Social Psychology and Personality
How people explain behavior, how groups shape individual choices, how psychologists describe personality, and what drives motivation and emotion.
Developing Understanding
Unit 4 looks outward to how people understand and influence each other, then inward to relatively stable patterns of personality, motivation, and emotion. Expect scenario-based questions that ask you to apply a concept like conformity or the fundamental attribution error to a specific situation rather than just define it.
What you need to know for Unit 4
These groupings follow the order terms are introduced in the course. Be ready to explain and apply each one, not just define it.
Attribution and Attitudes
Attribution explains why people behave as they do, and the fundamental attribution error is the tendency to overemphasize personality over situation when judging others, while self-serving bias protects one's own self-image. Cognitive dissonance can drive attitude change, which can happen through careful central-route persuasion or superficial peripheral-route persuasion.
Social Influence
Conformity can stem from normative social influence (wanting approval) or informational social influence (wanting accuracy), and obedience describes compliance with direct authority. In groups, social facilitation, social loafing, group polarization, and groupthink all describe how performance and decisions shift when others are present.
Helping, Liking, and Bias
The bystander effect and diffusion of responsibility explain why people are less likely to help when others are present. The mere exposure effect explains increased liking through repeated contact, while stereotypes, prejudice, discrimination, and in-group bias describe how group membership shapes belief and behavior toward others.
Personality Perspectives
Major perspectives explain personality differently: psychodynamic (unconscious conflict), humanistic (growth and free will), trait (stable characteristics like the Big Five), and social-cognitive (interaction of thought, behavior, and situation, including reciprocal determinism, self-efficacy, and locus of control).
Motivation
Intrinsic motivation comes from internal satisfaction; extrinsic motivation comes from external rewards. Drive-reduction theory ties motivation to restoring homeostasis, and the Yerkes-Dodson law describes how optimal arousal depends on task difficulty.
Theories of Emotion
The James-Lange theory says physiological arousal comes first and produces emotion; the Cannon-Bard theory says arousal and emotion happen at the same time; the two-factor theory adds a cognitive label to arousal; and the facial feedback effect suggests expressions themselves can shape feeling.
Unit 4 Vocabulary
All 39 terms for this unit, grouped to match the key concepts above. Prefer flashcards? Use the flashcard tool filtered to Unit 4.
Attribution and Attitudes
Attribution
An explanation for the causes of behavior.
Fundamental Attribution Error
Tendency to overemphasize dispositional causes and underestimate situational causes when explaining others' behavior.
Self-Serving Bias
Tendency to credit successes to oneself and blame failures on outside factors.
Cognitive Dissonance
Discomfort from inconsistent attitudes or behavior that can motivate attitude change or rationalization.
Central Route Persuasion
Attitude change based on careful consideration of arguments and evidence.
Peripheral Route Persuasion
Attitude change based on superficial cues such as attractiveness, emotion, or credibility.
Social Influence
Conformity
Adjusting behavior or beliefs to match a group standard.
Normative Social Influence
Conforming to gain approval or avoid rejection.
Informational Social Influence
Conforming because others are viewed as a source of accurate information.
Obedience
Changing behavior in response to a direct command from an authority.
Social Facilitation
Improved performance on easy or well-learned tasks, and sometimes impaired performance on difficult tasks, in the presence of others.
Social Loafing
Reduced individual effort when working in a group on a shared task.
Group Polarization
Strengthening of a group's prevailing attitudes after discussion.
Groupthink
Poor group decision making caused by pressure for harmony and insufficient critical evaluation.
Helping, Liking, and Bias
Bystander Effect
Reduced likelihood of helping when other potential helpers are present.
Diffusion Of Responsibility
Reduced personal sense of obligation when responsibility is shared among many people.
Mere Exposure Effect
Increased liking for a stimulus after repeated exposure.
Stereotype
A generalized belief about members of a group.
Prejudice
An unjustified negative attitude toward a group and its members.
Discrimination
Unjustified negative behavior toward a group or its members.
In-Group Bias
Favoring one's own group over other groups.
Personality Perspectives
Psychodynamic Perspective
A perspective emphasizing unconscious processes, conflict, and early experiences.
Humanistic Perspective
A perspective emphasizing growth, personal meaning, free will, and self-concept.
Trait Perspective
A perspective describing personality in terms of relatively stable characteristics.
Big Five
A broad trait model including openness, conscientiousness, extraversion, agreeableness, and neuroticism.
Social-Cognitive Perspective
A perspective emphasizing interaction among cognition, behavior, and social situations.
Reciprocal Determinism
Mutual influence among behavior, personal factors, and environment.
Self-Efficacy
Belief in one's ability to succeed at a particular task or situation.
Internal Locus Of Control
Belief that outcomes are strongly influenced by one's own actions.
External Locus Of Control
Belief that outcomes are strongly influenced by outside forces or chance.
Motivation
Intrinsic Motivation
Engaging in an activity because it is inherently interesting or satisfying.
Extrinsic Motivation
Engaging in an activity to obtain an external reward or avoid punishment.
Drive-Reduction Theory
A motivation theory proposing that physiological needs create aroused states that motivate behaviors restoring balance.
Homeostasis
A tendency for biological systems to maintain stable internal conditions.
Yerkes-Dodson Law
The principle that optimal arousal varies with task difficulty, with very high arousal often harming complex performance.
Theories of Emotion
James-Lange Theory
The theory that awareness of physiological responses contributes to the experience of emotion.
Cannon-Bard Theory
The theory that emotional experience and physiological arousal occur simultaneously.
Two-Factor Theory
The theory that emotion reflects physiological arousal plus a cognitive label based on context.
Facial Feedback Effect
The idea that facial expressions can influence emotional experience.
AP-Style Practice Questions
Try these multiple-choice questions drawn from the Unit 4 question bank. Click "Show Answer" to check your work and read the explanation. Want more? Build a full set on the Practice Exam page.
On an AP Psychology practice question, a student needs to correctly apply self-efficacy. Which description should the student choose?
- A. Belief in one's ability to succeed at a particular task or situation.
- B. Unjustified negative behavior toward a group or its members.
- C. Attitude change based on superficial cues such as attractiveness, emotion, or credibility.
- D. Reduced likelihood of helping when other potential helpers are present.
On an AP Psychology practice question, a student needs to correctly apply reliability. Which description should the student choose?
- A. Memory expressed without conscious recollection, such as skills or conditioned associations.
- B. The effect of how information is worded or presented on judgments and decisions.
- C. The consistency of a measurement or test.
- D. The perceptual organization of a focal object against its background.
On an AP Psychology practice question, a student needs to correctly apply psychodynamic perspective. Which description should the student choose?
- A. Conforming because others are viewed as a source of accurate information.
- B. The theory that emotional experience and physiological arousal occur simultaneously.
- C. A perspective emphasizing unconscious processes, conflict, and early experiences.
- D. A generalized belief about members of a group.
On an AP Psychology practice question, a student needs to correctly apply bipolar disorder. Which description should the student choose?
- A. A person's evaluations and feelings about the quality of their life.
- B. A mood disorder involving episodes of mania or hypomania, usually along with depressive episodes.
- C. Psychotherapy delivered to multiple clients together.
- D. An event or condition that can trigger a stress response.
On an AP Psychology practice question, a student needs to correctly apply prejudice. Which description should the student choose?
- A. Increased liking for a stimulus after repeated exposure.
- B. An unjustified negative attitude toward a group and its members.
- C. A perspective emphasizing unconscious processes, conflict, and early experiences.
- D. Belief in one's ability to succeed at a particular task or situation.
On an AP Psychology practice question, a student needs to correctly apply Cannon-Bard theory. Which description should the student choose?
- A. A perspective emphasizing growth, personal meaning, free will, and self-concept.
- B. The idea that facial expressions can influence emotional experience.
- C. Reduced individual effort when working in a group on a shared task.
- D. The theory that emotional experience and physiological arousal occur simultaneously.
On an AP Psychology practice question, a student needs to correctly apply NREM sleep. Which description should the student choose?
- A. A brainstem network important for arousal and alertness.
- B. Non-rapid-eye-movement sleep, including progressively deeper stages.
- C. A parietal-lobe region processing touch and body sensations.
- D. The cortical lobe that contains primary visual processing areas.
On an AP Psychology practice question, a student needs to correctly apply cognitive dissonance. Which description should the student choose?
- A. Changing behavior in response to a direct command from an authority.
- B. An unjustified negative attitude toward a group and its members.
- C. Discomfort from inconsistent attitudes or behavior that can motivate attitude change or rationalization.
- D. The theory that emotional experience and physiological arousal occur simultaneously.
On an AP Psychology practice question, a student needs to correctly apply obsessive-compulsive disorder. Which description should the student choose?
- A. Attempting to reduce emotional distress rather than directly changing the stressor.
- B. Therapy that applies learning principles to change problem behaviors.
- C. A disorder involving obsessions, compulsions, or both that cause significant distress or impairment.
- D. A disorder involving major disturbances in thought, perception, emotion, and behavior.
On an AP Psychology practice question, a student needs to correctly apply normal distribution. Which description should the student choose?
- A. Difficulty seeing an object as useful in a new way beyond its usual function.
- B. A symmetrical bell-shaped distribution in which many scores cluster near the mean.
- C. Seeking or interpreting information in ways that support existing beliefs.
- D. A quick mental shortcut that is efficient but can produce errors.
How to Study This Unit
Practice the Theories of Emotion Side by Side
James-Lange, Cannon-Bard, and two-factor theory are frequently tested against each other — make a simple chart comparing the order of arousal and emotion in each.
Look for the Group Size
Social loafing shows up in group tasks with a shared, unmeasurable contribution; social facilitation shows up when individual performance is observable. The scenario details usually reveal which applies.
Personality Perspective Keywords
Match keywords to perspectives quickly: "unconscious" → psychodynamic, "self-actualization" → humanistic, "Big Five" → trait, "reciprocal determinism" → social-cognitive.