LO2 and LO3: Theories of Criminality and evaluating them Flashcards
Name the 4 Biological theories
XYY, Twin & adoption studies, Sheldon Stomatotype and Lombrosso avatism.
name 3 Individualistic theorys
Eysenck Personality theory, Freud Personality theory, Bowlby Maternal deprivation theory, Social learning theory, Operant conditioning
Name 3 Sociological theories
Marxism, Functionalism, Labelling, Left and right realism.
Define Atavism
Criminals are primitive, pre-social and savages. Inheritable
what was Lombroso’s (Atavism) Study
he examined facial and cranial fetures of 380 dead criminals and 3840 living criminals. Found 40% of characteristics could be accounted for by avatistism. he realised you could tell what type of crime someone may commit
- Thieves have flatterned noses
- Sex offenders have thick lips protruding ears
-murderers have bloodshot eyes, curly hair and an “aquiline” noses like the beak of an eagle
what where the two types of criminals Lombroso found
Insane - intellectualy and morally challenged
Epileptic - commits a crime during a seizure
what are the strengths and weaknesses of Lombroso’s Atavism theory
Strengths:
led to further development of criminality
responsible for developing newer theories which have sound scientific evidance
Weaknesses:
Lacks scientific evidence for support
Although many features are common among criminals
what are the 3 somatotypes
Ectomorphs had “thin and fine bones” and were said to have a more “cerebrotonic” personality - introverted
Mesomorphs who were square and more muscular, were said to have a tendency towards a “somotonic” personality - active and aggressive
Endomorphs, who are rounded and soft, were said to have a tendency toward a “viscerotonic” personality - relaxed, comfortable, and extroverted
which of the somatotypes is likely to be a criminal and why
Mesomorphs are the most likely to engage in crime, or be attracted by risk taking. Their physiques and assertiveness are important in crime.
what are the strengths and weaknesses of Sheldon’s somatotypes
strength
the sample size for his study was large, and the comparisons between criminals and non-criminals was therefore justified. The addition of temperament to his theory also provided some extra justification.
Weakness
it relied solely on biological factors (body shape), which is’t proven scientifically. Reliability can also be brought into question, as his theory relied upon only his judgements to rate individual body shapes.
what are the two types of twins
Dizygotic Twins - born at the same time but come from 2 separate eggs and share 50% of the DNA
Monozygotic Twins - born at the same time but come from the same egg and share 100% of the DNA (Identical)
what is the concordance rate
The probability (as a percentage) that if one twin has a characteristic the other twin will have the characteristic.
what was mednicks adoption studies
Studied 14000 adopted male children in denmark from 1942 to 47
- Found a high proportion of boys with criminal conviction had biological parents with convictions
- 14.7% had a criminal record if their adoptive parents had one
- Suggested a strong like between criminality and genetics
what are the strengths and weaknesses of mednicks adoption studdies
Strengths:
Exposed the individuals involved to a different environment to their biological
Research wars drawn from a large sample
weaknesses:
Ethical issues
Adopted children are often placed in families resembling their biological family
what is Christenesen’s Twin studdies
investigated 3586 twin pairs born in eastern denmark between 1880 and 1910
Found a 52% concordance rate between MZ twins where Non identical twins was only 22%