5.2: Forensic Psychology Flashcards
- Role of Theory in Forensic Psychology:
- theory and research are cornerstone to psychology
- theories of crime span across disciplines- economics, geography, sociology, psychiatry.
- criminology theory is resource for forensic and criminal psychology
- theory provide perspective on crime and criminality- explainations from broad societal structures to individual psych.
levels of analysis in crime theories
- **societal or macro-level theories **- crime viewed as social structure rather then individual factors. ie Marxsist Conflict Theory- criminal justice system maintains dominance of privileged classes.
- comunity or locality theories- crime distribution is influenced by georgraphy. Certain areas (ie. economic deprivation) more crime. near their home but not too close avoid detect.
- goup socialisation &Influence theory- focus on direct social influences, such as family and peer groups, on criminal behaviour.
4.** individual approaches-** emphasise biology and psych differences as root cause.
o Challenges:
Distinguishing individual characteristics from social influences is complex.
Traditional psychometric measures have shown limited success in linking personality traits to criminality.
Individual Approaches to Crime
- Personality Traits and Criminality:
o Psychopathy and Antisocial Personality Disorder (ASPD) are exceptions, showing stronger associations with criminality.
o Studies on specific offender groups (e.g., paedophiles) often face criticism for using arrested/incarcerated populations, which may not represent all offenders.
Individual Approaches to Crime
- Biological vs. Social Explanations:
o Psychological theories reflect a spectrum from biological (e.g., genetic predispositions) to social influences (e.g., societal norms).
o Theories like Eysenck’s integrate multiple psychological domains, offering a more comprehensive view.
Neuropsychology of Offending
neuropsychological research has explored physiological, anatomical, and genetic abnormalities in criminal subgroups.
- Neuropsychology: The study of brain structure and activity in relation to psychological processes and behaviours, including criminal behaviour.
Research Methods in Neuropsychology
- Historical Methods: Studied brain lesions to link specific brain damage to cognitive and behavioural difficulties.
- Modern Techniques:
o CT (Computerised Tomography), MRI (Magnetic Resonance Imaging), PET (Positron Emission Tomography), and Diffusion Tensor Imaging are used to study brain structure and connectivity.
Neuropsychological Finding & Crime
wolf et al (2015)
studies psychopathology using diffuse tensor imaging
o Found reduced fractional anisotropy (distortion) in the right uncinated fasciculus (connects frontal and temporal lobes).
o Association linked more to psychopathy traits like superficial charm and manipulative behaviour, not directly to antisocial behaviour.
Neuropsychological Finding & Crime
Schiffer et al (2007)
o Paedophiles had less grey matter volume in certain brain areas compared to control groups (heterosexual and homosexual men).
o Raises questions about the causal role of brain abnormalities in criminal behaviour
Neuropsychology Crime
Traumatic Brain Injury (TBI)
o Types:
Penetrative injuries: Skull penetration causing direct brain damage.
Closed head injuries: Force-induced damage from accidents or impacts.
o Vulnerable Brain Areas: Frontal, temporal, and occipital lobes.
o Cognitive and Personality Effects:
Impaired memory, attention, and
planning.
Changes in personality (e.g., apathy, irritability, disinhibition, grandiose thoughts).
o Link to Crime:
Higher prevalence of TBI in offenders (50% in custody vs. 24% in general population in some studies).
TBI affects the social brain network (amygdala, prefrontal cortex, etc.), impairing self-regulation and emotion recognition.
- Social Brain Network: Brain regions (e.g., amygdala, prefrontal cortex) involved in social behaviours, often affected by TBI
Methodological Issues- Neurospcyh and Crime
o Causality Dilemma: Does violence cause brain injury, or does brain injury predispose individuals to violence?
o Sample Bias: Studies often use non-representative samples (e.g., death row inmates, individuals in rehabilitation).
o Socioeconomic Factors: Offenders are often from working-class backgrounds, which are also associated with higher TBI rates.
+ve/-ve Neuropsych&Crime
Pros:
* May lead to targeted medical treatments for criminal behaviour (e.g., post-accident interventions).
- Provides evidence that biological factors have some influence on criminality, though limited to specific cases.
Cons:
* Neuropsychological explanations are far from complete and fail to address mechanisms behind brain anomalies and crime.
- Practical application is limited, as forensic psychology focuses on immediate treatments and assessments
Intelligence and Crime
Historical Perspective
- Early criminological theories often linked low intelligence to criminality, describing offenders as “feeble-minded.”
- Assumptions:
o Low intelligence leads to poor decision-making, increased risk-taking, and inability to secure employment or avoid detection. - Despite initial appeal, the relationship between intelligence and crime is weakly supported by evidence.
intelligence and Crime
Key Findings
- Cullen et al. (1997):
o Found a weak/modest correlation (0.1–0.2) between low IQ and criminality.
o Environmental factors are stronger predictors of crime.
o Example: Low IQ correlates with school failure or unemployment than with criminal acts themselves. - High IQ and Crime:
o Oleson and Chappell (2013): Found genius-level IQ individuals self-reported more violent crimes (e.g., homicide, bomb-making) but had lower conviction rates compared to average IQ groups. - Verbal Intelligence and Arrests:
o Yun and Lee (2013): Found a strong negative correlation between verbal intelligence and arrest rates.
o High verbal intelligence offenders were less likely to be arrested, even controlling for delinquency levels
overall conclusions neuropsych and crime
- Neuropsychology offers insights into the brain’s role in criminal behaviour, particularly through TBI research, but is limited by methodological issues and practical applicability.
- Intelligence theories reveal that while low IQ may weakly correlate with crime, environmental and social factors are much stronger predictors.
- Both fields highlight the complexity of criminal behaviour, requiring multi-faceted approaches to understanding and intervention.
Psychoanalysis and Crime:
parricide and insest, oepidal conflicts, criminality from guilt.
- Psychoanalysis: A psychological theory and therapeutic approach founded by Sigmund Freud, focusing on unconscious motivations, childhood experiences, and internal conflicts.
- Key Freudian ideas about crime include:
o Parricide and Incest: Crimes linked to unresolved Oedipal conflicts.
o Criminality from a Sense of Guilt:
Freud proposed that some crimes result from oppressive feelings of guilt.
Committing “forbidden actions” like theft, fraud, or arson provides relief from these guilt feelings.
Example: Respectable individuals engaging in crimes for relief, not gain.
extension of Freudian Theory
- John Bowlby’s Attachment Theory:
o A neo-psychoanalytic extension, focusing on early child-parent relationships.
o Bowlby’s studies:
Forty-Four Juvenile Thieves (1944): Found that maternal separation in early childhood was strongly linked to delinquency.
Affectionless thieves were characterised by broken emotional bonds with mothers.
o Attachment Theory:
Positive early attachments are critical for social and emotional development.
Disrupted attachments can lead to social dysfunction and delinquency.
o Example: Derek, a child hospitalised for a year, showed an inability to form bonds after returning to his family.
Evaluation of Psychoanalytic Theories
Pros:
* Bowlby’s ideas have been highly influential, shaping research on the impact of parenting and early life experiences on later delinquency.
* Encourages exploration of childhood factors as predictors of criminality.
Cons:
* Freudian concepts have little modern use due to lack of empirical support.
* Psychoanalytic therapies are time-consuming and often deemed ineffective for criminal treatment.
Addiction to Crime
definition and rationale
- Some criminal behaviours persist despite severe negative consequences, resembling addiction.
- The addiction model suggests crime may share characteristics with substance abuse and other behavioural addictions (e.g., gambling, sex addiction).
Characteristics of Addiction in Crime
- Co-occurrence:
o High rates of addiction (substance or alcohol abuse) are observed in criminal populations.
o Risk factors for addiction (e.g., school problems, delinquent peers) are similar to those for criminality. - Persistence and Escalation:
o Most criminal behaviour declines with age, but for some, it persists throughout life, resembling an addictive career. - Process of Change:
o Similar treatments (e.g., Cognitive Behavioural Therapy) are effective for both crime and addiction, indicating shared mechanisms
Models of Addiction
- Disease Model:
o Views addiction as a biological/genetic predisposition.
o Involves tolerance, withdrawal, and craving, with permanent abstinence as the solution.
o Example: Alcoholics Anonymous’ philosophy of permanent recovery through abstinence.
- Cognitive Behavioural Model:
o Focuses on social-psychological influences and learned behaviours.
o Emphasises the role of reward expectations rather than biological dependence.
o Example: Drug use as an adaptive coping mechanism for stress, with withdrawal effects shaped by expectations.
Eysenck’s Biosocial Theory of Crime.
introduction - core question
o Core Question: Instead of asking why people commit crimes, Eysenck proposed the critical question: “Why do we behave in a socially desirable fashion?”
o His answer: We learn not to commit crimes through the development of a conscience, influenced by biological and social factors.
Key Features of Eysenck’s Biosocial Theory
1.** biological perspective-** crime = interaction genetic predisposition and environm.
2. **personality dimensions **
- Extraversion (E):
High extraversion: Individuals seek stimulation and excitement.
Linked to impulsivity, sensation-seeking, and reduced sensitivity to punishment. - Neuroticism (N):
High neuroticism: Emotional instability and high reactivity to stress.
May increase susceptibility to criminal behaviour, especially under pressure. - Psychoticism (P):
High psychoticism: Aggressiveness, egocentricity, and lack of empathy.
Strongly associated with antisocial and criminal tendencies.
3.** conditioning and conscience formation-** Eysenck argued that socialisation and conditioning are key to developing a conscience.
o Individuals with high extraversion and neuroticism are harder to condition, making them less likely to learn socially acceptable behaviours.
Biological Basis of Criminal Behaviour
Eyesenck role of genes in shaping personality
- Eysenck emphasised the role of genetics in shaping personality traits related to crime.
- Key Points:
o Biological predispositions create tendencies for certain behaviours, including antisocial ones.
o However, these tendencies are moderated by environmental influences like upbringing and social norms
+ve/-ve Eyeseck theory
+ve
- integration biology and psychology
- empahsis on personality
- foundation for further research
-ve
- some argue that he oversimplified complex social phenomena- reducing to broad personality traits
- overemphasis on genetics
- limited practical strategies for reducing crime
Gnetics and Crime
XXY hypothesis
o Rare condition: XYY (47, XYY), occurring in ~1 in 1000 men, referred to as Jacobs’ syndrome.
* Early Theories:
o XYY males speculated to be hyper-masculine, with increased aggression due to the additional Y chromosome.
- Later Findings:
o XYY linked more to non-violent crimes (e.g., theft) rather than violent crimes (Witkin et al., 1976).
o XYY men often have low IQ, making them vulnerable to detection, not inherently more criminal.
Social Learning Theory (albert bandura)
o Learning occurs by observing and imitating others’ behaviours.
o Reinforced behaviours (rewarded) are more likely to be replicated; punished behaviours are less likely.
Application to Crime
* Criminal behaviours are learned by observing models (e.g., family, peers) who engage in and are rewarded for crime.
* Rewards (e.g., monetary gain) and punishments (e.g., imprisonment) influence the likelihood of reproducing criminal behaviour
Evaluation of Social Learning Theory
Pros:
* Explains the acquisition of complex behaviours, including crime, as a normal learning process.
* Highlights the role of environmental influences over pathological explanations.
Cons:
* Limited in explaining why some individuals learn criminal behaviour while others do not.
* Weak in specifying under what conditions criminal behaviour is learned or avoided.
Strain Theories of Crime
Merton’s Strain Theory
- Key Idea:
o Crime arises when societal goals (e.g., financial success) cannot be achieved through legitimate means, causing strain.
o Example: Economic hardship leading to drug dealing or theft to achieve monetary goals. - Anomie:
o A state of normlessness where traditional rules and values no longer constrain behaviour.