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Psychology of
Social Situations

Explore how groups, authority, and social pressure shape human behavior: from conformity and obedience to bystander intervention and attribution.

AP Psychology

What Is Social Psychology?

Social psychology is the scientific study of how individuals think about, influence, and relate to one another. It examines how the actual, imagined, or implied presence of others affects our thoughts, feelings, and behaviors.

Social Thinking
How we perceive ourselves and others: attributions, attitudes, and beliefs
Social Influence
How others shape our behavior: conformity, obedience, and group dynamics
Social Relations
How we interact: prejudice, aggression, attraction, and altruism

The Power of the Situation

One of social psychology's central insights is that situations are far more powerful than most people realize. We consistently underestimate how much context shapes behavior and overestimate the role of personality.

P Person (Dispositions) S Situation (Context) Behavior Weaker than expected Stronger than expected

Attribution Theory

Attribution is how we explain others' behavior. Fritz Heider proposed two types of attributions: dispositional (internal traits) and situational (external circumstances).

Dispositional
"She failed because she's lazy." Attributing behavior to internal character traits.
Situational
"She failed because the test was unfair." Attributing behavior to external circumstances.

Conformity: Asch's Line Study

Solomon Asch (1951) showed that people will conform to a group's obviously wrong answer about one-third of the time. Participants judged which comparison line matched a standard line.

Standard Comparison Lines A B ✓ C ~75% conformed at least once ~33% conformed on average per trial

Obedience: Milgram's Study

Stanley Milgram (1963) demonstrated that ordinary people would administer what they believed were dangerous electric shocks to a stranger, simply because an authority figure instructed them to do so.

15V 225V 450V XXX 65% obeyed to the maximum E Experimenter (Authority) T Teacher (Participant) L Learner (Confederate) "Continue" "Shock" No actual shocks were administered: the learner was an actor

Conformity vs Obedience

Conformity Obedience
Source of pressure Peers (equal status) Authority figure
Type of influence Implicit (unspoken norms) Explicit (direct orders)
Classic study Asch (line study) Milgram (shock study)
Motivation Desire to fit in or be correct Desire to comply with authority
Awareness Often unconscious Usually conscious

The Bystander Effect

Darley and Latané (1968) found that the more bystanders present during an emergency, the less likely any individual is to help. This occurs because of diffusion of responsibility.

Likelihood of Helping Number of Bystanders High Low Alone: 85% 2 others 4 others Many: 31% 1 3 5 10+

Group Dynamics

Social Facilitation
Performing simple tasks better in front of others, but complex tasks worse. The presence of others increases arousal.
Social Loafing
Putting in less effort when working in a group because individual contributions are less identifiable.
Groupthink
Groups prioritize harmony over accuracy, suppressing dissent and ignoring alternatives. Classic example: Bay of Pigs.

Cognitive Dissonance

Leon Festinger (1957) proposed that when our actions conflict with our beliefs, we experience uncomfortable psychological tension called cognitive dissonance. To reduce this dissonance, we often change our beliefs to match our actions.

Belief "Smoking is bad" Action "I smoke daily" Dissonance Resolve by: Change Belief "It's not that bad" Change Action "I'll quit smoking" Add Justification "It reduces my stress"

How to Analyze Social Situations

1
Identify the behavior. What specific action is occurring? Be precise and observable.
2
Consider situational factors. What group pressure, authority, norms, or context could explain the behavior?
3
Consider dispositional factors. What personality traits or attitudes might play a role? Be careful not to overweight these.
4
Identify the social phenomenon. Which concept best explains the behavior: conformity, obedience, bystander effect, groupthink, or dissonance?
5
Predict outcomes. How would changing the situation (e.g., removing the authority figure, reducing group size) change the behavior?

Example: The New Employee

Scenario: Maria just started a new job. During a team meeting, her manager proposes a marketing plan. Maria notices several flaws but stays silent because everyone else is nodding in agreement.

1
Behavior: Maria stays silent despite having a different opinion.
2
Situational factors: New employee (low status), authority figure present, unanimous group agreement.
3
Social phenomenon: Conformity (adjusting to peer norms) + elements of obedience (authority of the manager).
4
Risk: Could lead to groupthink if no one voices dissent.

Example: The Campus Incident

Scenario: A student collapses in the middle of a crowded dining hall. Despite 200 students being present, it takes over 3 minutes before anyone calls for help.

Bystander Effect
With 200 people present, each individual feels less personal responsibility to act.
Pluralistic Ignorance
Everyone looks around and sees others not reacting, so they interpret the situation as not serious.

Example: Foot-in-the-Door Technique

Scenario: A researcher first asks people to sign a small petition for safe driving. Two weeks later, they ask the same people to put a large, ugly sign on their lawn. Those who signed the petition were far more likely to agree to the sign.

Small Request "Sign this petition" Easy to say yes Consistency "I'm a person who cares about safety" Self-perception shifts Large Request "Put up this sign" 76% agreed Cognitive Dissonance drives compliance Freedman & Fraser (1966)

Common Mistakes on the AP Exam

✕ Confusing FAE with Self-Serving Bias
FAE is about judging others (overusing dispositional attributions). Self-serving bias is about judging ourselves (taking credit for success, blaming situations for failure).
✕ Mixing Up Conformity and Obedience
Conformity involves peer pressure (equal status). Obedience involves authority pressure (unequal status). The source of the pressure is the key difference.
✕ Ignoring Situational Explanations
On free-response questions, students often explain behavior with only personality traits. Always consider the situational context first: this is what social psychology is about.

Summary: Key Concepts

Concept Definition Key Study
Fundamental Attribution Error Over-attributing others' behavior to disposition Ross (1977)
Conformity Adjusting behavior to match group norms Asch (1951)
Obedience Complying with authority commands Milgram (1963)
Bystander Effect Less helping as group size increases Darley & Latané (1968)
Cognitive Dissonance Discomfort from conflicting beliefs/actions Festinger (1957)
Groupthink Harmony over critical thinking in groups Janis (1972)

Question 1 of 5

A teacher assumes a student who failed an exam did so because the student is "not very smart," without considering that the student was dealing with a family crisis. This best illustrates the:

Question 2 of 5

In Asch's conformity studies, which of the following conditions most reduced the rate of conformity?

Question 3 of 5

Which of the following best explains why 65% of participants in Milgram's experiment administered the maximum shock level?

Question 4 of 5

A person who volunteers for a charity, then later describes themselves as "someone who really cares about helping others," is demonstrating:

Question 5 of 5

The committee's decision-making process best illustrates: