Psychological Disorders and Criminal Behaviour: An Exhaustive Study Guide

JUVENILE DELINQUENCY: NATURE, EXTENT, AND DEVELOPMENTAL ORIGINS

• Definition of Juvenile Delinquency: Any behavior that violates criminal law when perpetrated by individuals who have not yet reached the age of adulthood, as specified in relevant national or state legislation. It refers specifically to criminal acts committed by minors.
• Legal Threshold in India: Individuals under the age of $18$ are considered children. However, those aged $16-18$ can be tried in adult courts following an assessment by the Juvenile Justice Board (JJB).
• Age of Criminal Responsibility: This is the age at which an individual is reasonably presumed to recognize the difference between right and wrong and can be held fully responsible for criminal acts. Below this age, individuals cannot be held criminally liable.
• International Comparison of Responsibility Age (Table 2.1):     - England and Wales, Australia: $10$     - Canada, Netherlands: $12$     - New Zealand, France: $13$ (In New Zealand, the age is $10$ for murder/manslaughter).     - Austria, Germany, Italy: $14$     - Denmark, Norway, Sweden, Finland: $15$     - Japan, Portugal, Spain: $16$     - Belgium, Luxembourg: $18$
• Age-Crime Curve: A pattern identifying a peak in crime rates during adolescence. Criminal activity surges in late adolescence and typically peaks between ages $24-26$.     - Hirschi and Gottfredson ($1983$): Argued this pattern is a cross-cultural and historical universal that no variables in criminology at the time could explain.     - India vs. Global Trends: Indian age-crime patterns suggest considerable divergence from the HG invariance norm and US distributions.
• Adolescence Characteristics: A period of transition between childhood and adulthood involving biological, psychological, and social changes. Often characterized as a time of "storm and stress," raging hormones, increased parental conflict, and risk-taking.     - Puberty: Typically begins at age $11$ for girls and $12$ for boys. Includes rapid growth and development of secondary sexual characteristics.     - Testosterone: Increases by $10 imes$ or more in boys at puberty. Most researchers agree it does not have a direct effect on aggression.
• Cognitive Development and Risk: Teenagers may accurately assess risks but are more attracted to rewards.     - Reward Salience: A cognitive process where a potential reward stands out, triggering motivation. The brain assigns "desirability" or importance to specific cues.     - Wanting vs. Liking: "Liking" is immediate pleasure; "Wanting" (incentive salience) is a "motivational magnet" that induces approach and seeking behavior.     - Brain Maturity: The prefrontal cortex, responsible for impulse control and planning, is not fully developed until the early $20s$.
• Parental Monitoring: Reduced monitoring and more time with peers lead to greater opportunities for antisocial behavior. Gardner and Steinberg ($2005$) found that peer presence significantly increases risky decision-making in adolescents.

RISK FACTORS AND PROTECTIVE FACTORS IN DELINQUENCY

• General Definitions:     - Risk Factor: Variable predicting an increased probability of later offending.     - Protective Factor: Variable predicting a decreased probability of offending.
• Categorization of Risk Factors (Table 2.2):     - Individual: Low intelligence (IQ), lower educational attainment, lack of school success, impulsiveness/low self-control, low empathy (specifically affective empathy), ADHD, and Conduct Disorder (CD).     - Family: Antisocial parents, parental conflict, child abuse/neglect, harsh or erratic parenting, and lack of supervision.     - Social: Low Socioeconomic Status (SES), delinquent peer association, poor school environment, and deprived neighborhoods.
• Specific Developmental Findings:     - Temperament: Infants with "difficult" or "under-controlled" temperaments (irritable, restless) are at higher risk.     - ADHD and CD: Children diagnosed with both are especially likely to engage in serious delinquency.     - Intergenerational Cycle of Violence: Exposure to domestic violence or child abuse increases the likelihood of subsequent antisocial behavior.     - Strain Theory: The experience of poverty exerts strain, leading to conduct problems, association with delinquent peers, and reduced coping capacity.
• Gender Differences in Violence (Girls):     - Peer Context: Violence used for self-defense, status, or defending reputations.     - Family Context: Girls fight more frequently with parents than boys, often as a reaction to overly controlling styles or household abuse.

DEVELOPMENTAL THEORIES OF DELINQUENCY

• Moffitt’s Developmental Theory: Identifies two distinct paths:     - Life-Course-Persistent (LCP) Offender: A small group beginning delinquency before age $3$. Pattern includes biting/hitting at $4$, shoplifting at $10$, robbery at $22$, and fraud at $30$. Often linked to neurological problems (ADHD, learning issues) and missed opportunities for prosocial skill development.     - Adolescent-Limited (AL) Offender: Offending begins in adolescence and stops around age $18$. Acts usually symbolize adult privilege (drugs, vandalism, status offenses). They desist when prosocial lifestyles (college, jobs) become more rewarding.
• Coercion Development Theory (Gerald Patterson):     - Focuses on parenting rather than child traits.     - The Coercive Cycle: Parents and children use annoying behaviors (whining, power-assertion) to control each other. If a parent acquiesces, the child's coercive behavior is reinforced and generalizes to peers and teachers.     - Trajectories: Early-onset (begins in preschool, severe inept parenting) vs. Late-onset (begins in mid-adolescence, less severe social incompetence).
• Callous-Unemotional (CU) Trait Theory (Paul Frick):     - Identifies a subset of children with conduct disorders who show lack of empathy, limited guilt, and poverty of emotional expression.     - These traits are predictive of lifelong serious, violent offending and adult psychopathy. Reduces responsivity to punishment.

PREVENTION AND INTERVENTION STRATEGIES

• Prevention Principles: Successful programs target multiple systems (family, school, peers, community) and follow developmental principles.     - Lead Exposure: Research indicates a strong relationship between high lead levels in bones and adolescent violence.     - Cultural Sensitivity: Programs must respect urban neighborhood values and traditions as protective factors.
• The Three Types of Prevention:     1. Primary (Universal): Designed to prevent behavior before signs emerge; implemented early (before age $7$ or $8$) in school settings.     2. Secondary (Selective): Works with high-risk children displaying early signs. Example: Perry Preschool Project ($1962$).     3. Tertiary (Intervention): Treatment for fully involved delinquents in residential or community care.
• Multisystemic Therapy (MST): Developed by Scott Hengeller. Intensive, time-limited intervention ($60$ hours over $4$ months).     - Effectiveness: A $22$-year follow-up (Sawyer & Borduin, $2011$) showed MST participants were significantly less likely to be arrested for felonies compared to other therapies ($34.8\%$ vs. $54.8\%$).

MENTAL DISORDERS AND CRIME

• Definition: Mental disorder is a clinically significant behavioral or psychological syndrome associated with present distress or disability.
• Associated Disorders: Disruptive behavior, learning disorders, alcohol/substance use, Schizophrenia, Delusional disorder, Bipolar disorders, and Impulse control disorders (Kleptomania, Pyromania).
• Key Research Findings:     - MacArthur Risk Assessment Study: Mentally disordered patients who abuse drugs have a significantly higher prevalence of violence than those who do not. Substance abuse is the primary heightening factor.     - Schizophrenia: Individuals with Schizophrenia or psychotic disorders are more likely to be arrested for violent crimes; however, without co-occurring substance abuse, this risk is relatively small.     - General Population Data: Only $2\%$ of those without mental disorders committed violence in a year, compared to $11-13\%$ of those with an Axis I diagnosis.
• Pathways (Hiday’s Framework):     - Direct Pathways: Symptoms like Command Hallucinations (believing God/Satan directs acts) or Persecutory/Threat-Control Override (TCO) Delusions lead directly to violence.     - Indirect Pathways: Mental illness leads to substance abuse or social deprivation (deprived neighborhoods, low SES), which then causes offending.
• Legal Competency (CrPC India):     - Machang Lalung Case: An Assamese man imprisoned for $54$ years without trial after being declared mentally unfit; he was released at age $77$.     - Criminal Procedure Code (Sections 328 and 329): Outlines the inquiry into unsoundness of mind. Proceedings are postponed if the accused is found to be of unsound mind.

PSYCHOPATHY: PERSONALITY AND BIOLOGY

• Core Features: A personality disorder characterized by grandiose, arrogant, callous, and manipulative interpersonal traits; lack of empathy, guilt, and remorse.
• Case Study: Ted Bundy: American serial killer who kidnapped and murdered dozens of girls between $1974-1978$.
• Assessment: Hare Psychopathy Checklist-Revised (PCL-R): A $20$-item instrument. Score ranges from $0-40$. The diagnostic cut-off is typically $30$ or higher.
• Psychopathy vs. Antisocial Personality Disorder (APD):     - APD focuses on behaviors; Psychopathy includes affective/interpersonal features.     - Prevalence of APD in prison: $~80\%$. Psychopathy in prison: $15-25\%$.
• Typology of Psychopaths (Hare):     1. Primary Psychopath: The "true" psychopath with identifiable biological/emotional differences.     2. Secondary Psychopath: Commits acts due to emotional problems or conflict; more impulsive and aggressive.     3. Dyssocial Psychopath: Behavioral patterns learned from subcultures like gangs or families.
• Biological Bases:     - Low Arousal Hypothesis: Characterized by low physiological arousal, low resting heart rate, and deficits in fear/anxiety, making them hard to socialize via punishment.     - Violence Inhibition Model (VIM): Impaired amygdala functioning prevents the recognition of distress cues in others, facilitating "cold-blooded" violence.     - Hemisphere Asymmetry: Deficient linguistic processing in the left hemisphere; an "Emotional Paradox" where they can talk about emotions but cannot use them.

AGGRESSION AND VIOLENCE

• Definitions:     - Aggression (Baron): Behavior directed toward the goal of harming another living being who is motivated to avoid such treatment.     - Violence: Destructive physical aggression intentionally directed at harming persons or things.
• Types of Aggression:     - Hostile (Reactive): Characterized by strong emotional arousal (anger/fear), impulsive, response to perceived threat.     - Instrumental (Proactive): Predatory, premeditated, goal-oriented, absence of high emotional arousal.
• Situational and Environmental Factors:     - Frustration-Aggression Hypothesis: Blocked goals increase the likelihood of aggression.     - Weapons Effect: Presence of weapons increases aggressive thoughts and behavior.     - Temperature: Hotter environments increase irritability and violence rates.
• Social Information Processing Model (Dodge/Crick):     1. Encoding cues     2. Interpretation of cues (Hostile Attribution Bias)     3. Clarification of goals     4. Response access/construction     5. Response decision     6. Behavior
• General Aggression Model (GAM): Integrates inputs (Person factors like narcissism; Situation factors like provocation), Routes (Internal states: Affect, Cognition, Arousal), and Outcomes (Appraisal and decision process).

HOMICIDE AND MULTIPLE MURDER

• Categories of Homicide:     - Criminal Homicide: Includes Murder (intentional) and Manslaughter (unintentional).     - Voluntary Manslaughter: Killing without planned intent.     - Involuntary Manslaughter: Killing through recklessness/negligence (e.g., drunk driving).     - Hate Crime: Motivated by bias against race, religion, sexual orientation, or disability.
• Homicide Patterns: Men perpetrate $~90\%$ of homicides. Women are most often victims of intimate partners or family members.
• Multiple Murder Typologies:     - Serial Murder: Killing of $3+$ individuals with a "cooling off" period. Types: Visionary, Hedonistic, Power/Control, Mission-oriented.     - Spree Murder: Killing of several people over hours/days in different locations as part of one episode.     - Mass Murder: Killing of several people in a single episode at one location.
• Typology of Serial Killers (Holmes & De Burger):     - Visionary: Impelled by voices.     - Hedonistic: Kill for pleasure (lust murder).     - Power/Control: Motivated by domination.
• Trauma Control Model (Hickey): Serial murder stems from unresolved childhood trauma masked by a facade of control and fueled by violent fantasy.
• FBI Crime Classification (Homicide): (1) Criminal Enterprise, (2) Personal Cause, (3) Sexual Homicide, (4) Group Cause.

SEXUAL OFFENDING

• Legal Classifications:     - Rape: Penetration without consent.     - Statutory Rape: Consensual intercourse with a minor (under $18$ in India).     - Marital Rape: Currently not a criminal offense in India unless the couple is separated (under challenge).
• Impact on Victims: High rates of PTSD ($largest \% among sufferers$), $13\%$ suicide attempt rate.
• Characteristics of Offenders:     - Knight & Sims-Knight Three-Path Model: Paths defined by (1) Sexual Drive, (2) Antisocial Behavior, (3) Callousness/Unemotionality.     - MTC Classification of Rapists: Includes Displaced Aggression, Compensatory, Sexual Sadistic, and Impulsive types.     - Groth Typology: Anger Rape, Power Rape, Sadistic Rape.
• Pedophilia and Child Sexual Abuse:     - Definition: Conscious sexual interest in prepubertal children as defined by fantasies or contact over $6$ months.     - Patterns:         - Fixated: Exclusive preference for children; socially immature.         - Regressed: Offending follows a jolt to masculine adequacy.         - Exploitative: Uses tricks/force to satisfy needs.         - Aggressive/Sadistic: Eroticizes pain and fear.
• Treatment Paradigms:     - RNR Principles: Risk, Need, Responsivity.     - Relapse Prevention (RP): Self-control program identifying High-Risk Situations (HRS) and Apparently Irrelevant Decisions (AIDs).     - Medical Treatment: Antiandrogens and antidepressants to reduce sexual arousability.