MCAT content library / Psychology & sociology / Discrimination: individual actions and institutional rules
Find the decision or eligibility rule that creates unequal access, then test the explanation against a changed case.
About 17 minutes, including the worked examples and checks.
Useful foundations
On this page
- Trace the decision that changes access
- Individual decisions and institutional procedures
- Worked application: a gate before the final decision
- Design a comparison for the mechanism you mean
- Resources, prestige, and power can enter at different steps
- Keep the conclusion tied to the comparison
- Check your reasoning
- Continue learning
- Sources
Trace the decision that changes access
An unequal outcome raises a question about how it was produced. An evaluator may treat otherwise comparable applicants differently, or a standing rule may exclude some applicants before an evaluator sees them. The AAMC distinguishes individual and institutional discrimination and connects both to power, prestige, and class. The task is to identify a mechanism in the supplied evidence, rather than infer private attitudes from an outcome alone.1
Prejudice concerns an attitude toward a group; discrimination concerns unequal treatment or exclusion through action and practice. The two can be related without being identical. Someone can report an accepting attitude while administering a rule that restricts access. Someone can also hold a negative attitude without acting on it in a particular decision. Evidence about one level should not be treated as a complete measurement of the other.2
Individual decisions and institutional procedures
An individual-discrimination hypothesis might propose that a decision-maker responds differently to a group-identifying cue despite otherwise comparable qualifications. An institutional explanation instead examines recurring procedures, eligibility standards, and how opportunities are organized. The same institution can involve both mechanisms. They are levels of explanation, not mutually exclusive descriptions of every real event.3
A rule can be applied consistently and still transmit an existing disadvantage into a new outcome. Consistency answers whether the same rule was followed. It does not establish whether the rule’s requirement measures the relevant qualification, whether access to satisfying it is unequal, or which groups the rule repeatedly excludes. A sociological analysis examines those links; it does not require guessing what each administrator privately feels.2
Worked application: a gate before the final decision
The program and values below are original teaching material. A technical fellowship receives 200 applications. One hundred applicants come from households with greater financial resources and 100 from households with fewer resources. All pass the same practical qualification test, and all task-relevant qualifications are matched between the groups in this model. The categories describe resources, not ability or personal worth.
The fellowship additionally requires a paid association membership card. The card supplies no training or task-relevant information. The scenario stipulates that its fee produces the difference in card access shown below. Every applicant with a card is admitted; every applicant without one is excluded. Staff follow the rule exactly, have no discretion, and have no capacity limit or competing admissions criterion.
| Applicant group | Applicants meeting practical qualification | Applicants with card | Admitted |
|---|---|---|---|
| Greater household resources | 100 | 90 | 90 |
| Fewer household resources | 100 | 30 | 30 |
Among all practically qualified applicants, the admission proportions are 90/100 = 90% and 30/100 = 30%. The difference is 60 percentage points. Across both groups, 120 of 200 applicants are admitted, or 60%. Those calculations use the applicant pool that satisfies the fellowship’s supplied practical qualification.
Among cardholders, the admission proportions are instead 90/90 = 100% and 30/30 = 100%. That conditional equality is correct. It describes decisions after the resource-linked gate. It cannot show that access to the fellowship is equal across the full practically qualified applicant pool. Replacing the denominator changes the question, not the underlying admissions history.
The mechanism is explicit: unequal ability to obtain an irrelevant paid credential becomes unequal access through an institutional requirement. No additional difference in measured skill or discretionary treatment is needed to generate this result. The example illustrates an institutional process even if each staff member reports favorable attitudes toward both groups. It does not establish their private motives or make a claim about a real population.
Change the implicated rule
Now remove only the membership-card requirement and apply the remaining practical qualification to the same 200 applicants. Because every applicant meets it and there is no capacity limit, each group now has 100 admissions. The greater-resource group gains ten places; the fewer-resource group gains 70. Total admissions rise by 80, from 120 to 200. The specific access gap generated by this gate disappears in the model.
The prediction would change if another rule, a fixed number of places, unequal application rates, or a new fee were added. Do not silently introduce those conditions into this case, and do not assume that removing one barrier would remove every source of inequality in a different institution. A counterfactual is useful because it states exactly which part of the process changes.
Design a comparison for the mechanism you mean
To test discretionary treatment, researchers can compare matched applications that differ only in an experimentally assigned cue, such as a fictional group label. Random assignment and matched records help separate the cue’s effect from differences in qualifications. Such a comparison evaluates responses to the cue in that task; it does not identify every psychological motive behind the response or establish the same effect in all institutions.3
To test a rule-based barrier, retain information about applicants before and after each eligibility step. If only admitted people are surveyed, excluded applicants are absent from the data. A report that all admitted applicants were treated alike cannot reveal how the excluded group was screened out. Record relevant qualifications, the requirement, access to meeting it, and the resulting decision.
A raw difference in an observational dataset does not uniquely identify the mechanism. Application histories, different opportunities, measurement choices, and unmeasured conditions may matter. Conversely, controlling statistically for a variable that is itself produced by an exclusionary process can remove part of the pathway being studied. Decide whether the question concerns treatment at the final step or access across the whole sequence before choosing the comparison.3
Resources, prestige, and power can enter at different steps
Class-related resources can affect the ability to pay a fee or spend time meeting a requirement. Prestige concerns socially recognized standing: a recommendation from a highly regarded person may receive more attention. Power concerns the capacity to shape decisions and enforce the rules governing opportunities. These dimensions can reinforce one another, but they need not be identical. A respected volunteer may have little money, while an administrator may control eligibility without personally possessing great wealth.4
In the fellowship model, household resources affect card access, and the institution’s rule turns that access into admission. Prestige is not a supplied cause, so adding a story about respected families would exceed the evidence. An explanation is stronger when each concept has a stated role in the process rather than appearing as a general synonym for advantage.
Keep the conclusion tied to the comparison
Locate the gate, identify the relevant population, and compare what changes when the decision or rule changes. An attitude report, a final approval percentage, and a complete access pathway answer different questions. Use the one that matches the claim, while keeping ability, group membership, and institutional treatment analytically separate.
ACTIVE PRACTICE · EVIDENCE AND TRANSFER
Follow the Institutional Gate Before Comparing Admission Decisions
Original fellowship: two groups of 100 practically qualified applicants each. Greater-resource group: 90 can obtain a paid membership card; fewer-resource group: 30 can. All cardholders are admitted and no noncardholders are admitted; staff have no discretion and no capacity limit.
Examine the evidence boundary
These original teaching examples distinguish observations from explanations and do not establish unmeasured individual motives.
Check your reasoning
Choose an answer before opening its feedback. Each option explains the reasoning behind that choice.
Check 1
A fellowship has 50 practically qualified applicants from each of two resource groups. A paid credential unrelated to performance is held by 40 applicants in group H and 20 in group L because the groups differ in access to its fee. The rule admits every credential holder and excludes everyone else. Which comparison describes access among all practically qualified applicants?
A. H: 40/40; L: 20/20; therefore access is equal across the qualified applicant pool.
Review this choice. Those denominators describe approval conditional on already holding the credential. They omit qualified applicants excluded by the gate.
B. H: 40/50; L: 20/50; the admission difference is 40 percentage points.
Correct. The relevant population includes all 50 qualified applicants in each group. Admission is 80% versus 40%, a 40-percentage-point difference.
C. H: 40/100; L: 20/100; the admission difference is 20 percentage points within groups.
Review this choice. Dividing by 100 uses the combined applicant pool. It gives each group’s contribution to total admissions, not its within-group chance of admission.
D. H: 50/40; L: 50/20; the lower-resource group has greater access.
Review this choice. These ratios invert admitted and eligible counts and can exceed one. They are not admission proportions.
The principle to carry forward
Use the denominator for the population named in the question; conditional equality after a gate can coexist with unequal access before it.
Check 2
Administrators report equal regard for applicants from two fictional groups. A standardized application exercise randomly varies only the group label on otherwise identical records. Labeled group M receives fewer offers than labeled group N. Which conclusion best respects both observations?
A. The reported attitudes make unequal treatment impossible, so the offers must be identical.
Review this choice. Reported attitude and the observed decision are different measures. One does not erase the other.
B. The offer difference proves the administrators consciously dislike group M.
Review this choice. The randomized label contrast supports an effect on decisions, but it does not uniquely identify conscious hostility as the mechanism.
C. The application exercise measures a difference in treatment that the attitude report does not exclude.
Correct. The matched randomized cue comparison concerns decisions. Equal reported regard does not rule out unequal responses in that task.
D. The applicants in group M must have lower task ability despite their matched records.
Review this choice. Only the label changes, and the records are otherwise identical. The result is not evidence of a qualification difference.
The principle to carry forward
Treat private-attitude measures and decision measures as separate evidence; identify the demonstrated action without inventing its motive.
Check 3
A program has 80 applicants in group P and 120 in group Q; all meet the same practical qualification. An irrelevant membership-card rule admits the 60 cardholders in P and the 30 cardholders in Q. Every cardholder is admitted, and there is no capacity limit. If only this rule is removed and the same applicants are evaluated, which result follows?
A. P gains 20 admissions and Q gains 90; both groups reach 100% admission.
Correct. P goes from 60 to 80 and Q from 30 to 120. All 200 applicants meet the remaining requirement, so each group’s admission proportion becomes one.
B. P gains 20 admissions and Q gains 90; Q retains a lower admission proportion because it is larger.
Review this choice. The increases are correct, but group size does not lower a proportion when every member is admitted:120/120 equals 80/80.
C. P gains 60 admissions and Q gains 30; gains equal the number of former cardholders.
Review this choice. Former cardholders were already admitted. The new admissions are the previously excluded applicants: 20 and 90.
D. Total admissions remain 90 because removing a rule cannot change program capacity.
Review this choice. The stem expressly supplies no capacity limit. Ninety was the old number passing the card gate, not a fixed number of available places.
The principle to carry forward
Predict the effect of a rule change using the fixed applicant pool and all stated constraints; do not turn the old outcome into an unstated quota.
Continue learning
Related lessons
- Stereotypes, prejudice, stigma, and cultural interpretation
- Class, status, and capital: trace resources into opportunity
- Health disparities: distinguish need, access, and use
- Spatial inequality: read routes, exposures, and populations
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Sources
1. AAMC: P/S Content Category 8C
2. OpenStax Introduction to Sociology 3e: Prejudice, Discrimination, and Racism
3. Pager and Shepherd (2008): The Sociology of Discrimination
4. OpenStax Introduction to Sociology 3e: What Is Social Stratification?