Conformity, Obedience, Groups, and Social Influence

1. Conformity: Normative and Informational Influence

Conformity is changing one's behavior or beliefs to match those of a group, often without a direct request. Solomon Asch (1951, 1956) showed its power: in a line-length task with an obvious correct answer, about 75% of participants conformed to a clearly wrong majority at least once, and conformity occurred on roughly a third of critical trials. Two motives drive it. Normative social influence is conforming to be liked, accepted, or avoid rejection — it produces public compliance but not necessarily private change. Informational social influence is conforming because we believe others have accurate information, especially in ambiguity (as in Sherif's autokinetic-effect studies, where a stationary light seemed to move and groups converged on shared estimates). Informational influence more often produces genuine private acceptance.

2. Obedience and the Milgram Studies

Obedience is changing behavior in response to a direct command from an authority figure. Stanley Milgram (1963, 1974) tested how far people would go when an authority instructed them to deliver escalating electric shocks to a "learner" (a confederate who received no real shocks) for wrong answers. About 65% administered the maximum 450-volt level, illustrating the power of legitimate authority, physical proximity, and gradual escalation. The study raised serious ethics concerns — deception, distress, and pressure against withdrawal — that would not pass modern review, and it relied on a controlled lab. Partial replications (e.g., Burger, 2009, capping shocks at 150 volts) found similar rates, suggesting the phenomenon is robust, though the original's generalizability and interpretation remain debated.

3. Groups: Performance and Decision-Making

Groups change individual behavior in predictable ways. Social facilitation (Zajonc, 1965) is the tendency for others' mere presence to improve performance on simple or well-learned tasks and impair it on complex or novel ones, because arousal strengthens the dominant response. Social loafing is the reverse on additive tasks: individuals exert less effort when their output can't be identified (Ringelmann's rope-pulling studies). Groupthink (Janis, 1972) occurs when a cohesive group prioritizes consensus over realistic appraisal, leading to flawed decisions (e.g., the Bay of Pigs invasion). Group polarization is the tendency for discussion to strengthen members' initial leanings — a risky group becomes riskier, a cautious group more cautious. Deindividuation is the loss of self-awareness and individual accountability in groups (often with anonymity or arousal), which can fuel disinhibited behavior. The Stanford prison study (Zimbardo, 1971) — students randomly assigned as "guards" or "prisoners" in a simulated prison quickly adopted their roles, with guards becoming abusive until the study was stopped after six days — is often cited for the power of roles and situations. However, it has been criticized for demand characteristics, researcher involvement (Zimbardo acted as superintendent), non-random selection, ethical problems, and failed replication (the 2002 BBC Prison Study produced very different results), so its conclusions warrant caution.

How it works

1. A situation creates pressure: peers (conformity) or an authority (obedience).
2. If peers are unanimous and you fear rejection, normative influence drives public compliance.
3. If the situation is ambiguous and others seem informed, informational influence drives private acceptance.
4. Authority, proximity, and gradual escalation increase the likelihood of obedience.
5. Group contexts alter arousal and accountability: arousal aids easy tasks but hurts hard ones; diffused accountability enables loafing and deindividuation.
6. Cohesive, insulated groups can fall into groupthink, and discussion can polarize members toward extremes.
7. The result is behavior that differs from what the same person would do alone.

Common confusions

Memory aids

For the group effects, use "F-L-G-P-D: Five Little Groups Polarize Dangerously" — Facilitation (others help easy tasks), Loafing (hidden effort drops), Groupthink (consensus over correctness), Polarization (views get more extreme), Deindividuation (the self fades in the crowd).

Quick review

Topic Recap

Social influence takes two major forms: conformity, the peer-driven adjustment to group norms (normative = to be liked; informational = to be right), and obedience, the authority-directed compliance dramatized by Milgram's studies. Groups reshape individual behavior through social facilitation, social loafing, groupthink, group polarization, and deindividuation. Classic studies such as Asch's, Milgram's, and Zimbardo's Stanford prison study are historically important but must be read with attention to their methodological limits, ethics concerns, and replication record.

Knowledge Check

1. You go along with your friends' movie choice to avoid an argument. This is ______ social influence.
2. In Milgram's original study, roughly what percentage of participants administered the maximum shock?
3. A skilled pianist plays better before an audience, but a novice plays worse. This illustrates ______.
4. A committee suppresses a member's valid objections because everyone wants to agree. This is ______.
5. True or false: The Stanford prison study is a well-controlled experiment whose findings have been cleanly replicated.

Answers and Rationales

1. Normative. You conformed to be accepted and avoid conflict, not because you believed their choice was objectively better (which would be informational influence).
2. About 65%. This high rate demonstrated authority's power, though the study's ethics and generalizability remain contested.
3. Social facilitation. Audience arousal strengthens the dominant response — the expert's well-learned skill improves; the novice's uncertain performance worsens.
4. Groupthink. The group prioritized consensus and harmony over realistic, critical evaluation.
5. False. The Stanford prison study had serious methodological flaws (demand characteristics, researcher involvement) and failed to replicate cleanly (e.g., the BBC Prison Study).