Please enable JavaScript.
Coggle requires JavaScript to display documents.
DESCRIBE BIOLOGICAL THEORIES - Coggle Diagram
DESCRIBE BIOLOGICAL THEORIES
LOMBROSO
father of modern criminology
atavism
bloodshot eyes, thick lips, flattened noses
low intelligence in women
studied 383 dead skulls, 3839 lvinig
offender profiling
physiological/genetic
SHELDON
somatypes
ectomorph
endomorph
mesomorph
breeding poultry & dogs
college students identifying delinquents
control group
XYY SYNDROME
hypertelorism (increased distance between limbs - eg: eyes)
1 in 1000 males
jacob et al (1956)
found higher proportion of XYY in prison populations (15 in 1000)
only looked at inmates of psych hospital
Study - John Wayne Gacey
killed & tourtured 38 boys
Stockholm (2012)
significant increase in numbers of convictions in XYY group than control of XY group
TWIN & ADOPTION STUDIES
adoption studies
Jeff Landrigan
nature vs nurture
genetics
concordance
biological family
adoptive parents
environmental factors
twin studies
monozygotic
dizygotic
concordance rates
Christiansen (1977)
studied over 3,500 twin pairs & looked at concordance rates of criminal behaviour
male MZ - 35%
male DZ - 13%
female MZ - 21%
female DZ - 8%
inheritance
Johannes et al (1929)
found 10/13 MZ twins had served time in prison compared to 2/17 DZ twins