Unit 2 criminal behaviour theories


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  • this is an accurate and straight to the point presentation of virtually all the known theories of the origin of human aggression. Good work!
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  • Temperament is that aspect of our personalities that is genetically based, inborn, there from birth or even before. That does not mean that a temperament theory says we don't also have aspects of our personality that are learned, it's just that Eysenck focused on "nature," and left "nurture" to other theorists.
  • stable extraverts (sanguine qualities such as - outgoing, talkative, responsive, easygoing, lively, carefree, leadership)
    unstable extraverts (choleric qualities such as - touchy, restless, excitable, changeable, impulsive, irresponsible)
    stable introverts (phlegmatic qualities such as - calm, even-tempered, reliable, controlled, peaceful, thoughtful, careful, passive)
    unstable introverts (melancholic qualities such as - quiet, reserved, pessimistic, sober, rigid, anxious, moody).
  • -enjoy pranks and practical jokes, risky sports, loud, upbeat music, hallucinogenic drugs
    Labato (2000) – study found that extraverts are more likely to use dramatic, powerful firearms in the commission of crimes than introverts who would prefer less dramatic weapons like knives.
  • Hasn’t received the same amount of research but is hypothesized to be important throughout the lifespan (as opposed to neuroticism that is important more in the later stages).
  • Unit 2 criminal behaviour theories

    1. 1. Theories of Criminal Behaviour
    2. 2. Biological Roots of Criminal Behavior
    3. 3. Major Principles of Biological Theories    The brain is the organ of the mind and the locus of personality The basic determinants of human behavior are constitutionally or genetically based Observed gender and racial differences in rates and types of criminality may be at least partially the result of biological differences between the sexes and/or between racially distinct groups
    4. 4. Major Principles of Biological Theories    The basic determinants of human behavior may be passed on from generation to generation Much of human conduct is fundamentally rooted in instinctive behavioral responses characteristic of biological organisms everywhere The interplay between heredity, biology, and the social environment provides the nexus for any realistic consideration of crime causation
    5. 5. Early Biological Theories   Lombroso in 1876 argued that the criminal is a separate species, a species that is between modern and primitive humans. He argued that the physical shape of the head and face determined the "born criminal".
    6. 6. Early Biological Theories  Lombroso studied and measured the bodies of executed and deceased offenders as well as examining living inmates to locate physical differences or abnormalities Claimed to have found a variety of bodily features predictive of criminal behavior  Long arms, large teeth, ears lacking lobes, lots of body hair  Also identified characteristics of particular types of offenders 
    7. 7. Early Biological Theories  Constitutional Theories  William Sheldon Used body measurement techniques to connect body type with personality and outlined four basic body types and associated temperaments and personalities
    8. 8. Body types  1. 2. 3.  people could be classified into three body shapes, which correspond with three different personality types. endomorphic (fat and soft) tend to be sociable and relaxed. ectomorphic (thin and fragile) are introverted and restrained mesomorphic (muscular and hard) tend to be aggressive and adventurous. Sheldon, using a correlational study, found that many convicts were mesomorphic, and they were least likely to be ectomorphic
    9. 9. Endomorph, Mesomorph, Ectomorph,
    10. 10. Modern Biological Theories Biochemical (diet, hypoglycemia, hormones, environmental exposure)  Neurophysiological (brain dysfunction)  Evolutionary theories 
    11. 11. Modern Biological Theories    Hormones and criminality  Testosterone  Male sex hormone linked to aggression  Research has shown a relationship between high blood testosterone levels and increase male aggression  Low brain levels of serotonin Genetics and Crime: XYY Supermale  Humans have 23 pairs of chromosomes  The last pair determines gender  Males: XY pair  Females: XX pair  A study of Scottish prisoners found that a small number had an XYY chromosome.These were identified as potentially violent and labeled “supermale” Criminal Families  criminal families appeared to show criminal tendencies through several generations
    12. 12. Modern Biological Theories  Weather and Crime  Temperature is the only weather variable consistently and reliably related to crime  Positive correlation between temperature and violent crime   Moderated by factors such as time of day, day of week and season. Cohn and Rotton have found temperature to be related to crimes such as assault, property offenses, domestic violence and disorderly conduct Chemical and environmental precursors of crime (nutrition, eating habits, and environmental contaminants related to violent and/or disruptive behavior)
    13. 13. Psychological approach to the study of crime
    14. 14. Psychological Perspectives on Criminality
    15. 15. Psychoanalytic Theory Sigmund Freud (1856–1939): One can understand human behavior best by examining early childhood experiences.  Criminality is linked to guilt feelings (unresolved oedipal and Electra complexes). 
    16. 16. Sigmund Freud (1856-1939)   Human behaviour is governed by primitive urges (eros and thanatos) of the ID. ID requires repression which results in formation of Ego and Superego.
    17. 17. Freudian Explanations of Delinquency  Human nature is inherently antisocial  Id: infants start life with antisocial drives  Superego: forms from experience  Ego: helps to negotiate demands for instant gratification with acceptable behavior
    18. 18. Freudian Elements of Personality
    19. 19. Psychoanalytic interpretations    3 Main principles of psychodynamic theory when applied to delinquent + criminal behaviour are that delinquent behavior can be traced to faulty relationships in the family during the first years of life These faulty relationships result in inadequate ego and superego development These inadequacies in turn make it impossible for the child to control later delinquent impulses
    20. 20. Freudian Approach •John Bowlby (1946) studied 44 juvenile delinquents and compared them with noncriminal disturbed juveniles. •39% of the delinquents had experienced complete separation from their mothers for sixmonths or more during the first five years of their lives compared with 5% of the control group. • early maternal deprivation was causally related to delinquent behaviour
    21. 21. Erik Erikson (1902-84)    Stage theorist. During adolescence identity vs. role confusion stage may result in identity crisis. Out-of-control behaviours (e.g. drug experimentation) reflect identity crisis.
    22. 22. Behavioural Theories
    23. 23. Social Learning Theory Aggression  Is learned, not innate.  Requires personal observation of aggression or rewards for aggression.  Involves behaviour modelling of family members, community members and mass media  Three types of learning    Classical conditioning Operant conditioning Observational (vicarious) learning
    24. 24. Principles of Learning Positive reinforcement: increases the target behavior by rewarding the individual  Negative reinforcement: increases the target behavior by removing an unpleasant stimulus  Punishment: reduces the odds of the target behavior being repeated 
    25. 25. Behavioural explanations of crime     All behaviour is learned - deviant behaviour is said to be learnt in much the same way as other behaviour Direct parental control: theorists tie delinquency to parents’ failure to effectively condition their children away from negative behaviors Glueck and Glueck: inconsistent and harsh punishment correlates with delinquent children Patterson: effective parenting (monitoring, punishing, and reinforcing behavior) correlates with nondeliquent children
    26. 26. Principles of Learning
    27. 27. Albert Bandura Violence and aggression are produced by  An arousal event (provocation).  Learned aggressive skills.  Expected success and rewards.  Pro-violence values.
    28. 28. Bandura     - - Observational learning is thought to take place primarily in three contexts: 1. In the family 2. In the prevalent sub culture 3. Through cultural symbols such as television and books. Observational learning: This is where viewers learn behaviours from watching others and may imitate them; many behaviours are learned from the media - Models: A model is a person who is observed and/or imitated.
    29. 29. Bobo doll experiments  show preschoolers a short film of a person beating up a bobo doll.  They were shown the short film twice, but there were three different endings watched by three different groups of children.  First photo shown is the demonstrated short film with a person beating up a bobo doll.  The second photo shown is what the preschoolers did after they watched the short film.
    30. 30. Media and Crime Does media (TV and movies) influence aggression, violence, and criminal behavior?  Conducive to role modeling:   Perpetrators not punished  Targets of violence show little pain  Few long-term negative consequences
    31. 31. Media and Violence       Media provides aggressive scripts. Violence is copied. TV violence increases arousal level. TV violence promotes attitude change, suspicious feelings. TV violence promotes justification for violence. Media violence may disinhibit aggressive behaviour.
    32. 32. Policy Implications of Behaviorism  Criminals can learn pro-social behaviors to replace criminal actions
    33. 33. Cognitive Theory
    34. 34. Cognitive Psychology    Humans’ ability to engage in complex thoughts influences behavior Cognitions (like behaviors) can be learned Focus on   Cognitive structure (how people think) Cognitive content (what people think)
    35. 35. Cognitive Structure     Kohlberg's theory of moral reasoning: humans advance through predictable stages of moral reasoning delinquency is not synonymous with immoral behaviour the reasoning of higher moral stages is less likely to fit in with a criminal lifestyle justification for violating the law can be found at all stages
    36. 36. Kohlberg’s Stages of Moral Development (1 of 2)  Stage 1  Right is blindly obeying those with power and authority.  Emphasis is on avoiding punishment.  Interests of others are not considered.  Stage 2  Right is furthering one’s own interests.  Interests of others are important only as a way to satisfy self-interests.  Stage 3  Moral reasoning is motivated by loyalties to others and a desire to live up to other’s standards.
    37. 37. Kohlberg’s Stages of Moral Development (2 of 2)  Stage 4  Right is following the rules of society and maintaining important social institutions (e.g., family, community).  Stage 5  Moral decisions are made by weighing individual rights against legal principles and the common good.  Stage 6  Moral decisions are based on universal principles (e.g., human dignity, desire for justice).  Principles are considered across different contexts and are independent of the law.
    38. 38. Moral Development Research shows that  Criminals tend to be in stages 1 and 2.  Non-criminals are in higher stages.  People in lower stages fear punishment.  People in middle stages fear reaction of family and friends.  People in highest stages believe in duty to others, universal rights.
    39. 39. Cognitive Content     Rationalizations or denials that support criminal behavior For example, a criminal thinks, “I’m not really hurting anyone.” Criminals are more likely to express such thoughts, but the relationship (causation or correlation) to crime is unclear. Extremely common for sex offenders
    40. 40. Policy Implications of Cognitive Psychology     Cognitive theory translates easily into practice. Cognitive skills programs teach offenders cognitive skills like moral reasoning, anger management, or self-control. Cognitive restructuring attempts to change the content of an individual’s thoughts. Combination cognitive-behavioral programs have had significant success.
    41. 41. Personality traits theory
    42. 42. Eysenck’s Theory of Personality    Argued against sociological theories. Criminal behavior resulted from an interaction of environment and biology. Based on biology.  Personality = Temperament (inborn/genetic)
    43. 43. Choleric Neurotic Melancholic Central NS Extraverted Intoverted Ambiverts Peripheral NS Sanguine Stable Phlegmatic
    44. 44. Eysenck’s Personality Theory Suggests that high levels of introvertism and extrovertism can be related to crime. Also introduced a P scale (psychoticism) to predict criminal behaviour.
    45. 45. definitions     stable extraverts (sanguine qualities such as outgoing, talkative, responsive, easygoing, lively, carefree, leadership) unstable extraverts (choleric qualities such as touchy, restless, excitable, changeable, impulsive, irresponsible) stable introverts (phlegmatic qualities such as - calm, even-tempered, reliable, controlled, peaceful, thoughtful, careful, passive) unstable introverts (melancholic qualities such as quiet, reserved, pessimistic, sober, rigid, anxious, moody).
    46. 46. Extraversion - Introversion    Reflects “need for stimulation”. Extraverts like excitement, become bored more easily, welcome the unconventional Criminals are more likely to be extraverts     Impulsive Thrill-seeking Willing to take chances May be less able to internalize society’s rules – i.e., less ‘conditionable’.
    47. 47. Neurotic -Stable and Crime  Criminals are more likely to be neurotic:     Emotionality acts as a drive to habitual ways of responding. When under stress – do what you know best. Impacts criminality only if the individual has developed anti-social ‘habits’. More important factor as one ages (habits become more engrained)
    48. 48. Psychoticism    Is not the same as “psychosis” No established physiological mechanism but testosterone, monoamine oxidase and serotonin may be involved. Similar to Primary Psychopathy  Cold cruelty, social insensitivity, dislike of others, attraction to the ‘unusual.
    49. 49. Conclusion     The common emphasis of all psychological theories is on the individual. Each theory must be evaluated on its ability to account for criminality. Not all theories are well supported by evidence. Many psychological theories translate well into treatment programs.