Forensic Psychology Flashcards

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1
Q

Who proposed the atavistic theory to offending

A

Cesare Lombroso

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2
Q

Outline the atavistic theory to offending

A

Criminals have different characteristics to non criminals
Including sloping brows and prominent jaws.
Criminals can be classified in different subtypes of characteristics. Murders have curly hair

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3
Q

Why does the atavistic theory state criminals have different characteristics to non criminals

A

Lombroso stated this was due to a more primitive stage in evolution

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4
Q

Who proposed the somatotype theory of offending

A

William Sheldon

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5
Q

Name the three somatotypes and their corresponding characteristics

A

Endomorphs are fat and soft they are social
Ectomorphs are thin and fragile they have low self esteem
Mesomorphs are criminals. They are aggressive, callous and uncaring of others feelings

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6
Q

Outline a study which investigated the somatotype theory to offending

A

Sheldon compared male delinquents and college students using a rating scale out of 7. Rating given according to body type and average taken.
Sheldon found that delinquents were significantly more mesomorphic with an average 5.4 rating.

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7
Q

What conclusions can be drawn from Sheldon’s comparative study of delinquents and non-delinquents

A

Theory that “mesomorphic individuals are more prone to aggressive and criminal behaviour” is supported.

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8
Q

What are the two physiological theories of offending

A

Atavistic and somatotype theory

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9
Q

Criticisms of Lombroso’s theory

A
  • didn’t compare criminals to non criminals
  • sample consisted of individuals with psychological disorders
  • Goring’s study comparing criminals and non criminals found no significant difference in the physical features
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10
Q

Strengths of Lombroso’s theory

A

Moved explanation of criminality into scientific realm and away from wickedness

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11
Q

Criticisms of Sheldon’s theory

A
  • Cortes and Gatti argued his classification of the somatotypes was unreliable
  • Sutherland: sheldon failed to use the legal criteria for defining delinquents
    When study repeated using legal definition, association between delinquency and mesomorphic body type was no longer present
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12
Q

Other explanations for a link between mesomorphic body type and delinquency

A
  • mesomorphs learn from early the only way to get what they want is to behave in an aggressive manner
  • muscular body types attractive to gang members as they are perceived to be more successful at crime
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13
Q

Strength of Sheldons theory

A

More scientific explanation

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14
Q

Why are twin studies used in explaining criminal behaviour

A

If one monozygotic twin displays aggressive and criminal behaviour as well as the other twin, then that behaviour must be genetic/innate

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15
Q

Outline Lange findings

A

Monozygotic twins showed a much higher degree of concordance that dizygotic twins for criminal behaviour

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16
Q

Outline a study which investigated twin concordance rates for criminal behaviour

A

Christiansen studies 3500 twin pairs from Danish islands
Found in males: 35% concordance for mz and 13% for dz
Found in females: 21% concordance for mz and 8% for dz

17
Q

Evaluation of twin studies

A
  • concordance rates in studies are low indicating environmental influences
  • concordance could be due to mz twins sharing the same environment and therefore being treated the same, whereas dz twins tend not to
18
Q

Why are adoption studies used in explaining criminal behaviour

A

Allows comparison of criminal with both biological and adoptive parents
Child more similar to biological parents, genetic basis of criminality suggested

19
Q

Outline Crowe’s findings for adoption study

A

50 percent of children in a sample of adopted children whose biological mothers had criminal records, had criminal records themselves by age 18

20
Q

Outline findings by Hutchings and Mednick

A

If both biological and adoptive fathers had criminal records, 36.2 percent of sons also became criminals

  • only biological father 21.4 percent
  • only adoptive father 11.5 percent
  • neither 10.5 percent
21
Q

What conclusions were made from Hutchings and mednicks study

A

Genetic factors clearly play a role in influencing criminal behaviour but environmental influences cannot be neglected

22
Q

Evaluation of adoption studies

A
  • adopted children placed in similar environments to that of their biological parents
  • children adopted at late ages. Criminal behaviour could be due to early life experiences
23
Q

What is the id

A

Id is governed by the pleasure principle and seeks instant gratification of biological urges

24
Q

What happens if is is prevented from fulfilling its urges

A

Aggressive tendencies emerge

25
Q

According to Freud, what re humans

A

Humans are antisocial beings driven by their own needs and urges even if these conflict with other people in society

26
Q

What is the ego

A

Ego is governed by the reality principle and seeks to consciously fulfil the demands of the id, in relation to the constraints and rules imposed by society

27
Q

What is the superego

A

Superego is governed by the morality principle and compromises of two systems

28
Q

What are the two systems that make up the superego

A
  • Conscience made up of moral rules

- Ego-ideal which is what the individual aspires to be