AP Psychology · Lesson 22 of 30
PsyIQ · AP Psychology

Lesson 22: Social Thinking & Influence

Unit 4 · Social Psychology and Personality (15–25%) · Science Practices:** 1 — Concept Application (primary); 4 — Argumentation (FRQ); 3 — Data Interpretation (supporting)
Objectives:
  • Explain how people infer the *causes* of behavior, and name the predictable biases that warp those inferences (fundamental attribution error, actor–observer bias, self-serving bias).
  • Distinguish how attitudes and behavior pull on each other — through persuasion routes, foot-in-the-door, and cognitive dissonance — and attach the right researcher to each idea.
  • Compare conformity (Asch) and obedience (Milgram) precisely, including the conditions that crank social pressure up or down, and evaluate the Stanford Prison study's findings *and* its methodological flaws.

(a) Hook

Someone cuts you off in traffic. Instantly, automatically, you know exactly what kind of person they are: a reckless jerk. You don't think maybe they're rushing a kid to the ER — you think jerk. Now flip it. Last week you cut someone off, and you knew it was because the sun was in your eyes and you were already late. Same behavior, two completely different explanations, and the only thing that changed was whose side of the windshield you were on.

That asymmetry isn't laziness. It's a built-in feature of how human brains assign blame, and once you see it you'll catch yourself doing it ten times a day. This lesson is about the machinery of social thinking — how you explain other people's behavior — and social influence — how other people quietly rewrite yours. By the end you'll understand why a perfectly ordinary college student would deliver what they believed were 450-volt shocks to a screaming stranger, simply because a man in a lab coat said "the experiment requires that you continue."

(b) Core Concepts

Attribution: how you explain behavior

Every time someone acts, your brain runs a quiet investigation: why did they do that? Attribution theory describes how we explain the causes of behavior, and the central fork is this. A dispositional attribution (also called internal) credits the behavior to something inside the person — their personality, character, attitude, or ability. A situational attribution (external) credits it to something outside the person — the circumstances, the environment, social pressure, luck. "He failed the test because he's lazy" is dispositional. "He failed because the test was unfair and he was sick" is situational.

Here's the catch: we are systematically biased toward one side. The fundamental attribution error (FAE) is the tendency, when explaining other people's behavior, to overestimate the influence of disposition and underestimate the influence of the situation. We see the jerk, not the emergency. The FAE is "fundamental" because it's so pervasive — and notice the direction carefully: it's about over-attributing to the person.

A close relative is the actor–observer bias: we tend to attribute our own behavior to the situation (we're the actor) but others' behavior to their disposition (we're the observer). You were late because of traffic; your coworker was late because they're disorganized. Same lateness, attribution flips depending on whose behavior it is.

When the outcome is about us specifically, a self-flattering twist appears. The self-serving bias is the tendency to attribute our successes to disposition ("I aced it because I'm smart") and our failures to the situation ("I bombed it because the teacher writes terrible questions"). It protects self-esteem. Don't confuse it with the FAE: the FAE is about over-blaming other people's character; the self-serving bias is about protecting your own ego by taking credit for wins and dodging blame for losses.

Try This. For the next three things that annoy you about other people today, force yourself to generate one situational explanation each before you accept the dispositional one. ("She ignored my text" → maybe she's drowning at work, not snubbing me.) You're manually overriding the FAE. It's harder than it sounds — which is exactly the point.

Attitudes and behavior: a two-way street

An attitude is a feeling, belief, or evaluation that predisposes you to respond a certain way toward something. We assume attitudes drive behavior — and sometimes they do. But the more surprising direction is that behavior shapes attitudes, and that's where the famous mechanisms live.

Start with persuasion. The elaboration likelihood model says attitudes change through two routes. The central route persuades through the content of the argument — logic, evidence, strong reasons — and works when people are motivated and able to think carefully. The peripheral route persuades through surface cues — an attractive spokesperson, a catchy jingle, sheer repetition — and works when people aren't thinking hard. A car ad full of fuel-economy data is central route; a car ad that's just a celebrity looking cool is peripheral.

Now the behavior-first tricks. The foot-in-the-door phenomenon is the tendency for people who agree to a small request to later comply with a larger one. Get someone to put a tiny sign in their window, and they're more likely to later allow a giant billboard on their lawn — because agreeing to the small ask quietly shifts their self-image ("I'm the kind of person who supports this"), and the big ask now fits.

The heavyweight concept here is cognitive dissonance theory, proposed by Leon Festinger (1957). Cognitive dissonance is the uncomfortable tension we feel when our behavior conflicts with our attitudes (or when two beliefs clash). Because the tension is unpleasant, we're motivated to reduce it — and the easiest fix is usually to change the attitude to match the behavior we already performed. In Festinger and Carlsmith's classic study, participants who were paid only $1 to tell a lie (that a boring task was fun) ended up rating the task as genuinely more enjoyable than those paid $20. Why? The $20 group had a tidy external justification ("I lied for the money"), so no dissonance. The $1 group had no good external reason, so the tension resolved internally: "I guess the task really wasn't that bad." Behavior changed attitude. This is the precise engine you must be able to name.

Role-playing and the Stanford Prison study

Philip Zimbardo's Stanford Prison study (1971) took the dissonance idea further: give ordinary people a role, and the role can swallow the person. Zimbardo randomly assigned college-student volunteers to be "guards" or "prisoners" in a mock basement prison. Within days, guards reportedly became abusive and prisoners passive and distressed, and the planned two-week study was halted after six. Zimbardo's interpretation: situational forces and assigned social roles can drive good people toward cruelty — a dramatic illustration of situational attribution.

But you must hold this study honestly, because modern scholarship has hammered its methodology. There was no control group and no real experiment — it was a demonstration, not a controlled study. Recordings later revealed Zimbardo and his staff actively coached guards to be tough (so behavior wasn't purely spontaneous), some participants reported acting rather than transforming, and demand characteristics loomed large — participants may have done what they thought the experimenters wanted. Replication has been weak and ethically impossible to repeat cleanly. The exam-safe takeaway: the study is famous and suggestive about the power of roles, but it's methodologically flawed and shouldn't be cited as airtight proof of anything.

Conformity: matching the group

Conformity is adjusting your behavior or thinking to align with a group standard. Solomon Asch (1951) ran the iconic demonstration. Participants judged which of three comparison lines matched a standard line — an absurdly easy perceptual task. But the participant was surrounded by confederates who, on certain "critical" trials, unanimously gave the same wrong answer out loud. Result: real participants went along with the obviously wrong group answer on about one-third (≈33%) of critical trials, and about 75% conformed at least once. People knew the right answer and gave the wrong one anyway, just to match the group.

Why do we conform? Two distinct pressures. Normative social influence is conforming to fit in / be liked / avoid rejection — you go along even when you privately disagree, for social approval. Informational social influence is conforming because you believe the group might actually be right — you use others as a source of information, especially in ambiguous situations. Asch's line task is mostly normative (the answer was obvious; people caved socially). A study where people copy strangers in a genuinely confusing situation is informational. Mnemonic: Normative = Need to be liked; Informational = Information to be right.

Obedience: following authority

Conformity is matching peers; obedience is following the direct commands of an authority figure. Stanley Milgram (1963), haunted by how ordinary Germans participated in the Holocaust, built the most chilling study in psychology's history (full spotlight below). The headline figure to memorize: about 65% of participants obeyed all the way to the maximum 450 volts, continuing to deliver what they believed were dangerous shocks because an experimenter calmly insisted they go on.

Milgram's follow-ups mapped the conditions that move obedience. Obedience dropped when: the victim was closer/more visible, the experimenter gave orders by phone (remote authority), the study left prestigious Yale for a run-down office, or another "teacher" rebelled (a disobedient peer model). Obedience rose with: an authoritative, legitimate-seeming experimenter; a prestigious setting; gradual escalation (the foot-in-the-door logic again — each small voltage step makes the next feel reasonable); and the experimenter taking responsibility. The lesson isn't "some people are evil." It's that ordinary people, under the right situational pressures, do extraordinary harm — situational attribution at full volume.

(c) Classic Studies Spotlight

Milgram's obedience experiments (Stanley Milgram, Yale, 1963).

Who & when: Stanley Milgram, Yale University, first published 1963.

Method: Forty adult men were recruited for a study supposedly about "learning and memory." Each was assigned (through a rigged drawing) the role of "teacher," while a confederate played the "learner." The teacher was ordered to administer increasingly powerful electric shocks — from 15 up to 450 volts, labeled "Danger: Severe Shock" and finally "XXX" — each time the learner made an error. No real shocks were delivered, but the teacher didn't know that. As voltage climbed, the learner (in another room) cried out, complained of a heart condition, and eventually fell silent. When teachers hesitated, the experimenter issued scripted prods: "Please continue," "The experiment requires that you continue," "You have no other choice, you must go on."

Findings: About 65% (26 of 40) of participants obeyed fully, delivering the final 450-volt shock. Nearly all showed visible distress — sweating, trembling, nervous laughter — yet still obeyed. Obedience wasn't about cruelty; it was about the crushing pressure of legitimate authority.

Significance: Milgram demonstrated that situation and authority, not personality, predict obedience — and that ordinary people will inflict harm under command. It's the AAQ-and-FRQ workhorse for situational attribution, and it reshaped research ethics (the deception and distress it caused helped drive modern IRB and informed-consent standards).

(d) Application Practice

Scenario 1. Maya's friend group has decided a certain new show is "the best thing ever." Maya secretly finds it boring, but when everyone gushes about it at lunch, she nods along and says she loves it too — she doesn't want to be the odd one out.

Which concept, and what's the giveaway? This is conformity driven by normative social influence. The tells: Maya privately disagrees (she finds it boring) but publicly matches the group, and her stated motive is social — not wanting to be "the odd one out." Because she's responding to peers, not an authority's command, it's conformity, not obedience.

Scenario 2. A volunteer at a phone bank first asks homeowners to sign a small petition. A week later, the same homeowners are far more willing to host a large yard sign for the campaign than neighbors who were never asked to sign.

Which concept explains the jump in compliance? The foot-in-the-door phenomenon. Agreeing to the small request (the petition) shifted the homeowners' self-image toward "I support this cause," making the larger request (the yard sign) consistent with who they now see themselves as. Note this is not cognitive dissonance per se, though the same self-consistency drive underlies both.

Scenario 3. Dev spent $400 on a concert ticket, then discovered the opening act he wanted was cut and the venue is terrible. Afterward, he tells everyone the show was "absolutely worth it — one of the best nights of my life."

Which concept? Cognitive dissonance (Festinger). Dev's behavior (spending $400 and attending) clashes with the reality (a disappointing show), creating tension. Since he can't undo the spending, he reduces dissonance by changing his attitude to match his behavior — convincing himself it was worth it. Behavior reshaped attitude. (Compare to a self-serving bias answer, which would only apply if he were explaining a personal success or failure.)

(e) Traps & Confusions

Fundamental attribution error vs. self-serving bias. Both involve attribution, easy to swap. The FAE is about other people: you over-blame their character and ignore their situation. The self-serving bias is about yourself: you credit your successes to your character and blame your failures on the situation. Keep them straight: FAE = "they're like that"; self-serving = "I succeed because I'm great, I fail because of bad luck."

Normative vs. informational social influence. Both produce conformity. Normative = you conform to be liked and avoid rejection (you may privately disagree). Informational = you conform because you think the group is actually right, especially when you're unsure. Test tip: if the situation is ambiguous and the person genuinely doesn't know the answer, lean informational; if the answer is obvious but they cave to social pressure (like Asch's lines), lean normative.

Conformity vs. obedience. Both are social influence, but the source differs. Conformity = matching the behavior of peers / a group (no one orders you). Obedience = following the direct command of an authority figure. Asch = conformity (equal-status confederates). Milgram = obedience (a commanding experimenter). If there's a boss/authority issuing orders, it's obedience.

Cognitive dissonance vs. "attitude follows behavior." Students treat these as separate facts. They're the same engine: cognitive dissonance is the uncomfortable tension when behavior and attitude clash; "attitude follows behavior" is the resolution — you change the attitude to fit what you already did. Dissonance is the problem; changing the attitude is the fix. Festinger's $1/$20 study is the canonical example.

(f) Practice Problems

Four-choice MCQs in current AP format. Answers and explanations in section (h).

Question 1
A student sees a classmate trip in the hallway and immediately thinks, "Wow, she's so clumsy," without considering that the floor was wet. This best illustrates
Question 2
In Asch's line-judgment experiments, participants conformed to the group's obviously incorrect answer on approximately what percentage of critical trials?
Question 3
A salesperson first asks a customer to answer a quick two-question survey, then later asks them to purchase a full subscription. The customer, having agreed to the small request, is now more likely to agree to the large one. This reflects
Question 4
In Milgram's original obedience study, approximately what percentage of participants delivered the maximum 450-volt shock?
Question 5
After failing a job interview, Carlos tells his friends the interviewer was incompetent and the questions were unfair. After a different interview that went well, he says he nailed it because he's a strong communicator. Carlos is displaying
Question 6
Which scenario best illustrates informational social influence?
Question 7
A car commercial features a famous athlete simply looking happy while driving, with no information about the car's features. This ad relies on
Question 8
Which of the following is the most accurate methodological criticism of Zimbardo's Stanford Prison study?
Question 9
A participant in a memory experiment continues administering what she believes are painful shocks because the experimenter in a lab coat repeatedly says, "The experiment requires that you continue." This behavior is best described as
Question 10
In Festinger and Carlsmith's classic study, participants paid only $1 to describe a boring task as enjoyable later rated the task as more enjoyable than those paid $20. This is best explained by
Question 11
Marcus is late to work because of a traffic jam, and he explains it that way. When his coworker is late, Marcus assumes the coworker is just irresponsible. This pattern illustrates
Question 12
Data interpretation. In several variations of Milgram's study, the percentage of participants who fully obeyed varied by condition, as shown below: | Condition | % delivering 450 V | |---|---| | Baseline (experimenter present, prestigious setting) | 65% | | Experimenter gives orders by telephone | 21% | | Study moved to a run-down office building | 48% | | A disobedient peer "teacher" present | 10% | Which conclusion is best supported by these data?
Question 13
A psychology teacher persuades a skeptical class to support a new policy by presenting detailed evidence and well-reasoned arguments, knowing the students are motivated and paying close attention. The teacher is using
Question 14
Which pairing correctly matches a researcher with their contribution?
Question 15
A student argues, "Milgram's study proves some people are simply born cruel." The best correction is that Milgram's findings actually suggest

(g) FRQ Practice — Article Analysis Question (AAQ)

Respond to all six parts (A–F) in complete sentences using appropriate psychological terminology. Part F carries 2 points; all others 1 point each (7 total).

Stimulus — summarized study

Introduction. Researchers investigated whether the presence of a disobedient peer model affects how willing people are to comply with an authority figure's escalating, ethically questionable instructions. They predicted that watching a peer refuse would reduce participants' own compliance.

Participants. 120 adult community volunteers (ages 21–60, M = 38.2, SD = 9.4) were recruited through public flyers and compensated $30 for their time. The sample was 51% women and 49% men; self-reported race/ethnicity was 60% White, 18% Hispanic/Latino, 12% Black, 8% Asian, and 2% Other. Before the study, all participants gave informed consent and were told they could withdraw at any point without losing their compensation. After the session, every participant was fully debriefed about the study's true purpose and the use of confederates.

Method. Participants were randomly assigned to one of two conditions. In both, an experimenter ("authority") directed each participant to read increasingly harsh, insulting "feedback" statements aloud to another person (a confederate) as part of a supposed "communication stress" task, with the statements escalating across 30 levels. In the peer-model condition, a confederate posing as a second participant refused to continue partway through ("I won't say these things — this isn't right"). In the control condition, no peer refused. The dependent variable was the highest feedback level (1–30) each participant was willing to read before refusing.

Results. Participants in the control condition continued to a mean of 24.6 of 30 levels (SD = 4.1). Participants in the peer-model condition continued to a mean of 11.3 of 30 levels (SD = 5.2). The difference was statistically significant.

A. Identify the research method used in this study.

B. State the operational definition of the dependent variable as used in this study.

C. Describe what the means indicate about the difference between the control condition and the peer-model condition. (Cite the numbers.)

D. Identify one ethical guideline the researchers applied, and describe how they applied it.

E. Explain the extent to which the findings are or are not generalizable, using specific evidence from the study.

F. Explain how the findings support or refute the claim that social-influence factors can reduce obedience to authority. In your explanation, apply an appropriate psychological concept. (2 points)

Model answer (earns 7/7)

A. The research method was an experiment, because participants were randomly assigned to conditions and the researchers manipulated an independent variable (the presence or absence of a disobedient peer model). (1 pt — names the method)

B. The dependent variable was operationally defined as the highest feedback level, on a 1-to-30 scale, that the participant was willing to read aloud before refusing to continue. (1 pt — concrete, measurable definition)

C. The means indicate that participants who saw a disobedient peer continued to a much lower feedback level than those in the control condition — a mean of 11.3 versus 24.6 levels, a difference of 13.3 levels — showing that the rebellious peer substantially reduced compliance with the authority's instructions. (1 pt — direction AND the cited numbers)

D. The researchers applied informed consent: before the study, all participants gave informed consent and were told they could withdraw at any time without losing compensation. (Debriefing would also earn the point — every participant was fully debriefed about the deception and the use of confederates afterward.) (1 pt)

E. The findings have moderate generalizability. On the supporting side, the sample was relatively broad — community volunteers across a wide age range (21–60) and a range of racial/ethnic backgrounds — which extends beyond the college-student samples common in this research. However, generalizability is limited because all participants were volunteers from a single recruitment pool who responded to flyers, and volunteers may differ systematically (e.g., in willingness to follow instructions) from the broader population. (1 pt — commits to a direction with study-specific evidence)

F. The findings support the claim that social-influence factors can reduce obedience to authority. Participants who watched a peer refuse stopped far earlier (11.3 vs. 24.6 levels), demonstrating that a disobedient peer model weakened the authority's pull. This applies the concept of the disobedient model / social modeling: just as in Milgram's variations, seeing another person defy authority provides a behavioral model and redefines the situation as one in which refusal is acceptable, lowering the participant's own obedience. The result fits the broader principle that obedience is driven by situational forces, not fixed personality — change the social situation (add a rebel), and obedience drops. (2 pts — states support/refute AND applies a genuine psychological concept)

Where students commonly lose points

🔑 Answer Key

1. (B) Fundamental attribution error. The student over-attributes the trip to the classmate's disposition ("clumsy") and ignores the situation (wet floor) — the definition of the FAE. (A) self-serving bias is about explaining one's own outcomes; (C) and (D) don't involve attribution of another's behavior.

2. (B) 33%. Asch found participants conformed to the obviously wrong group answer on roughly one-third of critical trials. (C) 65% is the Milgram obedience figure — a classic mix-up; (A) and (D) are simply wrong values.

3. (C) Foot-in-the-door phenomenon. Agreeing to a small request (the survey) increases compliance with a later large one (the subscription). (A) central route involves argument quality, not request size; (B) and (D) are unrelated mechanisms.

4. (C) 65%. About 65% (26 of 40) delivered the full 450 volts in Milgram's baseline study. (A) 33% is the Asch conformity figure; (B) and (D) are incorrect values.

5. (B) Self-serving bias. Carlos blames failure on the situation (incompetent interviewer) and credits success to his disposition (strong communicator) — protecting his ego. (A) the FAE concerns others' behavior; (C) and (D) don't fit a success/failure attribution about oneself.

6. (B). The tourist conforms because she genuinely doesn't know the customs and uses locals as a source of correct information — informational influence in an ambiguous situation. (A), (C), and (D) are all normative (fitting in, pleasing the boss, matching an obvious answer socially).

7. (B) Peripheral route. Persuasion through a surface cue (a famous, happy athlete) rather than argument content is the peripheral route. (A) central route requires substantive arguments, which the ad lacks; (C) and (D) are different processes.

8. (B). The Stanford Prison study lacked a control group and the guards were actively coached, raising serious concerns about demand characteristics — the central, accurate methodological criticisms. (A) is false (small, non-random sample); (C) involved no brain imaging; (D) is false — it has not been cleanly replicated.

9. (B) Obedience. She follows the direct commands of an authority figure (the experimenter), which defines obedience. (A) conformity involves peers, not an authority's orders; (C) and (D) are unrelated.

10. (B) Cognitive dissonance. With only $1, participants had no external justification for lying, so they reduced the tension by changing their attitude to match their behavior — deciding the task really was enjoyable. (A) involves request escalation; (C) and (D) don't explain the $1/$20 reversal.

11. (B) Actor–observer bias. Marcus attributes his own lateness to the situation (traffic) but his coworker's lateness to disposition (irresponsible) — the actor–observer pattern. (A) self-serving bias centers on success/failure of the self; (C) and (D) aren't attribution biases.

12. (B). The data show obedience fell with telephoned (less immediate) authority — 21% — and fell most with a disobedient peer present — 10% — supporting that reduced authority immediacy and a rebellious peer both lower obedience. (A) contradicts the variation across conditions; (C) is false (48% is not zero); (D) reverses the direction (telephone decreased obedience).

13. (B) Central route. Persuasion through detailed evidence and reasoning, with a motivated and attentive audience, is the central route. (A) peripheral relies on surface cues; (C) and (D) are different mechanisms.

14. (C) Festinger — cognitive dissonance theory. Festinger (1957) proposed cognitive dissonance. (A) Asch studied conformity, not obedience; (B) Milgram studied obedience, not line-judgment conformity; (D) the elaboration likelihood model is not Zimbardo's (he is the Stanford Prison study).

15. (B). Milgram's central conclusion is that situational pressures and legitimate authority — not inborn cruelty — primarily drove obedience; ordinary, distressed people obeyed. (A) overstates and misreads the finding; (C) is false (about 65% obeyed fully); (D) is false — participants believed the shocks were real, which is why the study was ethically fraught.

PsyIQ · Lesson 22 of 30 · Unit 4: Social Psychology and Personality. FRQ practice in this lesson is an Article Analysis Question (AAQ), scored on the 7-point rubric (5 × 1 pt + 1 × 2 pt). MCQ and AAQ practice modeled on the redesigned (2025+) AP Psychology exam. Not affiliated with the College Board. AP is a registered trademark of the College Board. Content pending external psychology QC.

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