Social identity, stereotyping and prejudice: Tajfel, in-group bias and reducing conflict (QCE Psychology Unit 4)
“Explain social identity theory with reference to social categorisation, social identification and social comparison; Describe the formation of prejudice in terms of: scapegoating, direct experience and personal prejudice, group prejudice, and the prejudiced personality; Contrast prejudice and discrimination”
Social identity theory (Tajfel and Turner) says people derive part of their self-concept from group membership and boost self-esteem by favouring their in-group over out-groups. It works through three steps: social categorisation, social identification and social comparison. Stereotyping (beliefs), prejudice (attitudes) and discrimination (behaviour) follow. Tajfel's minimal group studies showed in-group bias arises from mere categorisation. Prejudice can form through scapegoating, direct experience and personal prejudice, group prejudice (conforming to the group's norms) and the prejudiced (authoritarian) personality. Contact, superordinate goals and equal status can reduce conflict.
Jump to a section
Social identity theory and prejudice are Unit 4 Topic 3 (Attitudes) subject matter in the QCAA Psychology 2025 syllabus. Reducing prejudice through intergroup contact is Unit 4 Topic 4 (Cross-cultural psychology) subject matter.
What this dot point is asking
QCAA wants you to explain how simply belonging to a group can lead people to favour their own group and discriminate against others. You need Tajfel and Turner's social identity theory and its three psychological steps, clear definitions distinguishing stereotyping, prejudice and discrimination, and an evaluation of evidence-based strategies for reducing intergroup conflict. Use named studies.
The answer
Group membership shapes not only how we treat others but how we see ourselves. Social identity theory explains how the simple act of belonging to a group can generate favouritism, bias and ultimately prejudice and discrimination.
Social identity theory
Henri Tajfel and John Turner proposed that people have both a personal identity and a social identity drawn from the groups they belong to. Because people want positive self-esteem, they are motivated to see their own group (the in-group) as better than other groups (out-groups). The theory unfolds in three steps.
- Social categorisation. We sort people, including ourselves, into groups (us and them). This is a natural cognitive shortcut.
- Social identification. We adopt the identity of the group we belong to and take on its norms, gaining self-esteem from membership.
- Social comparison. We compare our in-group favourably against out-groups to maintain a positive social identity, which produces in-group bias.
The minimal group studies
Tajfel's minimal group experiments showed how little it takes to produce in-group favouritism. Participants were divided into meaningless groups (for example, by a coin toss or preference for one artist over another) with no contact, no conflict and nothing to gain personally. Even so, they consistently allocated more resources to anonymous members of their own group. This demonstrated that mere categorisation, with no history or competition, is enough to trigger in-group bias.
Stereotyping, prejudice and discrimination
These three terms are related but distinct, and examiners reward precise separation.
- Stereotyping is a cognitive process: a generalised belief about the characteristics of a group, applied to its members.
- Prejudice is an attitude: a usually negative pre-judgement of a person based on their group membership, with an emotional component.
- Discrimination is a behaviour: the unfair treatment of a person based on their group membership.
A useful link is the tri-component model of attitudes: stereotyping is the cognitive component, prejudice the affective component, and discrimination the behavioural component.
How prejudice forms
The 2025 syllabus names four ways prejudice can form:
- Scapegoating: blaming an outgroup, usually one with less power, for problems it did not cause. Frustration (for example, during unemployment or economic hardship) is redirected onto a convenient target, such as blaming migrants for a shortage of jobs.
- Direct experience and personal prejudice: a negative personal encounter with one or a few members of a group is generalised to the whole group (direct experience), and prejudice can also grow when members of an outgroup are seen as a threat to one's own interests, such as competition for jobs or housing (personal prejudice).
- Group prejudice: a person adopts the prejudiced attitudes of the groups they belong to, such as family, friends or a community, because conforming to the group's norms brings acceptance. This links to socialisation and conformity in Topic 1.
- The prejudiced personality: some individuals are more prone to prejudice across many groups. Adorno and colleagues (1950) described an authoritarian personality: rigid, conventional, deferential to authority and hostile to outgroups, which they linked to a harsh, punitive upbringing.
Prejudice (an attitude) should be kept distinct from discrimination (behaviour): a person can hold a prejudice without acting on it, and discrimination can occur through rules or systems even when individuals are not consciously prejudiced.
Reducing intergroup conflict
Psychology offers evidence-based strategies for reducing prejudice and discrimination. In the 2025 syllabus these belong to Topic 4, where they are covered in more depth on our immigration, acculturation and reducing prejudice page.
- Intergroup contact. Bringing groups together can reduce prejudice, but only under conditions identified by Allport: equal status, common goals, cooperation and institutional support. Contact without these can worsen hostility.
- Superordinate goals. Shared goals that require both groups to cooperate were shown to reduce conflict in Sherif's Robbers Cave study, where rival boys' groups were reconciled by tasks that needed joint effort.
- Recategorisation. Encouraging people to see a larger, shared in-group (we are all one team) reduces the us-and-them division.
- Education and mutual contact can challenge stereotypes by providing disconfirming information.
Social identity theory runs through three steps: social categorisation, social identification and social comparison. Tajfel's minimal group studies proved that mere categorisation, with no contact or competition, is enough to produce in-group favouritism. Keep stereotyping (belief), prejudice (attitude) and discrimination (behaviour) separate; they map onto the cognitive, affective and behavioural components of an attitude.
Putting it together for an exam
A strong answer names the theory and its three steps, uses the minimal group finding as evidence, distinguishes the three key terms, and proposes a named reduction strategy with its conditions. For example: in-group bias arises through social comparison (social identity theory), as shown by Tajfel's minimal groups, and can be reduced through superordinate goals as in Sherif's Robbers Cave study.
- Blurring stereotyping, prejudice and discrimination
- Stereotype is a belief, prejudice is an attitude, discrimination is a behaviour. Examiners check this distinction.
- Saying prejudice needs real competition
- The minimal group studies show mere categorisation alone produces in-group bias, without any competition or contact.
- Claiming contact always reduces prejudice
- Contact only helps under Allport's conditions: equal status, common goals, cooperation and institutional support.
- Forgetting the self-esteem motive
- People favour the in-group to maintain a positive social identity, which is the engine of the theory.
Exam-style questions
Questions in the style of QCAA exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
Practice2 marksIdentify one strength and one limitation of social identity theory.Show worked answer →
Strength (1 mark): social identity theory has strong explanatory and empirical support, for example Tajfel's minimal group studies showed that mere categorisation into groups, with no contact or competition, is enough to produce in-group favouritism, so the theory explains prejudice and discrimination that arise without real conflict.
Limitation (1 mark): the theory can be reductionist and over-emphasises group membership, underplaying individual differences (such as personality) and situational factors, and it does not fully explain why some people show far more in-group bias than others.
Practice3 marksThis question refers to Barlow et al. (2012), who surveyed 441 people from a dominant racial group about positive and negative contact with a minority group and their prejudicial attitudes. Participants with more negative contact reported more prejudicial attitudes and were more likely to avoid culture-based conversation and face-to-face contact. Explain how prejudice can lead to discrimination and provide two examples from the investigation.
Show worked answer →
Explanation (1 mark): prejudice is a negative attitude toward a group, and when this attitude is acted upon it becomes discrimination, the unfair behavioural treatment of people based on group membership (attitude to behaviour, the affective and behavioural link).
Two examples from the investigation (1 mark each):
Participants with more negative contact were more likely to avoid face-to-face contact with the minority group (avoidant discrimination).
They were more likely to avoid culture-based topics of conversation with members of that group.
Practice3 marksThis question refers to the investigation by Barlow et al. (2012) into contact and prejudice between a dominant racial group and a minority racial group. Identify the type of racism experienced in the investigation and describe two ways to reduce this form of prejudice.Show worked answer →
Type of racism (1 mark): interpersonal (or individual) racism, prejudice and discrimination expressed between individuals through everyday contact and attitudes, rather than institutional racism.
Two reduction strategies (1 mark each):
Increase positive intergroup contact under Allport's conditions (equal status, cooperation, common goals and institutional support), which reduces prejudice through familiarity.
Use superordinate goals that require both groups to cooperate, or recategorisation into a shared in-group, reducing the us-and-them division that drives prejudice.