Psychology › Social psychology
Social cognition: how we judge people
· Concept
Well replicatedStrong, repeated evidence.
The study of how people perceive, explain and judge others, including first impressions, stereotypes and guesses about motives.
See it on the Psychology map →What it says
Social cognition took shape in the 1970s, when social psychologists borrowed tools from the cognitive revolution; Susan Fiske and Shelley Taylor's 1984 textbook, Social Cognition, defined the field. Key findings: people form impressions of a face in about a tenth of a second; they explain others' actions by character more than circumstance; they sort people into categories and stereotypes automatically; and they justify their own choices. The field was also home to several flashy findings that later failed to replicate.
Why it matters
These judgments drive hiring, voting, lending, juries and everyday trust; knowing their systematic errors helps people correct for them.
The evidence
Core effects like snap judgments, attribution errors and stereotyping are well replicated. But social priming and power posing failed, and the 2015 Reproducibility Project replicated only about a quarter of social-psychology studies.
Open questions
How much implicit, unconscious bias predicts actual behavior is still hotly debated, as is why social findings replicate less often than cognitive ones.
Inside this (6)
Connections (8)
▸Reproducibility Project: under 40% replicated found weakest replication in Social cognition: how we judge peopleWell replicated
The connection
The 2015 Reproducibility Project re-ran 100 studies from leading journals. Social-psychology studies, many on social cognition topics such as priming and judgment, replicated only about 25 percent of the time, versus about 50 percent for cognitive studies, casting doubt on many celebrated findings about how we judge people.
Who showed it and when
Published in Science in August 2015 by the Open Science Collaboration, about 270 researchers led by Brian Nosek of the University of Virginia, re-testing studies published in 2008.
The evidence
Replications used original materials where possible and registered plans in advance; all data are public. Later multi-lab projects found similar patterns.
Open questions
Some argue social effects are more sensitive to time and place, so failures reflect changed contexts; others say many original studies were simply too small.
▸Fundamental attribution error is a core error in Social cognition: how we judge peopleWell replicated
The connection
The attribution error is the textbook example of a systematic flaw in how we read people: we see behavior and leap to conclusions about character, discounting pressures and constraints. Lee Ross called it 'fundamental' because so much social judgment rests on explaining others' actions.
Who showed it and when
Fritz Heider's 1958 attribution theory; Jones and Harris's 1967 essay study at Duke University; Lee Ross named it at Stanford in 1977.
The evidence
Replicated in many variations; Daniel Gilbert and Patrick Malone's 1995 review explained when it appears and why.
Open questions
Whether it is universal or culturally shaped, since East Asians correct for situations more readily, and whether 'error' is fair when traits do predict behavior.
▸Cognitive dissonance (Festinger) is a central theory of Social cognition: how we judge peopleMixed evidence
The connection
Dissonance theory was social psychology's dominant idea in the 1960s, explaining how people reconcile what they do with what they believe. It turned attention to how we interpret our own behavior and motives, a core question of social cognition, and spurred rival accounts like self-perception theory.
Who showed it and when
Leon Festinger's 1957 theory at Stanford; Elliot Aronson and others expanded it; Daryl Bem's 1967 self-perception theory challenged it.
How solid is it?
Hundreds of experiments and decades of textbooks attest to its influence, though some classic results replicate poorly.
Open questions
Whether dissonance is a distinct motive or one part of a broader need to see ourselves as consistent and good.
▸Implicit bias and the IAT became a leading, contested tool in Social cognition: how we judge peopleMixed evidence
The connection
Social cognition studies the fast judgments we make about people. Researchers once relied on what people said about their attitudes, which is easy to shade. The IAT promised to bypass that by timing responses, and it quickly became one of the field's most used tools. Critics argued it was adopted, including for training, faster than the evidence justified.
Who showed it and when
Anthony Greenwald at the University of Washington, Mahzarin Banaji at Yale and later Harvard, and Brian Nosek; critiques from Hart Blanton, Philip Tetlock and colleagues, 2009 and 2013.
How solid is it?
Thousands of published IAT studies. Meta-analyses disagree on its predictive power: a 2009 one found modest links to behavior, a 2013 reanalysis smaller ones, similar to plain questionnaires.
Open questions
Whether IAT scores reveal a person's attitudes or the surrounding culture's associations; one model treats them as a better measure of places than of individuals.
▸Stereotype threat is a proposed effect in Social cognition: how we judge peopleMixed evidence
The connection
Social cognition usually studies how we judge others; stereotype threat turned the lens inward, to how knowing others' stereotypes affects us. The proposed mechanism is worry and self-monitoring that use up working memory. It inspired school interventions, such as brief writing exercises on personal values, which early studies said narrowed achievement gaps.
Who showed it and when
Claude Steele at Stanford, 1990s; Toni Schmader and Michael Johns's 2003 working-memory study; Geoffrey Cohen's 2006 values-writing study in a northeastern US middle school.
How solid is it?
Many lab studies; but bias-corrected meta-analyses and large preregistered trials find smaller, less reliable effects, both for the threat and for the school interventions.
Open questions
Whether anxiety, effort or lowered expectations drive it, and whether successful interventions work through stereotype threat at all.
▸Social priming (the 'slow walking' study) was a famous claim in Social cognition: how we judge peopleWeak or failed to replicate
The connection
John Bargh's research on 'automaticity', the idea that concepts activated outside awareness steer behavior, was central to social cognition in the 1990s and 2000s. The slow-walking study was cited thousands of times, alongside claims that thinking about professors raised trivia scores and that images of money made people less helpful. Their failures forced a field-wide reckoning.
Who showed it and when
Bargh, Mark Chen and Lara Burrows at New York University, 1996; Ap Dijksterhuis's 1998 'professor' study in the Netherlands; failed replications from 2012 onward.
How solid is it?
Citation records and textbooks show its prominence. Larger repeats failed, including a 2013 series of professor-priming experiments by David Shanks's team in London.
Open questions
Whether Bargh's broader automaticity framework survives; automatic processes are real, but their power over complex behavior is now in doubt.
▸Social cognition: how we judge people depends on Theory of mind (the false-belief test)Well replicated
The connection
Judging people requires guessing what they think, want and believe, which is theory of mind. Children typically pass false-belief tests around age four, grasping that others can believe something untrue. Adult social judgment, from spotting lies to predicting a negotiator's next move, builds on this ability.
Who showed it and when
Heinz Wimmer and Josef Perner's 1983 false-belief test in Austria; the Sally–Anne test by Simon Baron-Cohen and colleagues in London, 1985.
The evidence
False-belief results replicate widely across cultures; brain imaging links thinking about others' minds to regions such as the temporoparietal junction.
Open questions
Whether infants understand false beliefs much earlier, as some looking-time studies suggest; several of those infant findings have failed to replicate.
▸Representativeness heuristic (judging by resemblance) drives stereotyped snap judgments in Social cognition: how we judge peopleWell replicated
The connection
When judging people, we often ask how well someone fits a mental prototype, like a typical engineer, and ignore how common that type actually is. That is representativeness applied to people, and it helps explain stereotyping, first impressions and hiring mistakes.
Who showed it and when
Kahneman and Tversky's 1973 'Tom W.' and engineer-lawyer studies used personality sketches; social psychologists such as Susan Fiske extended the idea to stereotyping in the 1980s.
The evidence
Experiments repeatedly show people neglect base rates when given vivid descriptions of individuals, with stereotypes serving as the prototypes.
Open questions
How much stereotyped judgments reflect representativeness versus learned associations or motives is debated, as is how easily training reduces them.