17.1 Person Perception and Attribution

Attribution Processes in Person Perception

Person perception refers to how we form impressions of other people and explain their behavior. Understanding this process matters because the mental shortcuts we rely on to navigate social life are the same ones that produce predictable errors in judgment. This section covers the main attribution theories, the biases that distort them, and the cognitive machinery (schemas, heuristics) that drives it all.

Fundamental Attribution Error

The fundamental attribution error (FAE) is the tendency to overweight internal, dispositional factors and underweight external, situational factors when explaining someone else's behavior. It's one of the most robust findings in social psychology.

Say a coworker shows up late to a meeting. Your first instinct is probably "they're irresponsible" rather than "maybe there was an accident on the highway." You jump to a personality explanation and skip right past the situational one.

Why this matters:

• It produces incomplete explanations of behavior. You end up with a distorted picture of who someone is because you're ignoring half the causal story.
• It damages interpersonal relationships. If a stranger is rude to you, FAE pushes you toward "that person is a jerk" instead of considering that they might be dealing with a family crisis or a terrible day at work.
• It's asymmetric. You typically don't make this error about yourself, only about others. (That asymmetry has its own name; see actor-observer bias below.)

Internal vs. External Attributions

Every time you explain someone's behavior, you're making an attribution, a causal judgment about why they did what they did. These fall into two broad categories:

• Internal (dispositional) attributions point to something about the person: their effort, ability, personality, or motivation. "She aced the exam because she's brilliant."
• External (situational) attributions point to something about the circumstances: task difficulty, luck, social pressure, or timing. "She aced the exam because it was easy."

Two dimensions help you classify attributions further:

• Locus of control: Is the cause inside the person or outside them?
• Stability: Is the cause consistent over time (like ability) or variable (like luck)?

Internal attributions tend to feel more stable and predictive, which is partly why we lean on them. If you decide someone is "lazy," that feels like it tells you something about their future behavior. Situational explanations feel less informative, even when they're more accurate.

Factors in the Attribution Process

Several biases and information sources shape which attributions you land on:

Actor-observer bias. You tend to explain your own behavior with external attributions but explain other people's behavior with internal ones. Part of this comes from a literal difference in perspective: when you act, you're looking outward at the situation; when you watch someone else act, you're looking at them. You also have more information about the situational pressures on yourself than on a stranger.

Self-serving bias. You take credit for successes ("I studied hard") and deflect blame for failures ("the test was unfair"). This protects self-esteem. It's distinct from actor-observer bias because it's specifically tied to outcomes being positive or negative, not just to whether you're the actor or the observer.

Covariation information. Harold Kelley's model says we use three types of information to decide on an attribution:

1. Consensus: Do other people behave the same way in this situation? (High consensus suggests an external cause.)
2. Distinctiveness: Does this person behave this way only in this particular situation? (High distinctiveness suggests an external cause.)
3. Consistency: Does this person behave this way in this situation repeatedly over time? (High consistency supports either type, depending on the other two.)

Cultural influences. People in individualist cultures (e.g., the U.S.) tend to favor dispositional attributions, while people in collectivist cultures (e.g., Japan, India) are more likely to consider situational factors. The FAE is stronger in individualist societies, though it appears cross-culturally to some degree.

Cognitive Processes in Person Perception

Schemas and Heuristics

Your brain doesn't evaluate every person from scratch. Instead, it relies on schemas, organized knowledge structures that set expectations and guide interpretation.

• Person schemas are your mental models of specific individuals ("my roommate is outgoing and disorganized").
• Role schemas are expectations tied to social positions ("professors are knowledgeable," "doctors are trustworthy").
• Event schemas (also called scripts) are expectations about how situations unfold ("at a restaurant, you sit down, read the menu, order, eat, pay").

Heuristics are the mental shortcuts you use to make fast judgments:

• The availability heuristic leads you to judge something as more common or likely if examples come to mind easily. If you can quickly recall a news story about a plane crash, you might overestimate how dangerous flying is.
• The representativeness heuristic leads you to judge someone based on how closely they match a prototype. If someone "looks like" an engineer, you assume they are one, even if the base rate makes that unlikely.

How Impressions Form and Persist

Several effects shape the trajectory of an impression once it starts forming:

• Primacy effect: First impressions carry disproportionate weight. The information you encounter earliest about a person tends to anchor your overall judgment.
• Recency effect: In some contexts (especially when there's a delay), the most recent information dominates instead.
• Implicit personality theories: You carry unconscious assumptions about which traits go together. If you learn someone is "warm," you might automatically assume they're also generous and honest, even without evidence.

Once an impression forms, confirmation bias kicks in. You selectively notice, seek out, and remember information that fits your existing belief about the person, while ignoring or discounting contradictory evidence. This is one reason first impressions are so sticky.

Stereotypes function as a specific type of schema applied to social groups. When a stereotype is activated, it filters how you interpret ambiguous behavior. The same action (say, a firm handshake) might be read as "confident" for one person and "aggressive" for another, depending on which group schema is active. This filtering often happens automatically, outside conscious awareness.