Unit 4.3: Psychology of Social Situations
AP Psychology | Unit 4: Social Psychology and Personality
π― Exam Focus
This unit examines how social situations powerfully influence behavior. Master conformity (Asch line study, normative vs. informational social influence), obedience (Milgram shock experiment, factors affecting obedience), group behavior (social facilitation, social loafing, deindividuation, groupthink, group polarization), bystander effect (Darley & LatanΓ©, diffusion of responsibility, pluralistic ignorance), altruism, and aggression. Know classic studies: Asch (75% conformed at least once), Milgram (65% went to 450 volts), Stanford Prison Experiment (Zimbardo - role conformity). Understand how situations overwhelm personality. This major topic appears frequently on both multiple-choice and FRQ sections. Be able to apply concepts to novel scenarios and explain classic experiments.
π The Power of Social Situations
One of social psychology's most important discoveries: situations often have more influence on behavior than personality traits. We like to think we'd act heroically, resist bad orders, or help those in need β but research shows that ordinary people often behave in surprising ways when placed in powerful social situations.
This unit explores how social contexts shape behavior through conformity, obedience, group dynamics, and helping/aggression. Classic experiments reveal the disturbing extent to which situations can override individual judgment and morality.
Understanding these phenomena helps explain historical atrocities, everyday behaviors, and how to resist negative social pressures. The research is both fascinating and cautionary.
π₯ Conformity
What is Conformity?
Conformity is adjusting one's behavior or thinking to match those of other people or a group standard. We go along with the group even when it conflicts with our own judgment.
Key Features:
- Changing behavior to fit in with the group
- Can be explicit (direct pressure) or implicit (unspoken norms)
- Not necessarily bad β helps societies function smoothly
- But can lead to harmful outcomes when group norms are destructive
Asch Line Study (1951)
Solomon Asch's classic experiment demonstrated the power of group pressure on conformity.
The Experiment:
- Participants shown lines and asked which comparison line matched the standard line
- Answer was obvious (correct answer clear to everyone)
- Real participant seated with 6-8 confederates (actors posing as participants)
- Confederates deliberately gave wrong answer on 12 of 18 trials
- Researchers measured whether real participant conformed to incorrect majority
Results:
- 75% of participants conformed at least once (gave wrong answer to match group)
- 37% average conformity rate across all critical trials
- When alone, participants made errors less than 1% of the time
- Participants knew the correct answer but went along with the group
Factors Affecting Conformity:
- Group size: Conformity increases up to 3-4 people, then levels off
- Unanimity: One dissenter dramatically reduces conformity (breaks unanimity)
- Status: Higher status group members elicit more conformity
- Public response: More conformity when answering publicly vs. privately
- Culture: Collectivist cultures show higher conformity than individualist
Two Types of Social Influence
Normative Social Influence
Conforming to be liked and accepted
- Want to fit in
- Avoid rejection
- Gain approval
- Publicly comply (may not privately agree)
Example: Laughing at a joke you don't find funny because everyone else is laughing
Informational Social Influence
Conforming to be correct and accurate
- Assume others know better
- Uncertain about correct answer
- Look to group for information
- Privately accept (internalize the belief)
Example: Following the crowd during an emergency because you assume they know where to go
β‘ Obedience to Authority
Milgram's Shock Experiment (1963)
Stanley Milgram's shocking experiment demonstrated that ordinary people will obey authority figures even when ordered to harm others.
The Setup:
- Participants told they were in a study on learning and punishment
- Assigned role of "teacher" (real participant) and "learner" (confederate)
- Teacher instructed to deliver electric shocks for wrong answers
- Shock levels increased from 15 volts to 450 volts (labeled "XXX - Danger")
- Learner (actor) screamed, complained about heart condition, then went silent
- Experimenter (authority) insisted: "Please continue" or "The experiment requires that you continue"
- No actual shocks delivered β learner was acting
Results:
- 65% of participants went to the maximum 450 volts
- 100% went to at least 300 volts (labeled "Intense Shock")
- Participants showed extreme stress (sweating, trembling, nervous laughter)
- Yet most continued when authority insisted
- Predicted only 1-3% would go to maximum β actual result shocked researchers
Factors That Increase Obedience:
- Proximity of authority: Authority figure present in room (obedience higher)
- Legitimacy of authority: Prestigious institution (Yale University)
- Institutional support: Authority backed by respected organization
- Distance from victim: Can't see/hear victim β higher obedience
- Gradual escalation: Small shocks first, then increase incrementally
Factors That Decrease Obedience:
- Proximity to victim: Touching victim β obedience dropped to 30%
- Distance from authority: Authority gives orders by phone β 21% obedience
- Presence of dissenter: Another "teacher" refuses β dramatically reduces obedience
- Lower authority legitimacy: Conducted in rundown office building β 48% obedience
β οΈ Ethical Concerns
Milgram's study raised serious ethical issues: deception (told false purpose), psychological harm (extreme stress), lack of informed consent, and difficulty withdrawing. Participants believed they were hurting someone. Modern ethical standards would not allow this study. However, Milgram defended it, noting participants were debriefed and 84% said they were glad to have participated.
πͺ Group Behavior
Social Facilitation
Social facilitation is the tendency for people to perform better on simple/well-learned tasks and worse on complex/new tasks when others are watching.
The Pattern:
- Easy/mastered tasks: Presence of others enhances performance
- Difficult/new tasks: Presence of others impairs performance
- Arousal strengthens dominant (most likely) response
- For easy tasks, dominant response is correct β better performance
- For hard tasks, dominant response is incorrect β worse performance
Examples:
- Expert athlete performs better in front of crowd
- Beginner athlete chokes under pressure of audience
- Skilled pianist plays better in recital; novice plays worse
Social Loafing
Social loafing is the tendency for individuals to exert less effort when working in a group than when working alone. We "slack off" when our individual contribution is not identifiable.
Why It Happens:
- Diffusion of responsibility β "others will pick up the slack"
- Individual effort not identifiable/evaluated
- Feeling dispensable to group outcome
- Free-rider problem β benefit without contributing fully
Examples:
Group project where some members contribute less because they know others will do the work. Tug-of-war where individuals pull less hard in a team than they would alone. Classic study: people clapping/shouting louder when alone than in groups.
Deindividuation
Deindividuation is the loss of self-awareness and individual accountability in group situations, often leading to impulsive, deviant, or aggressive behavior.
Conditions That Promote It:
- Anonymity (masks, uniforms, crowds)
- Large group size
- Arousal and sensory overload
- Diminished personal responsibility
- Alcohol or drugs
Examples:
- Mob violence and rioting
- Online trolling and cyberbullying (anonymity of internet)
- Vandalism by groups in masks
- Halloween mischief when costumed
Groupthink
Groupthink (Irving Janis) is the mode of thinking that occurs when the desire for harmony in a decision-making group overrides realistic appraisal of alternatives. Groups prioritize consensus over critical thinking.
Symptoms of Groupthink:
- Illusion of invulnerability: Overconfidence, excessive optimism
- Self-censorship: Members withhold dissenting views
- Pressure on dissenters: Members who question are pressured to conform
- Illusion of unanimity: Silence viewed as agreement
- Mindguards: Some members protect group from contradictory information
Consequences:
- Poor decision-making
- Failure to consider alternatives
- Ignoring expert warnings
- Catastrophic outcomes
Examples: Bay of Pigs invasion, Challenger disaster, corporate scandals where boards ignored warning signs
Group Polarization
Group polarization is the tendency for group discussion to strengthen members' initial inclinations and produce more extreme positions. Groups become more extreme in the direction they were already leaning.
How It Works:
- Group starts with slight tendency in one direction
- Discussion exposes members to persuasive arguments supporting that direction
- Members compare themselves and shift toward more extreme position to stand out
- Result: Group ends up more extreme than average of individual starting positions
Examples:
- Jury slightly leaning guilty becomes more certain of guilt after deliberation
- Online echo chambers radicalize political views
- Business team cautious about risk becomes even more risk-averse after discussion
π¨ Bystander Effect
What is the Bystander Effect?
The bystander effect is the phenomenon where individuals are less likely to help a victim when other people are present. The more bystanders, the less likely any one person will help.
Kitty Genovese Case (1964):
Widely publicized murder in New York where woman was attacked for over 30 minutes. Initial reports (later disputed) claimed 38 witnesses heard/saw attack but didn't intervene or call police. Sparked research into why people don't help.
Darley & LatanΓ© Research:
- Staged emergencies with varying numbers of bystanders
- Found inverse relationship: more bystanders = less likely to help
- When alone, 70% helped. With 4 others present, only 31% helped
- Delay in helping also increased with more bystanders
Two Main Explanations:
1. Diffusion of Responsibility
When many people are present, responsibility is spread among all bystanders. Each person feels less personal obligation to act because "someone else will help." Individual accountability decreases as group size increases.
2. Pluralistic Ignorance
People look to others to interpret ambiguous situations. If everyone appears calm (because they're also looking around uncertainly), each person concludes it's not an emergency. Collective uncertainty creates false perception that no help is needed.
Altruism and Helping Behavior
Altruism is unselfish concern for the welfare of others β helping without expectation of reward.
When Are People More Likely to Help?
- When alone or with few others (no diffusion of responsibility)
- When they've witnessed others helping (modeling prosocial behavior)
- When in a good mood
- When they feel empathy for the victim
- When victim is similar to them
- When not in a hurry (Good Samaritan study β seminarians rushing didn't help)
- When situation is clearly an emergency
π’ Stanford Prison Experiment (Zimbardo)
The Study (1971)
Philip Zimbardo's experiment demonstrated the powerful influence of social roles on behavior.
The Setup:
- College students randomly assigned to be "guards" or "prisoners"
- Mock prison created in Stanford psychology building basement
- Planned for 2 weeks
- Prisoners arrested at home by real police, stripped, deloused, given numbers
- Guards given uniforms, mirrored sunglasses, and authority
What Happened:
- Guards quickly became abusive and sadistic
- Prisoners became passive, depressed, and accepting of abuse
- Both groups internalized their roles
- One prisoner had to be released after 36 hours (breakdown)
- Study stopped after only 6 days due to guards' cruelty
Significance & Criticisms:
Showed how powerfully situations and roles shape behavior. However, criticized for lack of scientific rigor, researcher interference (Zimbardo acted as superintendent, encouraging harsh treatment), selection bias, and ethical violations. Replication attempts have failed or been problematic.
π AP Exam Strategy
Multiple Choice Tips
- Know classic studies: Asch (75% conformed), Milgram (65% to 450 volts), Zimbardo (roles shape behavior)
- Distinguish social influence: Normative (want to be liked) vs. informational (want to be correct)
- Master group phenomena: Facilitation (better at easy tasks), loafing (less effort in groups), deindividuation (loss of self in crowd)
- Understand groupthink: Harmony over critical thinking, illusion of unanimity, pressure on dissenters
- Know bystander effect: More bystanders = less help; diffusion of responsibility + pluralistic ignorance
- Identify factors: What increases/decreases obedience, conformity, helping
Free Response Question (FRQ) Tips
- Explain classic studies completely: Describe procedure, results, and significance for Asch/Milgram
- Apply concepts to scenarios: Given situation, identify conformity, obedience, or bystander effect and explain
- Distinguish phenomena: Clearly differentiate social facilitation from social loafing
- Show mechanisms: Explain WHY bystander effect occurs (diffusion + pluralistic ignorance)
- Cite specific results: "65% in Milgram" not "most people obeyed"
- Connect situation to behavior: Emphasize how situations overwhelm personality
- Use proper terminology: "Normative social influence" not "wanting friends to like you"
β¨ Quick Review Summary
π The Big Picture
Social situations powerfully influence behavior. Conformity (Asch) β 75% conformed at least once to obviously wrong answer; normative influence (want acceptance) vs. informational influence (want to be correct). Obedience (Milgram) β 65% delivered maximum 450-volt shock when authority ordered; proximity, legitimacy, gradual escalation increase obedience. Group behavior: social facilitation (better at easy tasks, worse at hard when watched), social loafing (less effort in groups when individual contribution not identifiable), deindividuation (loss of self-awareness in groups leads to impulsive behavior), groupthink (harmony over critical thinking, pressure to conform), group polarization (groups become more extreme in initial direction). Bystander effect (Darley & LatanΓ©) β less likely to help when more bystanders present; explained by diffusion of responsibility and pluralistic ignorance. Stanford Prison Experiment (Zimbardo) β roles powerfully shape behavior; guards became abusive, prisoners passive (criticized for ethics and methodology).
π‘ Essential Concepts
- Conformity
- Solomon Asch
- Normative social influence
- Informational social influence
- Obedience
- Stanley Milgram
- Social facilitation
- Social loafing
- Deindividuation
- Groupthink
- Group polarization
- Bystander effect
- Kitty Genovese
- Darley & LatanΓ©
- Diffusion of responsibility
- Pluralistic ignorance
- Altruism
- Philip Zimbardo
- Stanford Prison Experiment
π AP Psychology Unit 4.3 Study Notes | Psychology of Social Situations
Master conformity, obedience, and group behavior for exam success!