyd hefo low or sample
be mae seretonin yn neud
hormone + neurotransmitter
pam mae seretonin yn used fatha happy drug
rheoli mood
what can you find in food with high protein levels
tryptoffan
be mae tryptoffan yn neud
codi lefel seretonin yr brain