Week 13 · Lecture outline

Week 13 — Lecture Outline · Social Psychology

Introduction to Psychology · PSYC 1 Fall 2026 · Prof. Bennett Fictional sample

Course: Introduction to Psychology (PSYC 1) · Silver Oak University (fictional sample) · Prof. Bennett
Objectives covered: Objective 8 — Apply psychological science to social behavior (the social-psychology portion).
SLOs touched: A (apply concepts to real-world behavior) · B (reason scientifically about claims regarding mind and behavior)
Meeting pattern: 2 sessions × 75 min = 150 min. Segment minutes below total ~150; scale to your own pattern. (Short-week note — see Timing.)

Week at a Glance


The week's big question	"How much of what people do is driven by who they are — and how much by the situation they're in?"
By the end of the week, students can…	(1) explain attribution — dispositional vs. situational — and spot the fundamental attribution error and the self-serving bias; (2) explain how attitudes and behavior shape each other (cognitive dissonance, foot-in-the-door, central vs. peripheral persuasion); (3) describe conformity (Asch) and obedience (Milgram) and the situational power they reveal; (4) define the main group-behavior effects (social facilitation, social loafing, groupthink, group polarization, deindividuation) and the bystander effect (diffusion of responsibility).
Key vocabulary	social psychology, attribution, dispositional, situational, fundamental attribution error, self-serving bias, attitude, cognitive dissonance, foot-in-the-door, central vs. peripheral route, conformity, normative influence, informational influence, obedience, social facilitation, social loafing, groupthink, group polarization, deindividuation, stereotype, in-group/out-group bias, prejudice, prosocial behavior, bystander effect, diffusion of responsibility
Materials	slides (Deck 13), the week's readings + video links, one approved chatbot (Gemini / Claude / ChatGPT) for the AI-critique moment and the tutorial
Timing note	8 segments, ~150 min total. Session 1 = Segments 1–4 (~75). Session 2 = Segments 5–8 (~75). Short week: Thanksgiving closes campus Thu Nov 26 (and Fri Nov 27), so on a Tue/Thu section only Tue Nov 24 meets — see the boxed plan below.

Teaching the short Thanksgiving week. On a Tuesday/Thursday section, only Tuesday Nov 24 meets this week (Thursday is the holiday). If you have a single 75-minute session, teach Segments 1, 2, 5, 6, and 8 live — that is attribution + the FAE (the signature example), conformity & obedience (the situational-power core), and the AI-critique/hand-off — and assign Segments 3–4 and 7 (attitudes/dissonance, group-behavior catalog, prejudice & the bystander effect) as the readings + the Lecture Tutorial, which covers all of it. The full 8-segment plan below is written for a normal two-session week so you can restore it in a non-holiday term.

Segment 1 — Hook & the Promise (8 min) · Session 1 opens

Hook. Put a single everyday scene on a slide and ask the room to explain it, fast:

"A driver cuts you off in traffic. Why did they do it?"
Take a few shouted answers. Almost everyone says some version of "what a jerk" — a statement about the kind of person the driver is. Then flip it: "Now — the last time you cut someone off, why did you do it?" The answers change instantly: "I was late," "I didn't see them," "there was an emergency." Same behavior, two completely different explanations.

Name what just happened: "When we explain other people, we reach for their personality. When we explain ourselves, we reach for the situation. That gap has a name — the fundamental attribution error — and chasing down why it happens is most of social psychology."

The promise (write it on the board): "By Friday you'll be able to take almost any social moment — someone conforming, obeying, helping, or staying silent — and explain it the way a social psychologist would: not 'what's wrong with that person,' but 'what was the situation doing to them.'"

Why it matters line (memory hook): "We badly overrate personality and underrate the situation — and the whole field is the cure."

Segment 2 — Attribution & the Fundamental Attribution Error (22 min)

Plain language first.
- Social psychology is the scientific study of how other people — present, imagined, or implied — shape our thoughts, feelings, and behavior.
- Attribution is the explanation we assign to a behavior. There are two basic kinds:
- Dispositional (internal): it's about the person — their personality, traits, attitude, character. ("He's rude.")
- Situational (external): it's about the circumstances — the setting, the pressure, the moment. ("He's rushing to the hospital.")

The fundamental attribution error (FAE): when explaining other people's behavior, we systematically over-weight disposition and under-weight the situation. We see the person, not the pressure they're under.

Memory hook (put it on a slide):

"For others, we blame the person. For ourselves, we blame the situation."

One fully worked example (the signature example — do it out loud).

A driver cuts you off. Your instant explanation: "What a jerk" — dispositional. You rarely think "maybe there's a baby in the back seat and they're racing to the ER" — the situational read you'd reach for in a heartbeat if it were you behind the wheel. The error isn't that the situational explanation is always right; it's that we barely consider it for other people. Why does it happen? When we watch someone else, the person is the vivid thing in our view; the situation is invisible background. When we act, we can't see ourselves — we see the situation pressing on us.

The self-serving bias (its close cousin): we take credit for our successes ("I aced it — I'm smart", dispositional) but blame the situation for our failures ("the test was unfair", situational). FAE is about how we explain others; the self-serving bias is about how we flatter ourselves.

Quick clarification students need:
- FAE and self-serving bias are not the same thing. FAE = over-blaming other people's character. Self-serving bias = protecting my own self-image. (This exact pair is the AI-critique trap in Segment 8 — flag it now.)

Segment 3 — Attitudes & Behavior: Cognitive Dissonance (22 min)

Plain language first. We assume attitudes drive behavior — and they do, somewhat. But the arrow also runs the other way: our behavior changes our attitudes.

Cognitive dissonance (Leon Festinger): the uncomfortable tension we feel when our actions and our attitudes don't line up. To kill the discomfort, it's often easier to change the attitude to match what we already did than to undo the behavior. "We don't just act on what we believe — we come to believe in what we've done."

One fully worked example (do it out loud).

A student volunteers for a dull, tedious campus committee — hours of boring work, no pay. Holding both "this is boring" and "I chose to spend my Saturdays here" is uncomfortable (dissonance). The cheapest fix isn't to quit; it's to revise the attitude: "Actually, this work really matters — I care about it." The behavior bent the belief. (Festinger and Carlsmith's 1959 study found exactly this: people paid only $1 to call a boring task "interesting" later believed it more than people paid $20 — the $20 group had an outside excuse, so they felt no dissonance.)

Two more attitude-and-behavior ideas (one line each):
- Foot-in-the-door phenomenon: agreeing to a small request makes you more likely to agree to a bigger one later — because you've already started seeing yourself as the kind of person who says yes. (Sign a petition today → donate next week.)
- Two routes to persuasion: the central route persuades through the strength of the argument (facts, evidence — sticks when people are paying attention); the peripheral route persuades through surface cues (an attractive spokesperson, a catchy slogan, sheer repetition — works when people aren't thinking hard).

Memory hook: "Attitudes shape actions — but actions also reshape attitudes."

Segment 4 — Misconceptions + Quick Interaction (23 min) · Session 1 closes (~75)

Name the misconceptions out loud, then cure each:

❌ "Behavior is driven mostly by personality, not the situation."
✅ Cure: this is the headline lesson of the whole week, and it's mostly backwards. Social psychology keeps finding that ordinary situations move people more than their personalities do — the FAE, Asch's conformity, Milgram's obedience. "Don't ask what kind of person does that — ask what kind of situation makes most people do that."
❌ "I would never conform or obey like those study participants — I'd resist."
✅ Cure: almost everyone predicts they'd resist, and almost everyone underestimates the pull of the situation. The shock of Asch and Milgram is precisely that normal people went along. Predicting you're the exception is itself part of the bias.
❌ "The more people who are around, the more likely someone gets helped."
✅ Cure: often the opposite — the bystander effect. When many people are present, responsibility diffuses ("someone else will handle it"), and any one person becomes less likely to act. More bystanders can mean less help. (We unpack this in Segment 7.)

Interaction — Think-Pair-Share (rapid-fire, ~10 min):
Put five short scenarios on a slide; for each, students decide "dispositional or situational explanation?" and whether it's an example of the FAE, solo (30 sec), compare with a neighbor (1 min), then thumbs up/down. Suggested items: "My coworker is late again — she's so irresponsible." · "I'm late because traffic was terrible." · "That cashier was short with me — what a rude person." · "He failed the exam because he's lazy." · "I failed because the questions were tricky." Debrief: notice how easily we flip to a situational read the moment the behavior is our own — that flip is the fundamental attribution error.

Segment 5 — Conformity & Obedience: The Power of the Situation (25 min) · Session 2 opens

Hook back in: "Last session: we over-blame personality. Today: two of the most famous studies in psychology, both showing the situation winning over what people swore they'd do."

Conformity — Asch's line studies (plain language).
- Conformity = adjusting our behavior or judgment to match a group.
- Solomon Asch (1950s) sat one real participant in a group of actors and asked everyone, out loud, which of three lines matched a target line. The answer was obvious. But when the actors all confidently gave the same wrong answer, about a third of the time the real participant went along with the group — giving an answer they could see was wrong. Across the study, most people conformed at least once.
- Why people conform — two engines:
- Normative influence: going along to fit in / avoid standing out (you know the group is wrong but don't want to be the odd one out).
- Informational influence: going along because you assume the group knows something you don't (you actually doubt your own judgment).

Obedience — Milgram's experiments (reference factually; note the ethics).
- Stanley Milgram (1960s) studied obedience to authority. Participants were instructed by an experimenter to deliver what they believed were increasingly strong electric shocks to another person (an actor — no one was actually shocked). Under steady pressure from the authority figure, a majority continued well past the point of apparent distress.
- The lesson (the only one we need): the result wasn't about cruel personalities — it was about situational power. Ordinary people, in a situation with a credible authority and step-by-step pressure, did things they would have predicted they'd refuse.
- Ethics note (state it plainly, no sensational detail): Milgram's studies caused real distress to participants and are a major reason research-ethics rules — informed consent, the right to withdraw, debriefing, IRB review (your Week 2 material) — exist today. We reference the finding; we don't re-stage the drama.

Memory hook: "Asch: the group bends what you'll say. Milgram: authority bends what you'll do."

Segment 6 — Group Behavior (18 min)

Set it up: "Put people in groups and predictable things happen to their effort, their judgment, and their sense of personal responsibility. Here's the catalog — five effects, one line and one example each."

The five group effects (plain language):
- Social facilitation: the presence of others improves performance on easy or well-practiced tasks (and tends to hurt hard, unfamiliar ones). A skilled musician plays better in front of a crowd; a nervous beginner plays worse.
- Social loafing: people put in less effort in a group than alone, because individual effort isn't visible. The group project where two people do most of the work.
- Groupthink: a tight, agreeable group makes a bad decision because the desire for harmony shuts down dissent and realistic appraisal. No one voices the obvious objection because everyone seems on board.
- Group polarization: discussion with like-minded people pushes the group's average opinion more extreme, not more moderate. A group leaning slightly for an idea leaves strongly for it.
- Deindividuation: in a group — especially anonymous or high-arousal — people lose self-awareness and restraint and do things they'd never do alone. The anonymity of a crowd or an online mob.

Land the through-line: social facilitation raises effort/performance (on easy tasks); social loafing, groupthink, and deindividuation all involve the individual's effort, judgment, or accountability dropping inside a group. (That contrast is exactly what the multiple-answer quiz item tests — flag it.)

Misconception + cure:
- ❌ "Groups always make better, more careful decisions than individuals."
✅ Cure: sometimes — but groupthink and group polarization show groups can be worse: more extreme, more blind to dissent. Good groups deliberately invite disagreement (a "devil's advocate").

Segment 7 — Prejudice & Prosocial Behavior: The Bystander Effect (20 min)

Plain language first — prejudice and its parts.
- A stereotype is a generalized belief about a group; prejudice is a (usually negative) attitude toward a group; discrimination is the behavior. Belief → feeling → action.
- In-group/out-group bias: we favor "us" (the in-group) over "them" (the out-group) — often automatically, just from being sorted into a group at all.

Prosocial behavior and the bystander effect (the worked idea).
- Prosocial behavior = acting to help others.
- The bystander effect: the more bystanders are present, the less likely any one of them is to help — the opposite of common sense.
- Why — diffusion of responsibility: when many people could act, responsibility spreads thin ("someone else will call 911"), so no one does. Add pluralistic ignorance — everyone stays calm because everyone else looks calm, so the group reads a real emergency as a non-event.

One worked example (do it out loud).

You feel faint on a crowded subway platform. Counterintuitively, you may be safer collapsing in front of one person than in front of forty — with one person, responsibility is 100% theirs; in a crowd, it's "someone else's." The fix is to undo the diffusion: point at one specific person and say "You — in the blue jacket — call 911." Naming one person collapses the diffusion and gets help moving. (This is the practical payoff of Latané and Darley's bystander research.)

Memory hook: "More bystanders, less help — because responsibility gets divided until no one owns it."

Segment 8 — Technology Workflow + AI-Critique, Callback & Hand-off (12 min) · Session 2 closes (~75)

Technology workflow — the situational-read habit, on demand:
1. Catch yourself making a snap judgment about someone ("what a jerk," "how lazy").
2. Write the dispositional explanation you reached for first.
3. Force one plausible situational explanation next to it — what circumstance could produce that same behavior?
4. Notice that you'd have given yourself the situational read automatically. That gap is the FAE, and naming it is the correction.

AI-critique moment (students verify, not consume):

Paste this to an approved chatbot: "What's the difference between the fundamental attribution error and the self-serving bias?" (or "Summarize what Milgram's obedience experiments found.")
Then check its work against today's lecture. Chatbots often blur the two biases — describing the self-serving bias as if it were the FAE — or, on Milgram, overstate the drama and bury the real finding (situational power over ordinary people) or muddle the ethics. Your job all semester: the tool drafts, you judge. This is exactly how the weekly Lecture Tutorial works — you'll catch the model, not trust it.

Callback + tease:
- Callback: "Two weeks ago we explained personality from the inside — traits, the unconscious, the self. This week flips it: the situation outside the person is doing more of the driving than we ever guess."
- Tease next week: "We've seen how other people get into our heads. Next week: what stress does to the body — the stress response, the general adaptation syndrome, and how coping protects your health."

Hand-off (the week's graded work):
- Lecture Tutorial 13 (AI tutor, share-link submission) — attribution & the FAE, dissonance, conformity & obedience, group behavior, and the bystander effect.
- Quiz 13 (end of week) and Discussion 13 ("The Power of the Situation" — analyze a time you or others conformed, obeyed, or stayed silent).
- Assignment 13 — name the phenomenon in scenarios, apply attribution theory, analyze a group/conformity/obedience scenario, and explain in plain language why "good people" can do harmful things in certain situations.

Instructor FAQ — Common Stumbles

Student says / does	Quick cure
Confuses the fundamental attribution error with the self-serving bias.	FAE = over-blaming other people's character for their behavior. Self-serving bias = crediting myself for wins, blaming the situation for my losses. Different target: others vs. me.
"I would never have conformed/obeyed."	That prediction is the bias. Most people say they'd resist; Asch and Milgram show most don't. The point is situational power over ordinary people.
Thinks more bystanders = more help.	The bystander effect is the opposite: responsibility diffuses, so any one person is less likely to act. Naming one person undoes it.
Mixes up social facilitation and social loafing.	Facilitation = others boost your effort/performance on an easy task. Loafing = you slack in a group because your effort isn't visible. One raises, one lowers.
Treats cognitive dissonance as just "feeling guilty."	It's specifically the tension from an attitude–behavior mismatch, resolved by changing the attitude to fit the behavior (Festinger). The direction — behavior → attitude — is the surprising part.
Uses stereotype, prejudice, discrimination interchangeably.	Stereotype = belief; prejudice = attitude/feeling; discrimination = behavior. Belief → feeling → action.
Thinks groups always decide better.	Groupthink and group polarization show groups can be worse — more extreme, blind to dissent. Good groups invite disagreement.
Describes Milgram with sensational detail.	Keep it factual: instructed obedience, an actor (no real shocks), a majority continued; the finding is situational power, and it drove modern research-ethics rules.

Scope flag

This outline stays within Objective 8's social-psychology portion — attribution, attitudes & dissonance, conformity & obedience, group behavior, and prejudice & prosocial behavior. Stress, health, and coping are Week 14; psychological disorders and their treatment are Week 15; both are only gestured at here. Classic studies (Asch, Milgram, Festinger, Latané & Darley) and figures are referenced factually and accurately as part of the discipline's real history; Milgram is treated non-sensationally, with the ethical issues named but no graphic detail. The instructor and institution remain fictional. (Short-week note: see the Timing box — only Tue Nov 24 meets on a Tue/Thu section this Thanksgiving week.)

~ Prof. Bennett's edition · Fall 2026 · built with thecoursemaker.com