Core Theories of Social Influence and Conformity
Social influence operates through three primary mechanisms: conformity, compliance, and obedience.
Understanding Conformity
Conformity involves changing your beliefs or behaviors to match group norms without direct pressure. Solomon Asch's classic line-judgment experiments showed that participants conformed to obviously incorrect group answers up to 35% of the time. This demonstrates how powerful group norms can be, even when clearly wrong.
Normative social influence explains conformity through the desire for social approval and fear of rejection. Informational social influence suggests people conform because they believe the group has accurate information.
Compliance and Obedience
Compliance means changing behavior in response to a direct request. Muzafer Sherif's autokinetic effect studies showed that groups could influence individual responses, and these effects persisted even after the group left.
Obedience involves following direct orders from authority figures. Stanley Milgram's controversial experiments demonstrated that ordinary people would administer electric shocks when instructed by someone in a lab coat. This reveals how authority status shapes behavior.
Minority Influence and Group Dynamics
Moscovici's research revealed that consistent, committed minorities could shift majority opinions through minority influence. This shows that small groups with conviction can change larger group perspectives over time.
MCAT questions often require you to identify which influence type applies in a scenario. Practice distinguishing between absent group pressure (conformity), direct requests (compliance), and authority commands (obedience).
Attitude Formation, Change, and Cognitive Dissonance
Attitudes are evaluative judgments about people, objects, or issues. They contain three components: cognitive (beliefs), affective (emotions), and behavioral (actions).
Two Routes to Attitude Change
The elaboration likelihood model (ELM) describes how people process persuasive messages. The central route uses careful thinking and strong arguments, producing lasting attitude changes. This route works when people are motivated and able to think critically.
The peripheral route relies on superficial cues like speaker attractiveness or expertise instead of message quality. People use this route when they lack motivation, ability, or both. Peripheral route changes are weaker and less resistant to counterarguments.
Cognitive Dissonance Theory
Cognitive dissonance occurs when attitudes and behaviors conflict, creating psychological discomfort. Leon Festinger's theory predicts that people reduce this discomfort by changing either their attitudes or behaviors.
His famous $1 versus $20 study showed the power of insufficient justification. Participants paid only $1 to lie about a boring task reported enjoying it more than those paid $20. The lower payment created greater dissonance, motivating larger attitude changes.
Other Attitude Theories
Balance theory and congruity theory explain how people manage conflicting attitudes and beliefs. The sleeper effect describes how people initially dismiss messages from non-credible sources but later accept them after forgetting the source.
For MCAT success, distinguish conditions favoring attitude change and predict how people resolve cognitive dissonance in real-world scenarios.
Group Behavior, Social Facilitation, and Deindividuation
Groups change how we perform and behave. Understanding these effects is crucial for MCAT scenarios involving teams and crowds.
Social Facilitation and Inhibition
Social facilitation describes how the presence of others affects performance. Zajonc's drive theory explains this clearly: the presence of others increases arousal, enhancing performance on simple, well-learned tasks but impairing performance on complex or novel tasks.
Athletes perform better on familiar plays in front of crowds but struggle when learning new techniques. This arousal mechanism explains both improved and worsened performance.
Social inhibition occurs when audience presence hurts performance, particularly with unfamiliar or complex tasks.
Group Decision-Making Problems
Group polarization (or risky shift) occurs when group discussion strengthens initial member inclinations, often leading to more extreme decisions than individuals would make alone.
Groupthink, identified by Irving Janis, is the desire for harmony and conformity that overrides realistic evaluation. The Bay of Pigs invasion and Space Shuttle Challenger disaster exemplify groupthink consequences.
Deindividuation and Effort Loss
Deindividuation is the loss of self-awareness in group situations, where anonymity reduces personal accountability and increases antisocial behavior. The Stanford prison experiment illustrated deindividuation through role effects.
Social loafing describes the tendency to exert less effort in groups than alone. Social compensation shows that people sometimes work harder in groups to compensate for others' expected laziness.
Practice applying these phenomena to team performance, collective behavior, and crowd situations.
Prosocial Behavior, Helping, and Aggression
Prosocial behavior encompasses actions intended to benefit others: helping, sharing, and cooperating.
The Bystander Effect
Latané and Darley identified the bystander effect: people are less likely to help when others are present. A person having a seizure received help 85% of the time when alone but only 31% of the time with bystanders present.
Diffusion of responsibility and pluralistic ignorance both contribute to this effect. In ambiguous situations, people look to others for cues and assume someone else will help.
Factors Influencing Helping
The norm of reciprocity states that people return favors and treat others as they've been treated. Social exchange theory suggests people help when perceived benefits outweigh costs.
The empathy-altruism hypothesis proposes that genuine concern for others' welfare motivates purely altruistic helping, not just self-interested exchanges.
Understanding Aggression
Aggression is behavior intended to harm another person. Instrumental aggression is goal-directed harm, while hostile aggression is anger-driven harm.
Albert Bandura's social learning theory emphasizes that aggression is learned through observation and imitation. His Bobo doll experiments showed children imitating aggressive models.
The frustration-aggression hypothesis suggests that frustration increases aggressive responses. Individual differences, personality traits, evolutionary factors, and situational variables like temperature and noise all influence aggression levels.
For MCAT questions, identify factors increasing or decreasing helping behavior and understand mechanisms underlying both prosocial and aggressive responses.
Prejudice, Stereotyping, and Intergroup Conflict
Prejudice is a negative attitude toward a group based on minimal or no evidence. Stereotyping involves generalizations about group characteristics that may or may not be accurate. Discrimination is the behavioral manifestation of prejudice.
Social Identity and In-Group Bias
Social identity theory, developed by Tajfel and Turner, explains that people derive identity from group memberships and favor in-groups while derogating out-groups. Even arbitrary group assignments create in-group bias.
The minimal group paradigm demonstrated that people show favoritism based solely on trivial group distinctions. This reveals how easily we form group loyalties.
Origins of Prejudice and Conflict
Realistic conflict theory proposes that prejudice emerges when groups compete for scarce resources. Sherif's Robbers Cave experiment showed hostility developed between competing groups but decreased through cooperative activities with mutual goals.
The jigsaw classroom technique reduces prejudice by combining cooperative learning with interdependence, increasing positive intergroup contact.
Modern Concepts in Prejudice
Implicit bias refers to unconscious negative attitudes toward groups, measured through implicit association tests. Stereotype threat describes how awareness of negative stereotypes impairs performance in stereotype-relevant domains, affecting women in mathematics and African Americans academically.
The contact hypothesis suggests prejudice decreases through intergroup contact when status is equal, cooperation targets common goals, and institutions support contact.
These concepts explain group conflict, social inequality, and evidence-based approaches to reducing prejudice on a societal level.