Complete Summary and Solutions for Psychological Disorders – NCERT Class XII Psychology, Chapter 4 – Concepts, Causes, Classification, and Major Disorders

Comprehensive summary and explanation of Chapter 4 ‘Psychological Disorders’ from the NCERT Class XII Psychology textbook, covering definitions, causes, models of abnormality, classification systems (DSM-5 & ICD-10), and major psychological disorders — along with all NCERT exercises, key terms, and review questions with answers.

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Categories: NCERT, Class XII, Psychology, Chapter 4, Psychological Disorders, Abnormal Behaviour, Mental Health, DSM-5, ICD-10, Summary, Questions, Answers, Concepts, Models

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Psychological Disorders - Class 11 Psychology Chapter 4 Ultimate Study Guide 2025

Full Chapter Summary & Detailed Notes - Psychological Disorders Class 11 NCERT

Overview & Key Concepts

Chapter Goal: Understand abnormality concepts, criteria, historical views, classifications, underlying factors, and major disorders. Exam Focus: Models (bio-psycho-social, diathesis-stress), disorders (anxiety, depressive, schizophrenia), classifications (DSM-5, ICD-10); 2025 Updates: Links to modern mental health stigma, neurodiversity in disorders, pandemic impacts. Fun Fact: Demonology in Middle Ages treated disorders via exorcism. Core Idea: Abnormality as maladaptive; interlinks to therapy (Ch5). Real-World: Anxiety in exams. Expanded: All subtopics point-wise with evidence (e.g., 4 Ds of abnormality), examples (e.g., Deb's panic), debates (e.g., social norms vs. maladaptive).
Wider Scope: From supernatural to bio-psycho-social; sources: Activities (4.1, 4.2), boxes (4.1, 4.2, 4.3), Table 4.1.
Expanded Content: Include socio-cultural triggers, role of stress, biological vs. psychological; multi-disciplinary (e.g., neuroscience in schizophrenia, sociology in stigma).

Activity 4.1: Identifying Abnormal Behaviour Description

Step-by-step exercise: Talk to three people about mentally ill person, understand why abnormal, signs/symptoms, causes, help. Reflects subjective views of abnormality.

Introduction

Psychological Disorders Overview: Unhappiness, anxiety, maladaptive behaviour; failures in adaptation to life challenges.
Historical Mystification: Studied for 2,500+ years; causes discomfort/fear; viewed as unusual.
Adaptation Failure: Inability to modify behaviour to environment; maladaptive when interferes with functioning.
Abnormal Psychology Focus: Causes, consequences, treatment of maladaptive behaviour.
Expanded: Evidence: Global unhappiness; debates: Illness vs. label; real: Exam anxiety normal vs. disorder if extreme.

Concepts of Abnormality and Psychological Disorders

Four Ds: Deviance (extreme), Distress (upsetting), Dysfunction (interferes daily), Danger (to self/others).
Deviation from Norms: Away from normal; no ideal model.
Social Deviation View: Breaks societal norms; cultural influence (e.g., aggressive acceptable in competitive societies).
Maladaptive View: Interferes with well-being/growth; better criterion than conformity.
Stigma: Shame attached; view as illness to reduce hesitation for help.
Expanded: Evidence: Definitions evolve; debates: Norms change over time; real: Silence in class maladaptive.

Activity 4.2: Contextual Abnormality Description

Examples: Eating sand normal if stranded; talking to self praying; standing in street as policeman. Highlights context in abnormality.

Historical Background

Supernatural Approach: Evil spirits/exorcism; shaman medium; still used in societies.
Biological Approach: Body/brain defects; linked to disorders; treatments correct processes.
Psychological Approach: Thinking/feeling/perception inadequacies.
Ancient Greece: Hippocrates/Plato: Conflicts emotion/reason; Galen humours (blood/black bile/yellow bile/phlegm); similar to Indian doshas (vata/pitta/kapha).
Middle Ages: Demonology/witch-hunts; St. Augustine anguish/conflict for psychodynamic.
Renaissance: Humanism; Weyer psychological causes for witches.
Age of Reason (17th-18th): Scientific over faith; reform movement/deinstitutionalisation/community care.
Modern Convergence: Bio-psycho-social interactional approach.
Expanded: Evidence: Recurring themes; debates: Supernatural vs. scientific; real: Asylums reforms.

Classification of Psychological Disorders

Purpose: Communicate, understand causes/development/maintenance.
DSM-5 (APA): Discrete criteria presence/absence; current version.
ICD-10 (WHO): Behavioural/Mental Disorders; clinical features/diagnostic guidelines; used in India.
Expanded: Evidence: Grouped shared characteristics; debates: Categorical vs. dimensional; real: Anxiety category.

Factors Underlying Abnormal Behaviour

Biological Factors: Genes/endocrine/malnutrition/injuries; neurotransmitters (GABA low anxiety, dopamine excess schizophrenia, serotonin low depression).
Psychological Models: Psychodynamic (Freud unconscious conflicts id/ego/superego); Behavioural (learned maladaptive via classical/operant/social); Cognitive (irrational assumptions/overgeneralisation); Humanistic-Existential (avoid responsibility inauthentic lives).
Socio-Cultural Factors: War/violence/prejudice/economic problems/social change; enmeshed families/isolation/labels.
Diathesis-Stress Model: Biological predisposition + vulnerability + stressors lead to disorder.
Expanded: Evidence: Multi-factor; debates: Biology alone insufficient; real: Maternal deprivation anxiety.

Major Psychological Disorders

Anxiety Disorders: Vague fear/apprehension; symptoms (heart rate/shortness breath); generalised (unexplained fears), panic (recurrent terror), phobias (irrational specific/social/agoraphobia).
Obsessive-Compulsive and Related Disorders: Obsessions (persistent thoughts), compulsions (repetitive behaviours); OCD cycle.
Trauma- and Stressor-Related Disorders: PTSD post-trauma (flashbacks/avoidance).
Somatic Symptom and Related Disorders: Physical symptoms without medical cause; illness anxiety/conversion.
Dissociative Disorders: Disruption identity/memory; amnesia/identity/fugue/depersonalisation.
Depressive Disorders: Sadness/loss interest; major depressive (hopelessness/suicidal).
Bipolar and Related Disorders: Mania/depression cycles; elevated mood/grandiosity.
Schizophrenia Spectrum and Other Psychotic Disorders: Delusions/hallucinations/disorganised thought/speech/behaviour; negative symptoms (avolition).
Neurodevelopmental Disorders: Intellectual disability/autism/ADHD from early development.
Disruptive, Impulse-Control and Conduct Disorders: Aggression/rule-breaking; oppositional defiant/conduct.
Feeding and Eating Disorders: Anorexia/bulimia/binge-eating.
Substance-Related and Addictive Disorders: Dependence/abuse; alcohol/cannabis/opioids effects (Box 4.2, 4.3).
Expanded: Evidence: Symptoms/causes; debates: Spectrum vs. categorical; real: Deb's panic disorder.

Table 4.1: Types of Anxiety Disorders Description

Generalised: Prolonged vague fears; Panic: Recurrent terror; Phobias: Specific/social/agoraphobia; OCD: Obsessions/compulsions; PTSD: Trauma re-experiencing.

Box 4.1: Salient Features of Somatic Symptom and Dissociative Disorders Description

Somatic: Physical complaints no cause; Dissociative: Memory/identity loss; examples like conversion/amnesia.

Box 4.2: Effects of Alcohol - Some Facts Description

Central nervous depressant; impairs judgment/coordination; chronic liver/brain damage.

Box 4.3: Commonly Abused Substances Description

Alcohol, opioids, cannabis, cocaine, amphetamines, sedatives, nicotine, caffeine; effects/addiction.

Why This Guide Stands Out

Comprehensive: All subtopics point-wise, 10+ diagram/activity descriptions; 2025 with links (e.g., stigma in mental health), disorders analyzed for depth.

Key Themes & Tips

Aspects: Abnormality, history, classification, factors, disorders.
Tip: Memorize 4 Ds/models; compare tables; debate social vs. maladaptive.

Exam Case Studies

Diathesis-stress application; anxiety types; schizophrenia symptoms.

Project & Group Ideas

Timeline of abnormality views.
Debate: Is abnormality cultural?
Survey stigma in society.

Key Definitions & Terms - Complete Glossary

All terms from chapter; detailed with examples, relevance. Expanded: 40+ terms grouped by subtopic; added advanced like "4 Ds", "Diathesis-Stress".

Abnormality Concepts

Deviance/Distress/Dysfunction/Danger. Ex: Extreme behaviour. Relevance: Identify disorders.

Deviation from Social Norms

Breaks societal rules. Ex: Aggressive in cooperative culture. Relevance: Cultural label.

Maladaptive Behaviour

Interferes well-being/growth. Ex: Silence questions. Relevance: Functional criterion.

Stigma

Shame mental illness. Ex: Hesitant consult. Relevance: Barrier help.

Supernatural Approach

Evil spirits/exorcism. Ex: Shaman appease. Relevance: Historical view.

Biological Approach

Body/brain defects. Ex: Neurotransmitter imbalance. Relevance: Medical treatment.

Psychological Approach

Thinking/feeling issues. Ex: Irrational assumptions. Relevance: Therapy basis.

Humours Theory

Four fluids temperament. Ex: Black bile melancholy. Relevance: Ancient balance.

Demonology

Evil possession/witch-hunts. Ex: Middle Ages. Relevance: Superstition era.

Reform Movement

Deinstitutionalisation/community care. Ex: 18th century compassion. Relevance: Humane shift.

Bio-Psycho-Social Approach

Interaction three factors. Ex: Integrated treatment. Relevance: Modern convergence.

DSM-5

APA manual criteria. Ex: Discrete presence/absence. Relevance: Clinical use.

ICD-10

WHO classification guidelines. Ex: Behavioural/mental. Relevance: India standard.

Biological Factors

Genes/neurotransmitters. Ex: Dopamine schizophrenia. Relevance: Organic basis.

Psychodynamic Model

Unconscious conflicts. Ex: Id/ego/superego. Relevance: Freud symbolic.

Behavioural Model

Learned maladaptive. Ex: Conditioning unlearn. Relevance: Environmental.

Cognitive Model

Irrational thoughts. Ex: Overgeneralisation. Relevance: Thinking errors.

Humanistic-Existential Model

Avoid responsibility. Ex: Inauthentic lives. Relevance: Self-actualise.

Socio-Cultural Factors

Stress/prejudice. Ex: Enmeshed families. Relevance: Social networks.

Diathesis-Stress Model

Predisposition + stressors. Ex: Vulnerability trigger. Relevance: Interaction.

Anxiety Disorders

Vague fear/symptoms. Ex: Generalised/panic/phobias. Relevance: Common category.

Panic Disorder

Recurrent terror. Ex: Abrupt surge. Relevance: Intense fear.

Phobias

Irrational fears. Ex: Specific/social/agoraphobia. Relevance: Avoid triggers.

OCD

Obsessions/compulsions. Ex: Cycle relief. Relevance: Related disorders.

PTSD

Trauma re-experience. Ex: Flashbacks. Relevance: Stressor-related.

Somatic Symptom Disorder

Physical no cause. Ex: Illness anxiety. Relevance: Body focus.

Dissociative Disorders

Identity/memory disruption. Ex: Amnesia/fugue. Relevance: Escape trauma.

Depressive Disorders

Sadness/loss interest. Ex: Major depressive. Relevance: Mood low.

Bipolar Disorders

Mania/depression cycles. Ex: Elevated mood. Relevance: Mood swings.

Schizophrenia

Delusions/hallucinations. Ex: Disorganised thought. Relevance: Psychotic.

Neurodevelopmental Disorders

Early deficits. Ex: Intellectual disability/ADHD. Relevance: Developmental.

Disruptive Disorders

Aggression/rule-breaking. Ex: Conduct disorder. Relevance: Impulse control.

Feeding Disorders

Eating disturbances. Ex: Anorexia/bulimia. Relevance: Body image.

Substance Disorders

Abuse/dependence. Ex: Alcohol effects. Relevance: Addictive.

Neurotransmitters

Chemical messengers. Ex: GABA anxiety. Relevance: Biological basis.

Enmeshed Structure

Overinvolved family. Ex: Difficulty independent. Relevance: Socio-cultural.

Pathogenic Stressors

Trigger factors. Ex: In diathesis model. Relevance: Disorder onset.

Hypervigilance

Constant danger scan. Ex: Generalised anxiety. Relevance: Symptom.

Negative Symptoms

Loss functions. Ex: Avolition schizophrenia. Relevance: Psychotic.

Delusions

False beliefs. Ex: Persecution. Relevance: Schizophrenia.

Tip: Group by domain (concepts/factors/disorders); examples for recall. Depth: Debates (e.g., stigma reduction). Errors: Confuse models. Historical: Supernatural origins. Interlinks: To Ch5 therapy. Advanced: DSM criteria. Real-Life: Pandemic anxiety. Graphs: Disorder prevalence. Coherent: Evidence → Interpretation. For easy learning: Flashcard per term with example.

60+ Questions & Answers - NCERT Based (Class 11) - From Exercises & Variations

Based on chapter + expansions. Part A: 10 (1 mark, one line), Part B: 10 (4 marks, five lines), Part C: 10 (6 marks, eight lines). Answers point-wise in black text.

Part A: 1 Mark Questions (10 Qs - Short)

1. What are the 'four Ds' of abnormality?

1 Mark Answer:

Deviance, distress, dysfunction, and danger.

2. What is the social deviation view of abnormality?

1 Mark Answer:

Behaviour that deviates from societal norms and expectations.

3. What is maladaptive behaviour?

1 Mark Answer:

Behaviour that interferes with well-being and growth.

4. What was the supernatural approach to abnormality?

1 Mark Answer:

Evil spirits or devil possession treated by exorcism.

5. What is the biological approach to disorders?

1 Mark Answer:

Body and brain processes linked to maladaptive behaviour.

6. What is DSM-5?

1 Mark Answer:

Diagnostic and Statistical Manual of Mental Disorders, 5th Edition by APA.

7. What is the diathesis-stress model?

1 Mark Answer:

Biological predisposition triggered by stressors leads to disorder.

8. What is generalised anxiety disorder?

1 Mark Answer:

Prolonged, vague, unexplained intense fears not attached to objects.

9. What are delusions in schizophrenia?

1 Mark Answer:

False beliefs not shared by others in the culture.

10. What is substance dependence?

1 Mark Answer:

Intense craving with tolerance and withdrawal symptoms.

Part B: 4 Marks Questions (10 Qs - Medium, Exactly 5 Lines Each)

1. Explain the concepts of abnormality using the four Ds.

4 Marks Answer:

Deviance: Behaviour that is different, extreme, unusual, or bizarre from norms.
Distress: Unpleasant and upsetting to the person or others involved.
Dysfunction: Interferes with daily activities in a constructive way.
Danger: Potentially harmful to the person or others around them.
These provide a starting point to explore psychological abnormality beyond norms.

2. Describe the social deviation view of abnormal behaviour.

4 Marks Answer:

Abnormal as label for behaviour deviant from social expectations and norms.
Norms are stated/unstated rules for proper conduct in society.
Cultural influence: Competition accepts aggression, cooperation rejects it.
Views change over time, e.g., societal values evolve abnormality definitions.
Assumes normality is conformity, but questions if all accepted is normal.

3. What is the maladaptive view of abnormality?

4 Marks Answer:

Focuses on whether behaviour fosters individual and group well-being.
Includes growth, fulfilment, actualisation beyond maintenance/survival.
Conforming can be abnormal if maladaptive, e.g., interferes functioning.
Implies problem from vulnerability, inability cope, or environmental stress.
Best criterion as emphasises optimal functioning over societal acceptance.

4. Outline the historical background of abnormality views.

4 Marks Answer:

Supernatural: Evil spirits/exorcism; recurring ancient theory.
Biological: Body/brain links; treatments correct defects.
Psychological: Thinking/feeling inadequacies cause problems.
Greece: Humours/conflicts; Middle Ages demonology; Renaissance humanism.
Modern: Bio-psycho-social convergence; deinstitutionalisation/community care.

5. What are the classifications of psychological disorders?

4 Marks Answer:

DSM-5: APA manual with discrete clinical criteria for presence/absence.
ICD-10: WHO Behavioural/Mental Disorders with symptoms/guidelines.
Categories grouped by shared characteristics for communication.
Helps understand causes, development, maintenance of disorders.
Used by psychologists/psychiatrists/social workers; standard in India ICD-10.

6. Describe biological factors underlying abnormal behaviour.

4 Marks Answer:

Faulty genes, endocrine imbalances, malnutrition, injuries interfere development.
Neurotransmitter issues: GABA low anxiety, dopamine excess schizophrenia.
Serotonin low depression; genetic links to schizophrenia/intellectual disability.
No single gene; multiple combine for behaviours/dysfunctions.
Biology alone insufficient; interacts with psychological/social factors.

7. Explain the psychodynamic model of abnormality.

4 Marks Answer:

Behaviour determined by unconscious psychological forces/interactions.
Symptoms result from conflicts between these forces; symbolic expression.
Freud: Id (instincts), ego (rational), superego (moral); traced to childhood.
Dynamic forces shape thoughts/emotions/behaviour.
Oldest modern model; basis for therapy exploring unconscious.

8. What is the behavioural model?

4 Marks Answer:

Normal/abnormal behaviours learned; maladaptive via faulty learning.
Conditioning: Classical (association), operant (reward), social (imitation).
What learned can be unlearned; focus on changing behaviours.
Explains disorders as result of environmental reinforcements.
Therapy: Behaviour modification techniques like extinction.

9. Describe socio-cultural factors in abnormality.

4 Marks Answer:

War/violence/prejudice/economic problems/social change cause stress.
Enmeshed families overinvolved; difficulty independence.
Isolation/lack support leads depression; longer recovery.
Labels/roles encourage sick role; deviant viewed crazy.
Understood in light of societal forces/networks/conditions.

10. Explain the diathesis-stress model.

4 Marks Answer:

Biological diathesis (predisposition, e.g., inherited aberration).
Vulnerability to develop disorder if exposed to stressors.
Pathogenic stressors trigger psychopathology in at-risk persons.
Applied to anxiety/depression/schizophrenia.
Widely accepted; combines biology/environment.

Part C: 6 Marks Questions (10 Qs - Long, Exactly 8 Lines Each)

1. Discuss the introduction to psychological disorders and their mystification.

6 Marks Answer:

People often unhappy/troubled; minds/hearts sorrow/unrest/tension.
Life feels painful/struggle; sometimes not worth living (Jung shadow quote).
Normal anxiety (exams/career/illness) motivates; extreme indicates disorder.
Studied 2,500+ years; mystified cultures; uncomfortable/frightening.
Unhappiness/anxiety/unrealised potential global; adaptation failures.
Maladaptive when can't modify behaviour to situation needs.
Abnormal psychology: Causes/consequences/treatment maladaptive.
View as illness; reduce stigma/hesitation for help.

2. Elaborate on the historical background including key eras.

6 Marks Answer:

Supernatural: Evil spirits/exorcism/shaman; ancient recurring.
Biological: Body/brain processes; correct defects improve functioning.
Psychological: Thinking/feeling/perception inadequacies.
Greece: Hippocrates conflicts; Galen humours (blood/biles/phlegm).
Indian: Doshas vata/pitta/kapha similar Atharva Veda/Ayurveda.
Middle Ages: Demonology/witch-hunts; Augustine anguish/conflict.
Renaissance: Weyer psychological/interpersonal for witches.
Age Reason: Scientific/reform/deinstitutionalisation/community.

3. Discuss classifications and their usefulness.

6 Marks Answer:

List categories grouped shared characteristics.
Enable communication among professionals (psychologists/psychiatrists).
Help understand causes/processes development/maintenance.
DSM-5: APA discrete criteria presence/absence.
ICD-10: WHO Behavioural/Mental; symptoms/guidelines; India use.
Useful for diagnosis/treatment planning/research.
Debate: Stigmatising labels vs. necessary categorisation.
Updated versions reflect evolving understanding.

4. Explain psychological factors and models.

6 Marks Answer:

Maternal deprivation/rejection/overprotection/faulty discipline.
Maladaptive families/severe stress contribute.
Psychodynamic: Unconscious conflicts id/ego/superego; childhood trace.
Behavioural: Learned maladaptive; classical/operant/social conditioning.
Cognitive: Irrational assumptions/illogical thinking/overgeneralisation.
Humanistic-Existential: Avoid responsibility; inauthentic/dysfunctional.
Interact with biological/social; therapy targets.
Evidence: Parent-child relations disorders.

5. Describe anxiety disorders with types.

6 Marks Answer:

Diffuse/vague/unpleasant fear/apprehension; symptoms heart rate/breath/diarrhoea.
Generalised: Prolonged unexplained fears/hypervigilance/motor tension.
Panic: Recurrent abrupt intense terror; thoughts unpredictable.
Phobias: Irrational specific/social/agoraphobia; develop gradually.
Specific: Animal/enclosed; social: Embarrassment others.
Agoraphobia: Fear unfamiliar/public; avoid entering.
Most common category; interfere functioning.
Ex: Deb's panic driving; hesitant outdoors.

6. Explain obsessive-compulsive and related disorders.

6 Marks Answer:

Obsessions: Persistent unwanted thoughts/anxieties.
Compulsions: Repetitive behaviours/rituals reduce anxiety.
OCD: Cycle obsessions trigger compulsions temporary relief.
Related: Hoarding/body dysmorphic/trichotillomania.
Interfere daily life; time-consuming/distressing.
Psychological: Learned/cognitive distortions.
Treatment: Exposure response prevention/CBT.
Ex: Checking locks repeatedly fear burglary.

7. Discuss trauma- and stressor-related disorders.

6 Marks Answer:

Develop after traumatic event exposure.
PTSD: Re-experiencing (flashbacks/nightmares), avoidance, hyperarousal.
Acute stress: Similar short-term post-trauma.
Adjustment: Stressors like loss/divorce; emotional/behavioural symptoms.
Biological: HPA axis dysregulation.
Psychological: Unresolved trauma memories.
Treatment: EMDR/trauma-focused CBT.
Ex: Accident survivor avoids driving.

8. Describe somatic symptom and dissociative disorders.

6 Marks Answer:

Somatic: Physical symptoms no medical basis (Box 4.1).
Illness anxiety: Fear disease despite reassurance.
Conversion: Sensory/motor loss psychological (e.g., paralysis).
Dissociative: Disruption consciousness/identity/memory.
Amnesia: Memory loss events; fugue: Identity/travel loss.
Identity: Multiple personalities alternate control.
Depersonalisation: Detached from self/reality.
Ex: Trauma escape via dissociation.

9. Explain depressive and bipolar disorders.

6 Marks Answer:

Depressive: Persistent sadness/loss interest/pleasure.
Major depressive: Hopelessness/worthlessness/suicidal thoughts.
Causes: Serotonin low/genetic/stress/loss.
Bipolar: Cycles depression/mania; related disorders.
Mania: Elevated mood/grandiosity/less sleep/impulsivity.
Biological: Neurotransmitter imbalances.
Treatment: Antidepressants/mood stabilisers/therapy.
Ex: Manic spending sprees/depressive withdrawal.

10. Discuss schizophrenia spectrum and psychotic disorders.

6 Marks Answer:

Psychotic: Loss reality contact; delusions/hallucinations.
Schizophrenia: Disorganised thought/speech/behaviour/negative symptoms.
Delusions: False beliefs (persecution/grandeur).
Hallucinations: Sensory perceptions absent (auditory common).
Negative: Avolition/apathy/flat affect.
Causes: Dopamine excess/genetic/brain abnormalities.
Treatment: Antipsychotics/therapy/rehab.
Ex: Hearing voices commanding actions.

Tip: Diagrams for models; practice lines. Additional 30 Qs: Variations on factors, disorders.

Key Concepts - In-Depth Exploration

Core ideas with examples, pitfalls, interlinks. Expanded: All concepts with steps/examples/pitfalls for easy learning. Depth: Debates, analysis.

Four Ds of Abnormality

Steps: 1. Check deviance norms, 2. Assess distress upset, 3. Evaluate dysfunction daily, 4. Identify danger harm. Ex: Bizarre behaviour. Pitfall: Cultural ignore. Interlink: Classifications. Depth: Starting point no ideal model.

Social Deviation View

Steps: 1. Identify societal norms, 2. Compare behaviour, 3. Label if breaks. Ex: Aggressive cooperation society. Pitfall: Norms change/time. Interlink: Socio-cultural factors. Depth: Conformity not always normal.

Maladaptive View

Steps: 1. Check well-being interference, 2. Assess growth hindrance, 3. Identify vulnerability/stress. Ex: Silence questions. Pitfall: Ignore context. Interlink: Diathesis-stress. Depth: Best criterion functioning.

Supernatural Approach

Steps: 1. Identify evil possession, 2. Exorcise/pray, 3. Shaman communicate. Ex: Bhoot-pret. Pitfall: No scientific. Interlink: Historical. Depth: Recurring non-Western.

Biological Approach

Steps: 1. Detect body/brain issue, 2. Link neurotransmitter/behaviour, 3. Treat correct. Ex: Dopamine schizophrenia. Pitfall: Ignore psycho-social. Interlink: Diathesis. Depth: Organic basis evidence.

Psychological Approach

Steps: 1. Identify thinking/feeling flaw, 2. Trace childhood/conflicts, 3. Therapy resolve. Ex: Irrational cognitive. Pitfall: Subjective. Interlink: Models. Depth: Inadequacies cause.

Bio-Psycho-Social Model

Steps: 1. Assess biological predisposition, 2. Psychological conflicts, 3. Social stressors, 4. Interact outcome. Ex: Integrated treatment. Pitfall: Complex measure. Interlink: Modern. Depth: Convergence factors.

DSM-5/ICD-10

Steps: 1. Match symptoms criteria, 2. Diagnose presence/absence, 3. Guide treatment. Ex: Anxiety category. Pitfall: Cultural bias. Interlink: Disorders. Depth: Standard communication.

Diathesis-Stress Model

Steps: 1. Identify diathesis inheritance, 2. Vulnerability risk, 3. Stressors trigger, 4. Develop disorder. Ex: Genetic + trauma schizophrenia. Pitfall: Not all vulnerable. Interlink: Factors. Depth: Widely accepted.

Anxiety Disorders

Steps: 1. Vague fear symptoms, 2. Types generalised/panic/phobias, 3. Interfere functioning. Ex: Deb panic. Pitfall: Normal vs. extreme. Interlink: Stressors. Depth: Common diffuse.

OCD Related

Steps: 1. Obsessions thoughts, 2. Compulsions behaviours, 3. Cycle anxiety relief. Ex: Checking rituals. Pitfall: Time-consuming. Interlink: Behavioural model. Depth: Repetitive persistent.

Trauma-Stressor

Steps: 1. Exposure event, 2. Re-experience/avoid/arouse, 3. Impair daily. Ex: PTSD flashbacks. Pitfall: Not all traumatised. Interlink: Diathesis. Depth: Post-event.

Somatic/Dissociative

Steps: 1. Physical no cause/identity disrupt, 2. Anxiety/conversion/amnesia. Ex: Fugue travel. Pitfall: Misdiagnose medical. Interlink: Psychological. Depth: Body/mind split (Box 4.1).

Depressive/Bipolar

Steps: 1. Low mood/loss interest, 2. Cycles mania/depression. Ex: Suicidal/hopeless. Pitfall: Normal sadness vs. disorder. Interlink: Serotonin. Depth: Mood extremes.

Schizophrenia

Steps: 1. Positive delusions/hallucinations, 2. Negative avolition, 3. Disorganised thought. Ex: Voices. Pitfall: Cultural misinterpret. Interlink: Dopamine. Depth: Reality loss.

Neurodevelopmental

Steps: 1. Early onset deficits, 2. Intellectual/ADHD/autism. Ex: Learning issues. Pitfall: Late diagnosis. Interlink: Genetic. Depth: Developmental delays.

Disruptive/Impulse

Steps: 1. Aggression/rule-break, 2. Conduct/oppositional. Ex: Defiant. Pitfall: Normal rebellion. Interlink: Social. Depth: Control lack.

Feeding/Eating

Steps: 1. Disturbed eating, 2. Anorexia/bulimia/binge. Ex: Weight fear. Pitfall: Diet culture. Interlink: Body image. Depth: Nutrition issues.

Substance Addictive

Steps: 1. Abuse/dependence, 2. Tolerance/withdrawal. Ex: Alcohol effects (Box 4.2). Pitfall: Recreational vs. disorder. Interlink: Dopamine. Depth: Commonly abused (Box 4.3).

Advanced: Disorder timelines, prevalence graphs. Pitfalls: Label stigma. Interlinks: Ch5 therapy. Real: Pandemic disorders. Graphs: Anxiety types. Coherent: Evidence → Interpretation. For easy: Steps analogies (diathesis as seed/stress rain).

Historical Perspectives - Detailed Guide

Timeline of concepts/evolutions; expanded with points; links to pioneers/debates. Added Galen, Weyer focus.

Ancient (Pre-Modern)

Supernatural: Spirits/shaman; exorcism.
Greece: Hippocrates reason/emotion; Galen humours.

Depth: Doshas similarity India.

Middle Ages

Demonology/witch-hunts; evil possession.
Augustine anguish/conflict psychodynamic base.

Depth: Charity spirit.

Renaissance (1500s)

Humanism/curiosity; Weyer psychological for witches.
Interpersonal disturbed causes.

Depth: Medical over theological.

Age of Reason (17th-18th)

Scientific/faith replace; reform compassion.
Asylums reform/deinstitutionalisation.

Depth: Community care inclination.

Modern (19th+)

Bio-psycho-social convergence.
DSM/ICD classifications.

Depth: Interactional outcomes.

Debates: Models

Supernatural vs. scientific; biological reductionism.
Stigma vs. illness view.

Depth: What-if no reform.

Tip: Link Galen to modern neurotransmitters, Weyer to therapy. Depth: Activities historical reflection. Examples: Witch-hunts stigma. Graphs: Views evolution timeline. Advanced: Post-2020 teletherapy. Easy: Bullets impacts.

Solved Examples - From Text with Simple Explanations

Expanded with evidence, calcs; focus on applications, analysis. Added model comparisons, disorder examples.

Example 1: Four Ds Application

Simple Explanation: Identify abnormality.

Step 1: Deviance check unusual.
Step 2: Distress upset assess.
Step 3: Dysfunction daily interfere.
Step 4: Danger harm evaluate.
Simple Way: Checklist for label.

Example 2: Diathesis-Stress

Simple Explanation: Disorder onset.

Step 1: Genetic diathesis.
Step 2: Vulnerability build.
Step 3: Stressor trigger.
Step 4: Disorder develop.
Simple Way: Seed + rain = plant.

Example 3: Anxiety Panic

Simple Explanation: Deb case.

Step 1: Heart/breath symptoms.
Step 2: Fear crazy/die.
Step 3: Avoid driving.
Step 4: Indoor refuse.
Simple Way: Surge terror cycle.

Example 4: Schizophrenia Symptoms

Simple Explanation: Reality loss.

Step 1: Delusions false beliefs.
Step 2: Hallucinations senses.
Step 3: Disorganised thought.
Step 4: Negative avolition.
Simple Way: Broken reality puzzle.

Example 5: Substance Abuse

Simple Explanation: Alcohol effects.

Step 1: Tolerance increase dose.
Step 2: Withdrawal symptoms.
Step 3: Dependence craving.
Step 4: Health damage.
Simple Way: Cycle addiction trap.

Example 6: Models Comparison

Simple Explanation: Explain abnormality.

Step 1: Biological brain.
Step 2: Psychological mind.
Step 3: Social environment.
Step 4: Integrated all.
Simple Way: Pieces whole picture.

Tip: Practice case apply; troubleshoot (e.g., why not biological alone?). Added for models, disorders.

Quick Revision Notes & Mnemonics

Concise for all subtopics; mnemonics. Covers intro, abnormality concepts, history, classification, factors, models, major disorders.

Introduction/Abnormality

Maladaptive adaptation failure; stigma illness view ( "MAFS" - MAFS). Four Ds: Dev/Dist/Dys/Dang ( "4D" - 4D).

Social/Maladaptive Views

Social: Norms break; maladaptive: Well-being interfere ( "SNMW" - SNMW).

Historical

Sup/Bio/Psy approaches; Greece humours; Middle demon; Ren human; Reason reform ( "SBPG MDR R" - SBPG MDR R).

Classification

DSM-5 criteria; ICD-10 guidelines ( "DCIG" - DCIG).

Factors/Models

Bio: Neuro/gene; Psy: Psychodyn/Behav/Cog/Hum-Ex ( "BPN PBCH" - BPN PBCH). Socio: Stress/label; Diathesis-Stress ( "SSDS" - SSDS).

Anxiety/OCD/Trauma

Anx: Gen/Pan/Pho; OCD obs/comp; Trauma PTSD ( "AGP OCP TP" - AGP OCP TP).

Somatic/Dissociative

Som: Phys no cause; Diss: Mem/id disrupt ( "SPND MID" - SPND MID).

Depressive/Bipolar

Dep: Sad/loss; Bip: Mania/dep cycles ( "SL MDC" - SL MDC).

Schizophrenia/Neurodev

Schiz: Del/hal/neg; Neuro: Int/ADHD/aut ( "DHN IAA" - DHN IAA).

Disruptive/Feeding/Substance

Dis: Agg/rule; Feed: Ano/bul/binge; Sub: Abuse/dep ( "ARB ABB AD" - ARB ABB AD).

Overall Mnemonic: "Intro Ab Hist Class Fact Mod Anx OCD Tra Som Diss Dep Bip Sch Neuro Dis Feed Sub" (IAHC FM AOT SDS DB SN DFS). Flashcards: One per subtopic. Easy: Bullets, bold keys; steps acronyms.

Key Terms & Processes - All Key

Expanded table 40+ rows; quick ref. Added advanced (e.g., 4 Ds, Diathesis-Stress).

Term/Process	Description	Example	Usage
Four Ds	Deviance/distress/dysfunction/danger	Extreme upsetting interfere harm	Identify abnormality
Social Deviation	Breaks norms	Aggressive cooperation	Cultural label
Maladaptive	Well-being interfere	Silence questions	Functional criterion
Stigma	Shame illness	Hesitant help	Barrier treatment
Supernatural Approach	Evil possession	Exorcism shaman	Historical view
Biological Approach	Body brain defects	Neurotransmitter imbalance	Medical basis
Psychological Approach	Thinking feeling flaws	Irrational assumptions	Therapy focus
Humours Theory	Four fluids balance	Black bile melancholy	Ancient temperament
Demonology	Evil hunts	Middle Ages witches	Superstition
Reform Movement	Deinstitutionalisation	Community care	Humane shift
Bio-Psycho-Social	Interaction factors	Integrated treatment	Modern model
DSM-5	Criteria presence	Anxiety diagnosis	Clinical standard
ICD-10	Guidelines symptoms	India use	Global classification
Biological Factors	Genes neurotransmitters	Dopamine schizophrenia	Organic causes
Psychodynamic Model	Unconscious conflicts	Id ego superego	Freud symbolic
Behavioural Model	Learned maladaptive	Conditioning unlearn	Environmental
Cognitive Model	Irrational thoughts	Overgeneralisation	Thinking errors
Humanistic-Existential	Avoid responsibility	Inauthentic lives	Self-actualise
Socio-Cultural Factors	Stress prejudice	Enmeshed families	Social networks
Diathesis-Stress	Predisposition trigger	Genetic stress	Interaction model
Anxiety Disorders	Fear apprehension	Heart breath	Common vague
Panic Disorder	Recurrent terror	Abrupt surge	Intense fear
Phobias	Irrational fears	Specific social	Avoid triggers
OCD	Obsessions compulsions	Cycle relief	Repetitive
PTSD	Trauma re-experience	Flashbacks	Stressor-related
Somatic Symptom	Physical no cause	Illness anxiety	Body focus
Dissociative	Identity disrupt	Amnesia fugue	Escape trauma
Depressive	Sadness loss	Hopeless suicidal	Mood low
Bipolar	Mania depression	Elevated cycles	Mood swings
Schizophrenia	Delusions hallucinations	Disorganised	Psychotic
Neurodevelopmental	Early deficits	ADHD intellectual	Developmental
Disruptive	Aggression rules	Conduct defiant	Impulse control
Feeding	Eating disturbances	Anorexia bulimia	Body image
Substance	Abuse dependence	Alcohol opioids	Addictive
Neurotransmitters	Chemical messengers	GABA anxiety	Biological
Enmeshed Structure	Overinvolved family	Independence difficulty	Socio-cultural
Pathogenic Stressors	Trigger factors	Diathesis onset	Psychopathology
Hypervigilance	Danger scan	Generalised anxiety	Symptom
Negative Symptoms	Loss functions	Avolition schizophrenia	Psychotic
Delusions	False beliefs	Persecution	Schizophrenia