Difficulty: Intermediate | Prerequisites: Introduction to Social Psychology and Research Methods notes
Social cognition is about how people think about the social world: how they form impressions, make judgements and reach decisions. This section covers the mental shortcuts (heuristics) that speed up thinking but introduce systematic errors, the way information is presented (framing) and how schemas filter what we attend to, remember and do. Several topics flagged here are not in the textbook but are examinable.
People rely heavily on mental shortcuts and prior expectations when processing social information. The order, framing and context in which information is presented can dramatically change judgements. Schemas guide attention, memory and behaviour, sometimes helpfully, sometimes in ways that create self-fulfilling prophecies and confirmation biases.
Thin slices
Brief excerpts of behaviour (seconds to minutes) from which people form surprisingly accurate impressions. In simple terms, you can often tell a lot about someone from a very short interaction or even a photograph.
Baby-facedness
The tendency for people with baby-like facial features (large eyes, round face, small nose) to be perceived as more trustworthy, naive and submissive. Think of it as a cognitive shortcut: features associated with infants trigger warmth and trust, even in adults.
Pluralistic ignorance
A situation in which the majority of group members privately reject a norm or belief but assume (incorrectly) that most others accept it. In simple terms, everyone goes along because they think everyone else agrees, when in fact nobody does.
Self-fulfilling prophecy
A belief or expectation that causes a person to act in ways that make the belief come true. Think of it as: a teacher who expects a student to fail may give them less attention, leading the student to perform poorly, confirming the teacher's original expectation.
Primacy effect
The tendency for earlier information to carry more weight in forming an impression than later information. In simple terms, first impressions stick.
Recency effect
The tendency for the most recently presented information to be better remembered or more influential. Think of it as the opposite of primacy: in some conditions, the last thing you hear is what sticks.
Anchoring
The tendency to rely too heavily on the first piece of information encountered (the "anchor") when making subsequent judgements. In simple terms, if someone asks "Is the population of Turkey more or less than 100 million?" and then asks you to guess, your guess will be pulled toward 100 million regardless of what you know.
Spin framing
Presenting information in a way that emphasises certain aspects to influence interpretation. Think of it as the difference between "95% fat-free" and "contains 5% fat." Same fact, very different impression.
Gains vs. losses framing
People respond differently to the same information depending on whether it is framed as a potential gain or a potential loss. Losses tend to weigh more heavily (loss aversion). In simple terms, losing 20 pounds feels worse than gaining 20 pounds feels good.
Construal level theory (CLT)
The theory that psychological distance (temporal, spatial, social, hypothetical) affects whether events are represented abstractly (high-level construal) or concretely (low-level construal). Think of it as: a holiday next year is "relaxation and adventure" (abstract), but the same holiday tomorrow is "packing, airport security, a 6am flight" (concrete).
Planning fallacy
The tendency to underestimate the time, costs and risks of future actions while overestimating their benefits. In simple terms, it is why every home renovation takes twice as long and costs twice as much as expected.
Action identification (Not in textbook, examinable)
The level at which a person describes an action: high-level (why they are doing it, its meaning) vs. low-level (how they are doing it, its mechanics). Think of it as the difference between "I am building my career" (high-level) and "I am typing on a keyboard" (low-level).
Delay discounting (Not in textbook, examinable)
The tendency to prefer smaller, immediate rewards over larger, delayed rewards. In simple terms, most people would rather have 50 pounds now than 100 pounds in a year.
Confirmation bias
The tendency to search for, interpret and remember information in ways that confirm pre-existing beliefs. Think of it as seeing what you already expect to see.
Motivated confirmation bias
Confirmation bias driven by a desire for a particular outcome, where the search for confirming evidence is intensified by personal stakes or preferences. In simple terms, wanting something to be true makes you even more likely to see evidence that it is.
Top-down processing
Perception and interpretation guided by prior knowledge, expectations and schemas. Think of it as your brain filling in the blanks based on what it already knows.
Bottom-up processing
Perception driven by incoming sensory data, without the influence of prior expectations. In simple terms, letting the raw data speak for itself.
Affect heuristic (Not in the book, examinable)
A mental shortcut in which current emotions influence judgements and decisions. Think of it as: if something feels good, you judge it as less risky and more beneficial, regardless of the evidence.
Availability heuristic
Judging the likelihood of an event based on how easily examples come to mind. In simple terms, if you can quickly think of plane crashes (because they make the news), you overestimate how common they are.
Representativeness heuristic
Judging the likelihood that something belongs to a category based on how similar it is to a typical member of that category, while ignoring base rates. Think of it as: a quiet, bookish person "seems like" a librarian more than a salesperson, even if there are far more salespeople in the population.
People form impressions within seconds, and these snap judgements can be surprisingly predictive
Baby-facedness is one cue that biases impressions: adults with baby-like features are judged as warmer but less competent
These effects illustrate how top-down processing (schema-driven expectations) shapes perception from the outset
In classrooms, nobody asks a question because everyone assumes everyone else understands the material. In reality, most people are confused
Pluralistic ignorance also contributes to the bystander effect: each witness looks to others for cues and, seeing no reaction, concludes there is no emergency
Rosenthal and Jacobson's "Pygmalion in the Classroom" study: teachers told that certain students were "late bloomers" (chosen at random) gave those students more attention and encouragement. Those students then showed greater IQ gains
The mechanism: expectations change behaviour (the teacher's), which changes outcomes (the student's performance), which confirms the original expectation
Implications for academic performance: stereotypes and expectations from teachers or peers can create self-fulfilling cycles, for better or worse
Order effects
Primacy effect: information presented first has a disproportionate influence on the final impression
Recency effect: information presented last is sometimes more influential, especially when there is a delay between the two blocks of information or when memory for earlier material has faded
Question order in surveys matters: earlier questions can frame how respondents interpret and answer later ones
Anchoring
An initial value (even an arbitrary one) pulls subsequent estimates toward it
Example: asking people to guess a quantity after exposing them to a random high number will produce higher estimates than if they had seen a random low number
Spin framing and gains vs. losses
The same factual information can be described in ways that highlight gains (positive frame) or losses (negative frame)
Loss aversion means people are more motivated to avoid a loss than to obtain an equivalent gain
Example: a medical treatment described as having a "90% survival rate" is perceived more favourably than one described as having a "10% mortality rate," even though the two statements are identical
Construal level theory
Distant events are construed abstractly (high-level: goals, values, meaning)
Near events are construed concretely (low-level: logistics, details, steps)
This affects decision-making: people may commit to something far off because it sounds meaningful, then dread it as it approaches and the concrete details become salient
The planning fallacy
People chronically underestimate the time needed to complete tasks
They focus on the specific task (unique features) and neglect base-rate information (how long similar tasks have taken in the past)
Action identification (not in textbook, examinable)
The same action can be described at different levels: low-level ("moving a pen across paper") or high-level ("writing a novel")
The level at which you identify an action affects motivation and perception
Past vs. future comparison and ideology (not in textbook, examinable)
People's temporal comparisons (whether the past or future looks better) can be influenced by political ideology and personal outlook
Delay discounting (not in textbook, examinable)
The subjective value of a reward decreases as the delay to receiving it increases
This explains impulsive choices and difficulty saving for the future
Schemas affect four key processes:
Attention: Schemas direct what you notice. You are more likely to spot schema-consistent information
Memory: Schema-consistent information is easier to recall. Schema-inconsistent information can also be memorable if it is surprising enough
Construal: Schemas shape how ambiguous information is interpreted
Behaviour: Schemas can produce self-fulfilling prophecies when they guide how you act toward others
Confirmation bias: you seek out and weight information that supports what you already believe
Motivated confirmation bias intensifies this when the belief serves your interests or desires
Both biases operate largely automatically and are difficult to override
Affect heuristic (not in the book, examinable)
Your current emotional state colours your judgements: things feel less risky and more rewarding when you are in a good mood
Availability heuristic
Events that come easily to mind (because they are vivid, recent or emotionally charged) are judged as more common than they are
This is why people overestimate the frequency of dramatic events (plane crashes, shark attacks) relative to mundane but more common risks (car accidents)
Representativeness heuristic
Judgements about category membership are based on resemblance to a prototype, ignoring base rates
The classic example: "Steve is shy and organised" leads people to guess "librarian" over "farmer," despite farmers vastly outnumbering librarians
Anchoring is exploited in pricing (a high "original price" makes the sale price look like a bargain). Gains-vs-losses framing is used in public health campaigns ("you will lose X years of life" is more persuasive than "you will gain X years"). The planning fallacy is why project managers use reference-class forecasting: comparing to similar past projects rather than trusting their own optimistic estimates.
"Heuristics always lead to errors." Heuristics are efficient and usually produce reasonable judgements. The problem is that they produce systematic biases in predictable situations, not that they are universally flawed.
"Confirmation bias is deliberate." Most confirmation bias operates automatically. People are not consciously choosing to ignore disconfirming evidence; their attention and memory are simply skewed.
"The primacy effect always wins over the recency effect." Which one dominates depends on context, particularly the timing of information and whether there is a delay between blocks of information and the judgement.
"Framing effects mean people are irrational." Framing effects show that judgement is context-sensitive, not that people are incapable of reasoning. When alerted to framing, people can sometimes correct for it.
Be able to identify which heuristic (affect, availability, representativeness) is operating in a given scenario
Know the self-fulfilling prophecy mechanism and its implications for education (the Pygmalion study)
Understand the difference between primacy and recency effects and when each dominates
Be prepared for questions on construal level theory, the planning fallacy and delay discounting, all of which may be tested even though some are not in the textbook
Know how schemas influence attention, memory, construal and behaviour
The affect heuristic is not in the book but is examinable
True or false: The availability heuristic leads people to judge events as more likely if examples come easily to mind. (True.)
Fill in the blank: The tendency to underestimate the time needed to complete a task is called the ____. (Planning fallacy.)
True or false: Anchoring effects disappear when the anchor is obviously arbitrary. (False: anchoring effects persist even with arbitrary anchors.)
Fill in the blank: When everyone in a group privately disagrees with a norm but assumes everyone else supports it, this is called ____. (Pluralistic ignorance.)
True or false: Top-down processing is driven by incoming sensory data without the influence of prior knowledge. (False: that describes bottom-up processing. Top-down processing is guided by prior knowledge and expectations.)
Q: A doctor tells one group of patients that a procedure has a "90% survival rate" and another group that it has a "10% mortality rate." The first group is more willing to undergo the procedure. What concept explains this?
A: Gains vs. losses framing. The same statistical information is presented in a positive frame (survival) vs. a negative frame (mortality). Loss aversion makes the mortality frame feel more threatening, reducing willingness.
Q: A hiring manager reads a glowing recommendation for a candidate before the interview and then perceives the interview more favourably than she otherwise might have. Which concepts are at play?
A: The primacy effect (the positive recommendation sets the tone), confirmation bias (the manager looks for evidence consistent with the positive impression) and schemas (the recommendation activates a "strong candidate" schema that filters interpretation of the interview).
Q: Explain how a self-fulfilling prophecy works in an educational setting.
A: A teacher forms an expectation about a student (e.g., "this student is gifted"). The teacher then behaves differently toward that student: more encouragement, more challenging tasks, more patience. The student responds to this treatment by performing better, which confirms the teacher's original expectation. The key point is that the expectation itself, not any real initial difference, drove the outcome.
Q: You are planning a group project and estimate it will take two weeks. Based on the planning fallacy, what is likely to happen and why?
A: The project will likely take longer than two weeks. The planning fallacy occurs because people focus on the unique details of the current project (optimistic scenario planning) rather than consulting base-rate information about how long similar projects have taken in the past.
Schemas connect back to the Introduction (where stereotypes were introduced as a type of schema) and forward to Social Attribution (where schemas about people shape causal explanations). The self-fulfilling prophecy links to the Social Self (expectations about oneself) and Social Attribution (how expectations about others' abilities drive biased attributions). Heuristics connect to Research Methods (understanding why everyday reasoning is unreliable and why systematic methods are needed).
social cognition, thin slices, first impressions, baby-facedness, baby face bias, pluralistic ignorance, self-fulfilling prophecy, Pygmalion effect, Rosenthal and Jacobson, primacy effect, recency effect, order effects, question order, anchoring, anchor bias, framing, spin framing, gains vs losses, loss aversion, temporal framing, construal level theory, CLT, psychological distance, planning fallacy, action identification, delay discounting, temporal discounting, confirmation bias, motivated reasoning, top-down processing, bottom-up processing, schema, schema-driven processing, affect heuristic, availability heuristic, representativeness heuristic, base rate neglect, implicit theories, fixed mindset, growth mindset