Social Influence: Conformity and Obedience

Understanding why people change their behavior to fit in with a group or follow an authority figure is fundamental to psychology and to navigating social life itself. From fashion trends to harmful acts of compliance, social influence—the process by which an individual’s attitudes, beliefs, or behaviors are modified by the presence or actions of others—shapes human interaction. This article delves into the landmark studies that uncovered the powerful mechanics of conformity and obedience, examining both the forces that drive compliance and the psychological resources that can foster resistance.

Conformity: The Asch Line Experiments

Conformity is defined as a change in a person’s behavior or opinions as a result of real or imagined pressure from a person or group. The most famous investigation into this phenomenon was conducted by Solomon Asch in the 1950s. In his experiment, participants were seated in a group ostensibly taking a simple visual perception test, judging which of three comparison lines matched a standard line in length. Unbeknownst to the one true participant, the rest of the group were confederates instructed to give the same incorrect answer on certain critical trials.

Asch found that approximately 75% of participants conformed to the group’s incorrect judgment at least once, with an average conformity rate of 37% across all critical trials. This occurred despite the unambiguous nature of the task. Post-experiment interviews revealed that most conforming participants experienced compliance: they publicly went along with the group to avoid disapproval or rejection, while privately maintaining their own belief. A smaller number experienced internalisation, where they came to genuinely believe the group’s answer was correct. Others demonstrated identification, conforming to the behavior of a group they value to be part of it, even if not permanently changing their private view.

The study highlighted the immense power of normative social influence—the desire to be liked and accepted—even in the face of clear evidence. Factors increasing conformity in Asch’s paradigm included group size (with conformity peaking with 3-4 confederates), unanimity of the group, and the difficulty of the task.

Obedience to Authority: Milgram’s Shocking Research

If conformity is pressure from equals, obedience involves following the direct orders of a perceived authority figure. Stanley Milgram’s controversial 1960s experiments sought to understand how ordinary people could commit atrocities, such as those in the Holocaust. Participants were told they were in a “learning experiment” where they would act as a “Teacher,” administering electric shocks to a “Learner” (a confederate) for each incorrect answer. The shock generator panel increased in 15-volt increments from 15V (“Slight Shock”) to 450V (“Danger: Severe Shock” and “XXX”).

Despite the Learner’s protests, cries of pain, and eventual silence, 65% of participants continued to administer shocks all the way to the fatal 450V. This profound level of obedience was not due to participants’ sadism but to the powerful situational factors engineered by Milgram. These included the prestigious setting of Yale University, the perceived legitimate authority of the experimenter, the gradual incremental nature of the task (the “foot-in-the-door” technique), and the diffusion of responsibility onto the experimenter.

The ethical implications of the study were immense. Participants experienced extreme psychological stress, believing they had harmed another person. This sparked a major debate leading to stricter ethical guidelines in psychology, emphasizing informed consent, protection from harm, and the right to withdraw. However, Milgram defended the study’s value in revealing a disturbing truth about human nature that could not have been discovered any other way.

Conformity to Social Roles: The Stanford Prison Experiment

Philip Zimbardo’s 1971 Stanford Prison Experiment (SPE) investigated how people conform to social roles. College students, randomly assigned as either “guards” or “prisoners,” were placed in a simulated prison in the basement of Stanford University. The guards were given uniforms, mirrored sunglasses, and broad authority. The prisoners were dehumanized with numbered smocks and chains.

The results were startling and alarming. Within days, the guards became increasingly authoritarian, cruel, and inventive in their humiliation of prisoners. The prisoners became passive, depressed, and submissive. Some even developed psychosomatic illnesses. The simulation became so realistically toxic that Zimbardo terminated the six-day study after only six days. The SPE powerfully demonstrated how situational forces and the internalisation of assigned roles can override individual personality and morality, leading ordinary people to enact extreme behaviors. Like Milgram’s work, the SPE is heavily criticized for its severe ethical breaches but remains a potent illustration of the power of the situation.

Evaluating Explanations and Resistance to Social Influence

The studies of Asch, Milgram, and Zimbardo provide compelling evidence for situational explanations of behavior. They show that social context, group pressure, and authority structures can be more powerful determinants of action than individual disposition. However, these studies also point to factors that can increase resistance.

The presence of social support is a key buffer. In Asch’s variation where one confederate gave the correct answer, conformity in the true participant plummeted to just 5%. This dissenting ally broke the unanimity of the group, providing the participant with an alternative social model and reducing the pressure to conform. Similarly, in Milgram’s variations, when participants saw two other “teachers” (confederates) rebel and refuse to continue, obedience rates dropped dramatically.

An individual’s personality also plays a role, particularly their locus of control. This refers to a person’s perception of personal control over their own behavior and life events. Individuals with an internal locus of control believe they are responsible for their own actions and outcomes. Research suggests these individuals are more likely to resist social pressure and obey their own conscience, as they feel their destiny is self-determined. Conversely, those with an external locus of control believe their lives are controlled by external forces (fate, luck, or powerful others) and are more likely to conform or obey, as this aligns with their worldview.

Common Pitfalls

1. Confusing Conformity and Obedience: A common error is using these terms interchangeably. Remember, conformity is a response to group pressure (peers), while obedience is a response to a direct command from an authority figure. In Asch’s study, participants conformed to peers; in Milgram’s, they obeyed an experimenter.
2. Over-emphasising Dispositional Explanations: When analyzing harmful obedience or conformity, there is a tendency to blame the “character” of the individuals involved (e.g., “they were evil or weak”). The core lesson from these studies is the overwhelming power of the situation. Avoiding this fundamental attribution error is crucial for accurate analysis.
3. Dismissing the Studies as “Unethical and Therefore Invalid”: While the severe ethical issues in Milgram and Zimbardo’s work are undeniable, it is a mistake to let this discredit their findings entirely. The ethical debates they provoked led to better protections for participants, and their revelations about situational power remain robustly supported by subsequent research and real-world events.
4. Misunderstanding Locus of Control as a Fixed Trait: It is easy to view locus of control as a rigid, inborn personality type. In reality, it is a cognitive style that can be influenced by experience and can vary across different life domains. An individual might have an internal locus regarding their career but an external one regarding their health.

Summary

• Conformity (Asch) is driven by normative social influence, with key types being compliance (public-only change), internalisation (private and public change), and identification (change to affiliate with a group).
• Obedience (Milgram) to authority can be alarmingly high in specific situational contexts, such as a legitimate authority figure, a gradual commitment process, and a setting where responsibility is diffused.
• Individuals readily conform to social roles (Zimbardo), with the uniforms, rules, and expectations of a role often overwhelming personal identity and ethics.
• Resistance to social influence is strengthened by the presence of social support (a dissenter) and an internal locus of control, the belief that one governs one’s own actions.
• Collectively, these landmark studies provide a powerful situational explanation for social behavior, demonstrating that context and social systems are frequently more predictive of actions than individual personality traits.