Forensics notes

Forensic Psychology

Part 1: Defining and Measuring Crime

  • Definition of Crime: Crime is classified as any illegal act that is punishable by incarceration or another form of punishment, following legal proceedings involving a judge and jury.
    • Historical Issues: There are historical variations in the definition of crime; actions viewed as criminal in the past may not be considered so today.
    • Example: Homosexuality was criminalized in the UK until the Sexual Offences Act of 1967, which decriminalized consensual same-sex relationships.
    • Cultural Issues: Cultural contexts also influence the perception of crime.
    • Example: Physical discipline like smacking a child might be culturally accepted as ‘tough love’ in some societies, while in the UK, it is legally punishable under the 2004 Child Protection Act.
  • Measuring Crime: There are three primary methods for measuring crime:
    1. Official Statistics: These reflect the number of crimes reported to or recorded by police, compiled and published annually by the Home Office.
    2. Victim Surveys: These surveys involve around 50,000 randomly selected households that self-report crimes experienced in the past year, published annually by the Crime Survey for England and Wales.
    3. Offender Surveys: These surveys collect data from a random sample of offenders who report the types and frequencies of crimes committed over a defined time frame (e.g., the last year).
    • Utility of Surveys:
    • Victim Surveys: Help reduce the 'dark figure of crime', which suggests that a significant amount (approximately 75%) of crime remains unreported.
      • Example: Farrington & Dowds (1985) demonstrated that changes in police reporting practices could artificially inflate crime statistics, e.g., the reporting of thefts below a certain monetary threshold.
    • Offender Surveys: Useful for understanding crime patterns and risk factors, informing prevention and management strategies.
  • Limitations of Methods:
    • Official Statistics: Inaccurate due to underreporting and inconsistencies in police recording practices.
    • Victim Surveys: May face methodological issues, such as ‘telescoping’, where victims misremember the timing of events due to trauma, potentially leading to skewed data.
    • Offender Surveys: Data reliability may be compromised as offenders might exaggerate or minimize their criminal behavior.

Part 2: Offender Profiling: The Top-Down Approach

  • Overview of the Top-Down Approach: Utilizes a predefined categorization method developed by the FBI to classify offenders into two categories: organized and disorganized.
    • Profile Generation Steps:
    1. Crime scene classification
    2. Crime reconstruction
    3. Data assimilation
    4. Profile generation
    • Characteristics:
    • Organized Offenders:
      • Traits include social and sexual competence, meticulous planning, and less likelihood of leaving evidence at the crime scene.
      • Examples include serial killers like Ted Bundy, who exhibit well-thought-out attack strategies.
    • Disorganized Offenders:
      • Exhibit impulsive behavior, lack of planning, and often leave significant evidence at crime scenes.
      • Acts may appear random and often occur close to the offender's residence, categorized as ‘marauders’.
  • Limitations of the Top-Down Approach:
    • Applicable mainly to violent crimes with clear characteristics (e.g., rape, murder), but less effective for property crimes or financial fraud.
    • The binary classification may oversimplify the diversity of criminal behavior, overlooking motives that differentiate offenders.
    • Evidence supporting organized profiles is more substantial than that for disorganized offenders, leading to concerns regarding the validity of the classification.
    • Example: Canter et al. (2004) conducted a study analyzing 100 murders and found disorganized offenders did not consistently present distinct characteristics.

Part 3: Offender Profiling: The Bottom-Up Approach

  • Overview of the Bottom-Up Approach: This methodology does not utilize preset categories but develops profiles by analyzing crime scenes and eyewitness testimonies increasingly.
  • Key Components:
    1. Investigative Psychology: Analyzes each crime systematically through data matching using databases to derive psychological profiles.
    • Emphasizes the significance of time and place related to criminal behavior.
    • Interpersonal Coherence: Suggests that how an offender treats victims reflects their real-life personality and social functioning.
    1. Geographical Profiling: Assumes offenders have operational bases inferred by mapping previous crime locations, forming a circular pattern around their area of activity.
    • Classifications include ‘marauders’ who commit crimes near their base and ‘commuters’ who operate further away.
  • Evidence Supporting the Bottom-Up Approach:
    • Lundrigan and Canter (2001) showed geographic profiling through smallest space analysis to identify spatial behavior patterns in offenders.
    • Despite its usefulness, it does not guarantee correct offender identification, being merely a tool for narrowing investigative focus.
    • Copson (1995) found that profiles led to successful offender identification in merely 3% of cases but were helpful in 83% of the time.

Part 4: Biological Explanations: Atavistic Form

  • Foundational Theory: Lombroso proposed the concept of criminals as "genetic throwbacks" with atavistic physical features indicative of their criminality.
  • Identifying Characteristics:
    • Suggested traits include long ears, dark skin, extra nipples, curly hair, etc.
    • Specific traits were associated with particular crimes; Example: murderers had bloodshot eyes, sexual deviants had glinting eyes.
  • Methodology: Lombroso based his conclusions on the analysis of 3,839 living and 383 dead criminals, asserting that about 40% of criminal behavior can be attributed to these atavistic characteristics.
  • Critique of Lombroso’s Theory:
    • Considered racist due to racial profiling of traits that may erroneously suggest biological predisposition to crime informs social prejudices.
    • Methodological flaws include lack of control groups and reliance on single cultural samples (Italian).
  • Lombroso’s Legacy: Often termed the ‘father of criminology’, his theories laid the groundwork for future criminal profiling concepts despite their scientific shortcomings.

Part 5: Biological Explanations: Genetic and Neural Explanations

  • Genetic Factors: Emphasis on the heritability of criminal behavior and candidate genes linked to criminality.
    • Christiansen et al. (1977) reported higher concordance rates (33%) in identical twins compared to non-identical twins (12%), suggesting a genetic influence.
    • MZ twins share 100% of genetic material, while DZ twins share about 50%.
  • Gene Interaction:
    • Diathesis-stress model explaining criminal behavior involves genetic predisposition interacting with environmental factors.
    • Tiihonen et al. (2014) identified abnormalities in MAOA and CDH-13 genes, linked to neurotransmitter regulation, increasing criminality likelihood by 13-fold.
  • Neural Explanations:
    • Raine et al. (2000) identified lower prefrontal cortex activity (11% reduction) in criminals, suggesting impaired decision-making.
    • Keysers et al. (2011) illustrated a neural mechanism allowing criminals to modulate empathy, explaining their lack of concern for victims.
  • Methodological Issues:
    • Twin studies assume genetic differences as the sole differentiating factor, neglecting shared environmental factors influencing outcomes.
    • The interactionist perspective provides a more nuanced understanding of the nature-nurture interplay.
    • Example: Mednick et al. (1984) analyzed court records of adoptees, finding concordance for convictions influenced by shared genetic factors in biological parents.

Part 6: Psychological Explanations: Eysenck’s Theory

  • Criminal Personality: Eysenck suggested that a specific criminal personality (neurotic-extravert) correlates with nervous system activity.
    • Dimensions included in his theory:
    1. Neurotic-Stable
    2. Extravert-Introvert
    3. Psychoticism (added later)
  • Nervous System Influence: Extraverts possess underactive nervous systems, seeking stimulation that can lead to impulsive and risk-seeking behaviors.
  • Socialization: Criminal personalities are less susceptible to socialization process during childhood leading to perceived antisocial behaviors as normative.
  • Assessment Tool: Personality can be measured through Eysenck's Personality Inventory (EPI).
  • Critiques:
    • Reductionist approach may overlook the complexity of personality traits, often influenced by situational factors.
    • Cultural bias noted in data sampled predominantly from Western cultures, limiting generalizability.
    • Alternative classification systems propose more comprehensive models (e.g., Digman’s Five Factor Model).

Part 7: Cognitive Explanations for Offending Behaviour

  • Moral Development: Kohlberg proposed three levels of moral reasoning:
    1. Pre-Conventional (focus on punishment)
    2. Conventional (maintains social order)
    3. Post-Conventional (moral contracts and rights)
  • Criminal Reasoning: Criminals often function at the pre-conventional level, lacking empathy and societal awareness compared to law-abiding individuals.
  • Cognitive Distortions: Key characteristic in criminal thinking, involving dysfunctional thought processes, primarily seen through:
    • Hostile Attribution Bias: Offenders interpret ambiguous situations as hostile.
    • Example: Schönenberg & Justye (2014) demonstrated that violent offenders perceive neutral facial expressions as aggressive.
    • Minimalization: Common among sex offenders to downplay the severity of their actions.
    • Example: Pollock & Hasmall (1991) found that many child molesters justified their actions as showing affection.
  • Limitations of Cognitive Theories: Cannot universally explain all criminal behavior. Impulsive crimes may lack reasoning and overemphasis rationale for crimes motivated by financial gain.
    • Alternative Views: Intelligence offered as a more quantifiable predictor of criminality compared to moral reasoning levels.
    • Kohlberg’s Revision: Gibbs (1979) proposed a two-level system of reasoning that aligns with Kohlberg without cultural bias, enhancing validity.
    • Practical Application: Cognitive therapy such as CBT could address cognitive distortions and are more effective in reducing recidivism.

Part 8: Psychological Explanations: Differential Association Theory

  • Theory Overview: Sutherland's Differential Association Theory posits that crime is a learned behavior through social contexts and interactions with criminal peers.
  • Learning Process: Observers absorb attitudes and skills associated with criminal behaviors from relationships with pro-criminal influences.
  • Predictions: The likelihood of criminality increases if exposure to pro-criminal attitudes outweighs anti-criminal influence, using concepts of frequency and intensity.
  • Limitations:
    • Measurement challenges regarding exposure intensity and frequency undermine predictive validity.
    • Deterministic views could lead to self-fulfilling prophecies or reinforce societal discrimination against individuals with criminal backgrounds.
  • Advantages: Shifts blame from the individual to the environment, offering a more humane view of crime and potential reforming strategies through environmental changes.

Part 9: Psychological Explanations: Psychodynamic Explanations

  • Inadequate Superegos: Blackburn (1993) described three types linked to criminality:
    1. Deviant superego: Exhibiting distorted morals as learned from criminal parents.
    2. Weak superego: Arises from inadequate identification with the same-sex parent during the phallic stage.
    3. Over-harsh superego: Craves punishment due to harsh parenting experiences.
  • Consequences: Dysfunctional superegos facilitate impulsive and selfish behavior, aligning with Bowlby's idea of maternal deprivation leading to affectionless psychopathy.
  • Evidence Against: Lewis (1959) asserted that maternal deprivation does not reliably predict future criminality or relational difficulties.
  • Gender Bias: Suggestions from Hoffman (1975) that girls face different risks in becoming criminal do not align with statistical evidence showing girls exhibit more delayed gratification than boys.
  • Scientific Validity: Conceptual issues arise from the superego being part of the unconscious mind, leaving it unfalsifiable and pseudoscientific in nature.

Part 10: Dealing with Offending Behaviour: Custodial Sentencing

  • Goals of Custodial Sentencing:
    • Deterrence: Discouraging crime through punishment.
    • Incapacitation: Protecting society from offenders.
    • Retribution: Ensuring punishment fits the crime.
    • Rehabilitation: Offering training and treatment to reduce recidivism.
  • Negative Effects: Could involve stress, depression, institutionalization (impairing adaptation to life after release), and heightened recidivism (57% will reoffend within a year in the UK).
  • Comparisons: Norway boasts lower recidivism due to greater focus on rehabilitation compared to the punitive focus in the UK.
  • Individual Differences: Efficacy varies based on personal disposition, sentence length, past prison exposure, and treatment type, emphasizing individual responses to custodial environments.
  • Learning Opportunities: Rehabilitative programs (e.g., CBT for sex offenders, anger management) may prove beneficial, suggesting that custodial settings can have positive outcomes when well-structured.
  • Political Influence: Public sentiment often favors punitive measures, potentially skewing policy decisions. Political motives could maintain tough sentencing as a means to gain voter support.

Part 11: Dealing with Offending Behaviour: Behaviour Modification in Custody

  • Token Economies: Utilizes operant conditioning principles to reinforce desirable behaviors among offenders.
    • Reinforcement: Increases the likelihood of behavior repetition through rewards contingent upon displaying desired behaviors.
    • Mechanism: Offenders earn tokens, a secondary reinforcer, which can be exchanged for privileges (primary reinforcers).
  • Evidence of Effectiveness: Hobbs and Holt (1976) found significant increases in positive behaviors among juvenile offenders in token economies over 14 months, highlighting improved prison environments.
  • Comparative Approaches: Behaviour modification only addresses surface-level issues compared to anger management's work on underlying causes of anger and offending behavior.
  • Ethical Considerations: Compulsory participation can lead to denial of essential rights, necessitating ethical scrutiny over the application of such systems in custodial settings.
  • Flexibility of Implementation: Behaviour management systems can be tailored to diverse institutional needs, allowing for adaptation to various settings while ensuring consistent application enhances efficacy.

Part 12: Dealing with Offending Behaviour: Anger Management

  • Approach to Anger Management: Focuses on recognizing and addressing root emotions preceding anger rather than suppressing anger itself.
  • Stages Involved: Incorporates cognitive and behavioral strategies:
    1. Cognitive Preparation: Identifying and analyzing emotional triggers.
    2. Skills Acquisition: Teaching specific techniques (e.g., breathing exercises, meditation) to manage anger.
    3. Application Practice: Real-life role-playing scenarios to practice skills, reinforced positively by therapists.
  • Effectiveness: Keen et al (2000) found significant improvements in anger control among participants of anger management programs compared to pre-therapy levels.
  • Critiques: Anger management may inaccurately assume that all violent behaviors stem from anger mismanagement and may vary among different offender categories without true effectiveness in real life once off therapy.
  • Strength: Combines varied psychological approaches, recognizing the complexity of aggression triggers without oversimplifying causes.

Part 13: Dealing with Offending Behaviour: Restorative Justice

  • Concept of Restorative Justice (RJ): Advocates for a dialogue between offenders and victims, emphasizing accountability and understanding emotional consequences of offenses.
  • Practical Implementation: Offers apologies and compensation for damages, framed by guidelines from the Restorative Justice Council.
  • Research on Effectiveness: Latimer et al (2005) found RJ methods significantly enhance victim and offender satisfaction, compliance in restitution efforts, and reduce recidivism rates compared to traditional punitive methods.
  • Criticism: Assumes offender remorse and may not account for situations where the survivor desires retribution, which can lead to inappropriate power dynamics, especially in cases of domestic violence.
  • Flexible Application: RJ methods are adaptable for various contexts (schools, prisons), promoting conflict resolution alternatives to violence and aggression while holding offenders accountable.