How Do Prejudice and Discrimination Arise—and Change?
From beliefs and unequal treatment to institutions, contact, and intervention evidence.
- Level
- Introductory
- Reading load
- 10 core readings in 5 units
- Prerequisites
- No methods course is required. The guides introduce indirect measures, experimental comparisons, research synthesis, and conceptual arguments. How Do Other People and Social Situations Shape Us? offers useful preparation. The Groups and Collective Action path adds context about social identity and collective change.
- Last reviewed
- September 2026
Introduction
Goodwill, belief, and conduct do not always travel together. A person may know a stereotype without endorsing it, express goodwill while treating others unequally, or participate in arrangements whose effects exceed their intentions. Understanding prejudice and discrimination requires us to distinguish these possibilities and then examine how they interact within particular social conditions.
Begin with a task that infers an evaluation from responses rather than asking for it directly. What can it reveal, and how does that differ from what a field comparison reveals about the treatment of other people? Then examine accounts of when stereotypes come to mind and what they lead people to expect, and broaden the explanation to cultural settings and people missed by familiar group categories. The final units compare contact and training interventions with the evidence needed to judge their effects.
By the end, you should be able to identify the outcome a claim concerns, compare individual and institutional explanations, recognize limits on generalization, and assess whether a proposed remedy addresses the unequal treatment it promises to change. The research syntheses may take several sittings; their reasoning is accessible without reproducing every statistical calculation.
Unit 1 of 5
What exactly is being measured?
Stereotypes concern beliefs about a group; prejudice concerns evaluation; discrimination concerns unequal treatment. These useful distinctions are not defined identically by every author. Start with how an indirect task is interpreted, then contrast it with matched-applicant evidence about hiring. Neither measure tells the whole story by itself.
Reading
1 of 10What Do Implicit Measures Measure?
Brownstein, M., Madva, A., & Gawronski, B. (2019). What do implicit measures measure? WIREs Cognitive Science, 10(5), Article e1501. https://doi.org/10.1002/wcs.1501
Methodological contribution · Critical reappraisal · Challenging · Full work: 13 pages
Separate task performance from claims about hidden attitudes, stable traits, or future actions.
Why you’re reading it. Establish what measurement can and cannot contribute to an explanation of prejudice.
A question to consider. An organization wants to use one indirect test to identify employees likely to discriminate. What evidence would it need beyond a difference in task scores?
Reading
2 of 10Meta-analysis of Field Experiments Shows No Change in Racial Discrimination in Hiring Over Time
Quillian, L., Pager, D., Hexel, O., & Midtbøen, A. H. (2017). Meta-analysis of field experiments shows no change in racial discrimination in hiring over time. Proceedings of the National Academy of Sciences, 114(41), 10870–10875. https://doi.org/10.1073/pnas.1706255114
Major synthesis · Methodological contribution · Moderate · Full work: 6 pages
Compare observed callback differences with the mental processes discussed in the preceding review.
Why you’re reading it. Introduce unequal treatment as an outcome that can be studied without first diagnosing a decision maker's attitude.
A question to consider. If matched applications receive different callbacks, what has been established, and what remains unknown about the mechanism and later employment outcomes?
Unit 2 of 5
How do stereotypes enter judgment?
One question concerns the processes by which information becomes available; another concerns the content of the resulting judgment. Devine separates knowledge from endorsement and regulated expression. Fiske explains mixed evaluations through perceived warmth and competence. Consider how each account connects with the measures introduced earlier.
Reading
3 of 10Stereotypes and Prejudice: Their Automatic and Controlled Components
Devine, P. G. (1989). Stereotypes and prejudice: Their automatic and controlled components. Journal of Personality and Social Psychology, 56(1), 5–18. https://doi.org/10.1037/0022-3514.56.1.5
Foundational argument · Landmark empirical study · Moderate · Full work: 14 pages
Trace the evidence for knowing, activating, and endorsing a stereotype as different possibilities.
Why you’re reading it. Introduce a process explanation while examining how the priming task supports it.
A question to consider. What would distinguish a recruiter's knowledge of a cultural stereotype from endorsement, and which of those would a hiring audit reveal?
Reading
4 of 10Stereotype Content: Warmth and Competence Endure
Fiske, S. T. (2018). Stereotype content: Warmth and competence endure. Current Directions in Psychological Science, 27(2), 67–73. https://doi.org/10.1177/0963721417738825
Foundational argument · Major synthesis · Moderate · Full work: 7 pages
Follow the proposed links between social position, stereotype content, emotion, and treatment.
Why you’re reading it. Explain why prejudice may involve mixed evaluations rather than simple dislike.
A question to consider. Could describing a group as warm but incapable support exclusion even when the description sounds sympathetic?
Unit 3 of 5
How is inequality sustained—and whose experience is missed?
Move from judgments to the social worlds in which they acquire meaning and consequences. Cultural practices can reproduce inequality while appearing ordinary. Broad group categories can also obscure experiences at their intersections. Both papers require evaluating definitions, mechanisms, illustrative cases, and the limits of a general explanation.
Reading
5 of 10Racism in the Structure of Everyday Worlds
Salter, P. S., Adams, G., & Perez, M. J. (2018). Racism in the structure of everyday worlds: A cultural-psychological perspective. Current Directions in Psychological Science, 27(3), 150–155. https://doi.org/10.1177/0963721417724239
Foundational argument · Critical reappraisal · Moderate · Full work: 6 pages
Identify how historical representations and institutional practices can shape the choices available to individuals.
Why you’re reading it. Add an account of persistence that does not depend entirely on personal animosity.
A question to consider. A workplace removes hostile language but leaves a referral system unchanged. What would you examine before concluding that access has become fairer?
Reading
6 of 10Intersectional Invisibility
Purdie-Vaughns, V., & Eibach, R. P. (2008). Intersectional invisibility: The distinctive advantages and disadvantages of multiple subordinate-group identities. Sex Roles, 59(5–6), 377–391. https://doi.org/10.1007/s11199-008-9424-4
Foundational argument · Critical reappraisal · Moderate · Full work: 15 pages
Ask who is treated as the representative member of each category used in research or policy.
Why you’re reading it. Examine how measures of progress can overlook distinctive exclusions.
A question to consider. How could an improvement reported for women overall conceal a worsening outcome for a subgroup, and how would you redesign the comparison?
Unit 4 of 5
What does contact change?
Contact theories propose conditions and mechanisms for better relations. They also raise questions about selection, power, and transfer. Apply those distinctions to a field experiment that measures several responses after cooperation in mixed soccer teams. Improved relations and changes in unequal opportunity are separate outcomes to investigate.
Reading
7 of 10Recent Advances in Intergroup Contact Theory
Pettigrew, T. F., Tropp, L. R., Wagner, U., & Christ, O. (2011). Recent advances in intergroup contact theory. International Journal of Intercultural Relations, 35(3), 271–280. https://doi.org/10.1016/j.ijintrel.2011.03.001
Major synthesis · Foundational argument · Moderate · Full work: 10 pages
Compare claims about the conditions of contact with evidence about its mechanisms and consequences.
Why you’re reading it. Build a framework for evaluating a concrete contact intervention.
A question to consider. A community proposes joint activities to reduce exclusion. Which features, outcomes, and participant perspectives would you specify before evaluating the program?
Reading
8 of 10Building Social Cohesion Through Soccer in Post-ISIS Iraq
Mousa, S. (2020). Building social cohesion between Christians and Muslims through soccer in post-ISIS Iraq. Science, 369(6505), 866–870. https://doi.org/10.1126/science.abb3153
Landmark empirical study · Methodological contribution · Moderate · Full work: 5 pages
Compare effects toward encountered peers with responses to unfamiliar group members.
Why you’re reading it. Test how far a contact framework travels in a particular field setting.
A question to consider. Which observations would show that a successful mixed-team program also changes opportunities outside the league?
Unit 5 of 5
Which interventions improve treatment?
A persuasive explanation does not ensure that an intervention works. First assess the research base and its gaps; then inspect a training experiment's design and outcomes directly. The review discusses that experiment, making their comparison an opportunity to check what synthesis preserves or simplifies.
Reading
9 of 10Prejudice Reduction: Progress and Challenges
Paluck, E. L., Porat, R., Clark, C. S., & Green, D. P. (2021). Prejudice reduction: Progress and challenges. Annual Review of Psychology, 72(1), 533–560. https://doi.org/10.1146/annurev-psych-071620-030619
Major synthesis · Critical reappraisal · Challenging · Full work: 28 pages
Compare evidence for immediate responses, durable change, and behavior across intervention approaches.
Why you’re reading it. Develop standards for judging a proposed remedy rather than choosing one from a favorable headline.
A question to consider. How would your recommendation change if a large average benefit came mainly from small studies measuring attitudes immediately after an activity?
Reading
10 of 10The Mixed Effects of Online Diversity Training
Chang, E. H., Milkman, K. L., Gromet, D. M., Rebele, R. W., Massey, C., Duckworth, A. L., & Grant, A. M. (2019). The mixed effects of online diversity training. Proceedings of the National Academy of Sciences, 116(16), 7778–7783. https://doi.org/10.1073/pnas.1816076116
Landmark empirical study · Methodological contribution · Moderate · Full work: 6 pages
Use the original design to evaluate the review's account and the difference between attitude and behavior outcomes.
Why you’re reading it. Apply the syllabus's measurement, selection, and institutional distinctions to a practical intervention.
A question to consider. Would you recommend this training as a remedy for unequal promotion? State what it tested and what additional evidence would be necessary.
Scope and omissions
This path connects stereotype processes and content, racial discrimination, cultural and institutional settings, intersectional invisibility, contact, and intervention evaluation. It gives both conceptual papers and field evidence substantive roles. It is not a catalogue of biases or a training manual.
US racial categories and settings receive considerable attention; the Iraqi contact study and multinational workplace sample broaden the settings without establishing universal effects. Gender and sexuality enter several arguments, but ageism, disability, class, religion, and national histories each warrant more extensive treatment. The path does not comprehensively cover the experience and health consequences of being targeted, developmental origins, social-dominance and system-justification theories, or legal and economic approaches to inequality. Its institutional discussion is an introduction, not an evaluation of every structural remedy.
Synthesis
Prejudice and discrimination concern connected outcomes that require different evidence. A task score, a stated evaluation, and unequal treatment reveal different things. Explanations may turn on accessible associations, perceived status and intentions, institutional practices, or whose experience is recognized. Their value depends on showing how the proposed process bears on the particular outcome and setting under examination.
Contact and training can alter some responses while leaving others unchanged. Evaluating them requires specifying who participates, which comparison supports a causal claim, how effects differ across people, and whether they extend beyond the immediate setting. A more favorable attitude is not sufficient evidence of fairer access; behavioral improvement does not require assuming every underlying belief has changed.
Consider a workplace that finds unequal access to mentoring and promotion. Propose two explanations at different levels, identify whose experience an overall average might conceal, and design a comparison for each. Then evaluate a training or contact program alongside a change to the decision process. Specify meaningful outcomes, follow-up timing, possible unintended effects, and what result would make you revise your recommendation.
Continue with Why Do People Help and Cooperate? to distinguish helpful actions from their motives and examine how trust, shared rules, and sanctions affect collective outcomes.
For how people organize to change shared conditions, continue with How Do Groups Shape Identity and Collective Action?. Return to How Do Other People and Social Situations Shape Us? to connect these questions with the wider area.
Further reading
Optional. Not part of the core sequence.
- Lepore, L., & Brown, R. (1997). Category and stereotype activation: Is prejudice inevitable? Journal of Personality and Social Psychology, 72(2), 275–287. Paper. Examine why activating a category and priming stereotype content can support different inferences about automaticity.
- Fiske, S. T., Cuddy, A. J. C., Glick, P., & Xu, J. (2002). A model of (often mixed) stereotype content: Competence and warmth respectively follow from perceived status and competition. Journal of Personality and Social Psychology, 82(6), 878–902. Paper. Study the original empirical development of the warmth–competence framework introduced by the shorter review. Consult its correction, which restores omitted negative signs in reported competition–warmth correlations.
- Pettigrew, T. F., & Tropp, L. R. (2006). A meta-analytic test of intergroup contact theory. Journal of Personality and Social Psychology, 90(5), 751–783. Paper. Inspect the larger quantitative synthesis behind many of the contact review's claims.
- Paluck, E. L., Green, S. A., & Green, D. P. (2019). The contact hypothesis re-evaluated. Behavioural Public Policy, 3(2), 129–158. Paper. Compare the broader contact literature with a narrower assessment requiring random assignment and delayed outcomes. Its gaps describe the literature assembled for that review.
- Forscher, P. S., Lai, C. K., Axt, J. R., Ebersole, C. R., Herman, M., Devine, P. G., & Nosek, B. A. (2019). A meta-analysis of procedures to change implicit measures. Journal of Personality and Social Psychology, 117(3), 522–559. Paper. Examine whether changes in indirect measures coincide with changes in explicit responses or behavior.
- Kalev, A., Dobbin, F., & Kelly, E. (2006). Best practices or best guesses? Assessing the efficacy of corporate affirmative action and diversity policies. American Sociological Review, 71(4), 589–617. Paper. Extend the workplace question to organizational policies and managerial representation. Evaluate the opportunities and confounding risks of longitudinal observational comparisons.