Introduction to Sherif's study

Sherif's Robbers Cave experiment, conducted in 1954 and published in 1961, is a famous field study in social psychology. It explores how prejudice - negative attitudes or beliefs towards a group based on their membership - can develop between groups and how it might be reduced. The study took place in a natural setting to observe real behaviours, providing insights into social identity theory, which suggests that simply dividing people into groups can lead to in-group favouritism and out-group hostility. An in-group is the group someone belongs to, while an out-group is any other group perceived as different.

Aims of the study

Sherif designed the experiment with two main aims, focusing on the formation and reduction of prejudice through group dynamics.

Aim 1: Creating prejudice through conflict

Sherif wanted to investigate whether dividing boys into groups and introducing competition would lead to prejudice. He hypothesised that this in-group/out-group situation would naturally result in hostility and negative stereotypes.

Aim 2: Reducing prejudice through cooperation

Sherif also aimed to test if setting a shared goal that required both groups to work together could decrease the prejudice that had developed.

Participants in the study

The participants were carefully selected to ensure they represented a typical group, allowing the results to focus on the effects of group dynamics rather than individual differences.

Key details about participants

• Number and demographics - Twenty-two boys, all aged 11, male, and white.
• Selection process - The boys were randomly assigned to two groups to avoid bias.

Procedures of the study

The experiment unfolded over three weeks at Robbers Cave State Park in Oklahoma, structured in distinct phases to build and then resolve intergroup conflict. Researchers observed behaviours while acting as camp counsellors.

Phase 1: Group formation

• For the first week, the two groups were kept separate and unaware of each other.
• Each group engaged in normal camp activities, developing their own identities: one group named themselves the 'Rattlers' and the other the 'Eagles'.
• This phase allowed natural in-group bonds to form, creating loyalty within each group.

Phase 2: Introducing conflict

• The groups were then made aware of each other, leading to feelings of territorial invasion.
• Researchers created competition through a tournament with games like baseball and tug-of-war, where points were awarded and prizes given to the winning team's members.
• This setup encouraged loyalty to the in-group and hostility towards the out-group, as predicted.

Phase 3: Initial attempts to reduce prejudice

• Simple contact was tried first, bringing the groups together for shared activities like meals.
• However, this increased tension, with more arguments and negative interactions.

Phase 4: Superordinate goals

• To promote cooperation, researchers introduced superordinate goals - tasks that required both groups' combined efforts to succeed, as neither could achieve them alone.
• First task: Fixing a 'broken' water supply. The groups initially searched separately but met at the water tank and worked together to repair it, leading to better interactions.
• Second task: Pulling a stuck truck out of the mud, which required all boys to collaborate physically.

These procedures progressively built from isolation to conflict and finally to resolution, allowing Sherif to observe changes in behaviour.

Results of the study

The results showed clear patterns in how prejudice developed and diminished, supported by observations and data collected by the researchers.

Development of prejudice during conflict

• Hostility and stereotyping - During the tournament, negative stereotyping emerged: each group described the other as 'sneaks, smart alecks, and stinkers', while viewing their own as 'brave, tough, and friendly'.
• Aggressive behaviours - Actions included burning the other group's flag and raiding camps, demonstrating out-group hostility.
• Name-calling - Counsellors counted increased use of negative words when referring to the out-group.

Effects of initial contact

Bringing groups together without a shared purpose worsened relations, leading to more conflicts rather than resolution.

Impact of superordinate goals

• Reduced hostility - After cooperating on tasks like fixing the water supply and freeing the truck, name-calling decreased, and fewer negative traits were used to describe the out-group.
• Friendship patterns - Friendship surveys showed a shift: during the hostility phase, 93% of friendships were within the in-group; after cooperation, 30% crossed group lines.
• Overall atmosphere - A friendly environment developed, with less prejudice observed.

These results highlight how competition fueled prejudice, while shared goals promoted harmony.

Conclusions and implications

Sherif's study provides valuable insights into the causes of prejudice and strategies for reducing it, with broader applications in social psychology.

Key conclusions

• Formation of prejudice - Simply creating groups leads to in-group loyalty and out-group prejudice, supporting social identity theory. Competition intensifies this, as seen in the hostility during the tournament.
• Reducing prejudice - Superordinate goals effectively decrease prejudice by requiring cooperation, whereas mere contact can exacerbate issues.
• Real-world applications - The findings suggest ways to reduce prejudice that has been formed between two groups.

Evaluation of the study

Strengths:

• High ecological validity due to the natural camp setting, making results applicable to real life.
• The controlled phases allowed clear cause-and-effect observations.

Limitations:

• The sample was limited to white, middle-class boys, reducing generalisability to other ages, genders, or cultures.
• Ethical concerns include the deliberate creation of conflict, which caused distress, though it was resolved.

Overall, this study underscores that prejudice can arise from group divisions and competition but can be mitigated through collaborative goals.