Skip to content
Psychology · Year 10

Active learning ideas

Prosocial Behaviour and Crowd Psychology

This topic explores how our behaviour changes when we are part of a group or a crowd. Students learn about prosocial behaviour, such as bystander intervention, and the factors that prevent people from helping, like diffusion of responsibility. They also examine the darker side of group dynamics: deindividuation and crowd behaviour.

National Curriculum Attainment TargetsGCSE Psychology (AQA) 3.2.2.5: Prosocial behaviourGCSE Psychology (AQA) 3.2.2.6: Crowd and collective behaviour
20–50 minPairs → Whole Class3 activities

Activity 01

Simulation Game50 min · Small Groups

Simulation Game: The Bystander Effect

Stage a 'dropped books' scenario in different parts of the school with varying numbers of people present. Students record how long it takes for someone to help and then analyse the results using the concept of 'diffusion of responsibility.'

What is the bystander effect?
ApplyAnalyzeEvaluateCreateSocial AwarenessDecision-Making
Generate Complete Lesson

Activity 02

Gallery Walk35 min · Small Groups

Gallery Walk: Deindividuation in History

Display images of crowds in various contexts: sports fans, protesters, and historical riots. Students move around to identify signs of deindividuation (like uniforms or masks) and discuss how these factors changed the individuals' behaviour.

Why do people behave differently in crowds?
UnderstandApplyAnalyzeCreateRelationship SkillsSocial Awareness
Generate Complete Lesson

Activity 03

Think-Pair-Share20 min · Pairs

Think-Pair-Share: Encouraging Prosocial Behaviour

Students are given a scenario where someone needs help. They must work in pairs to come up with three specific ways to 'break' the bystander effect and encourage others to intervene, based on psychological principles.

How can prosocial behaviour be encouraged?
UnderstandApplyAnalyzeSelf-AwarenessRelationship Skills
Generate Complete Lesson

A few notes on teaching this unit


Watch Out for These Misconceptions

  • People don't help in emergencies because they are selfish or uncaring.

    Often, people don't help because of 'pluralistic ignorance' (looking to others to see if it's a real emergency) or 'diffusion of responsibility.' A role-play of an ambiguous emergency can help students experience these social pressures.

  • Being in a crowd always leads to violence or bad behaviour.

    Crowds can also foster prosocial behaviour, such as in peaceful protests or community events. A collaborative investigation into 'positive deindividuation' can show how group identity can sometimes lead to heroic or helpful acts.


Methods used in this brief