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Collective and Crowd Behaviour — Previous Year Questions

📊 Topic Overview​

MetricValue
Total Appearances16 (5.7% of all questions)
Priority🔴 HIGH — appears in 12 of 14 years
Section DistributionSec A: 10
Most Repeated QuestionCrowd behaviour and theories (9 times)
Session PatternHeavier in June sessions
ProbabilityHigh

🎯 Must-Know Concepts​

  1. Definition and characteristics of crowd behaviour
  2. Types of crowds (casual, conventional, expressive, acting)
  3. Theories of crowd behaviour: Le Bon, Allport, Turner-Killian (Emergent Norm Theory)
  4. Collective behaviour — forms (rumour, panic, mob, riot, social movement)
  5. Deindividuation and contagion in crowds

🔥 Most Repeated Question: Crowd Behaviour and Theories of Crowd Behaviour (9 appearances)​

Appeared in: 2012-June, 2014-Dec, 2015-June, 2016-June, 2017-June, 2018-June, 2019-Dec, 2021-June, 2022-June, 2024-June

Answer (Section A — ~450 words):​

A crowd is a temporary collection of people who share a common focus of attention and whose members influence each other's behaviour. Crowd behaviour differs markedly from individual behaviour, often exhibiting intensity, emotionality, and actions individuals would not perform alone.

Characteristics of Crowd Behaviour: Anonymity (individuals feel unidentifiable), contagion (emotions and behaviours spread rapidly through the crowd), suggestibility (individuals are unusually open to suggestion), deindividuation (loss of individual self-awareness and personal responsibility), and impulsivity (behaviour is driven by immediate stimuli rather than deliberate reasoning).

Types of Crowds (Blumer, 1939): Casual crowd: People briefly sharing a location without interaction (e.g., pavement crowd). Low cohesion. Conventional crowd: People assembled for a specific purpose with norms governing behaviour (e.g., sports spectators, concert audience). Expressive crowd: People gathered to express emotions (e.g., religious gatherings, carnivals). Emotions are the primary output. Acting crowd: A crowd oriented toward a concrete goal, sometimes becoming a mob or riot.

Theories of Crowd Behaviour:

1. Le Bon's Group Mind Theory (1895) Gustave Le Bon proposed that crowds create a collective mind in which individual personalities submerge. Three mechanisms explain crowd transformation: anonymity (irresponsibility, power from numbers), contagion (emotions spread like a disease through the crowd), and suggestibility (individuals in crowds are highly susceptible to suggestion from leaders). Le Bon viewed crowd behaviour as inherently irrational and dangerous. However, his theory has been criticised for being ideologically biased (denigrating working-class collective action) and empirically unsupported — crowd behaviour is often rational and purposive.

2. Allport's Individualistic Theory Floyd Allport rejected the concept of a group mind, arguing that crowd behaviour is simply the product of social facilitation — the presence of others intensifies individual responses. Crowd members respond to the same stimuli and their responses are intensified by the visible reactions of others. No special collective psychology is needed.

3. Turner and Killian's Emergent Norm Theory (1957) Turner and Killian proposed that crowds are not homogeneous, mindless entities but contain diverse individuals. As a crowd gathers, new norms emerge through social interaction that define appropriate behaviour in this novel situation. Key individuals (keynoters) propose actions; others adopt them, creating an impression of unanimity. This theory explains why crowds sometimes behave constructively (rescue operations) and sometimes destructively (riots) — depending on which norms emerge.

Deindividuation (Zimbardo, 1969): Deindividuation — the loss of self-awareness and personal identity in group settings — increases anti-normative behaviour. Conditions that promote deindividuation include anonymity, arousal, diffusion of responsibility, and novel situations. Diener's research found that deindividuated Halloween trick-or-treaters stole more.

In conclusion, crowd behaviour is shaped by anonymity, contagion, and emergent social norms. Contemporary research views crowds as differentiated social settings with their own emerging norms rather than mindless mobs.

📝 Other Questions​

Differentiate collective behaviour from crowd behaviour. Discuss forms of collective behaviour (Section B — ~250 words)​

Collective Behaviour is a broad category encompassing all relatively spontaneous, unstructured social action by large numbers of people responding to a common stimulus. It includes crowd behaviour but also extends to dispersed phenomena like rumours, fashions, social movements, and panics.

Crowd Behaviour is a subset of collective behaviour occurring when people are physically co-present — the spatial dimension is essential. Face-to-face interaction, contagion, and immediate situational cues characterise crowd dynamics.

Key Difference: Collective behaviour can involve spatially dispersed individuals (e.g., a stock market panic, internet rumours), whereas crowd behaviour requires physical assembly.

Forms of Collective Behaviour:

Rumour: Unverified information passed from person to person. Spreads when: official information is unavailable, the topic is important, and anxiety is high (Allport and Postman, 1947). Rumour undergoes levelling (detail reduced), sharpening (selected details emphasised), and assimilation (distorted to fit existing schemas).

Panic: Acute, irrational flight behaviour triggered by perceived severe, immediate threat with limited escape routes. Mob*: An acting crowd with a specific, often aggressive, target. Organised by leaders or keynoters. Historically: lynching mobs, vigilante groups.

Riot: Violent collective behaviour characterised by property destruction and physical attack; often triggered by accumulated frustration and a precipitating event.

Social Movement: Organised, sustained collective action aimed at social change. Unlike mobs and riots, social movements are planned, have leadership structures, and pursue long-term goals.

🧠 Memory Aids​

Crowd Types (CCEA): Casual, Conventional, Expressive, Acting

Crowd Theories (LAE): Le Bon (group mind), Allport (social facilitation), Emergent norm (Turner-Killian)

📚 Related Content​

✅ Self-Assessment​

  1. What three mechanisms explain crowd transformation in Le Bon's theory?
  2. How does emergent norm theory (Turner-Killian) differ from Le Bon's group mind theory?
  3. What conditions promote deindividuation and its effects?
  4. How does a mob differ from a riot?
  5. What processes do rumours undergo as they pass from person to person?

💡 Exam Tips​

  • Section A: Define crowd → characteristics → types (4) → theories (Le Bon, Allport, Emergent Norm) → deindividuation → conclusion.
  • Emergent norm theory is the most sophisticated and contemporary — develop it in the most detail.
  • June papers favour crowd behaviour — if appearing in June exam, this is a high-probability topic.