Difficulty: Introductory | Prerequisites: Chapter 1 notes (construal, self-fulfilling prophecy).
Chapter 3 moves from what social psychology is (Chapter 1) and how it is studied (Chapter 2) into how we actually think about the social world. Social cognition covers the mental shortcuts and frameworks, schemas, heuristics, priming, that shape what we notice, remember and conclude about other people. This chapter explains why two people can walk into the same room and come away with completely different impressions. If you understood construal from Chapter 1, this chapter shows you the machinery behind it.
People process social information through two systems: fast, effortless automatic thinking (schemas, heuristics, priming) and slower, deliberate controlled thinking. Schemas help us organise and interpret the world but can also lead us astray, especially when we rely on mental shortcuts like the availability and representativeness heuristics. Culture shapes which thinking style (analytic vs. holistic) we default to.
Social cognition
The way in which people think about themselves and the social world, including how they select, interpret, remember and use social information. Think of it as the study of the mental toolkit we use to navigate social life.
Automatic thinking
Thought that is nonconscious, unintentional, involuntary and effortless. In simple terms, the thinking you do without realising you are doing it.
Controlled thinking
Thought that is conscious, intentional, voluntary and effortful. This is the slow, deliberate reasoning you engage in when you have the motivation and resources.
Schema
A mental structure that organises our knowledge about the social world. Schemas grow stronger and more resistant to change over time. Think of them as mental filing cabinets that shape what you notice and remember.
Accessibility
The extent to which schemas and concepts are at the forefront of the mind and therefore likely to be used when making judgements. A schema can be accessible because of past experience, current goals or recent experiences.
Priming
The process by which recent experience increases the accessibility of a schema, trait or concept. In simple terms, if you have just been exposed to something, it is more likely to colour your next judgement.
Judgmental heuristics
Mental shortcuts people use to make judgements quickly and efficiently. They are applied when we do not have a readily available schema or when too many schemas compete.
Availability heuristic
Basing a judgement on the ease with which you can bring something to mind. What comes to mind most easily is not always the most typical or representative, which can produce faulty conclusions.
Representativeness heuristic
A mental shortcut we use to classify something according to how similar it is to a typical case. This often leads us to ignore base-rate information (the actual frequency of different categories in the population).
Base-rate information
Information about the relative frequency of members of different categories in a population. People tend to ignore it when using the representativeness heuristic.
Counterfactual thinking
Mentally changing some aspect of the past as a way of imagining what might have been. The easier it is to mentally undo an outcome, the stronger the emotional reaction to it.
Rumination
Repetitively focusing on negative things in one's life. It prolongs negative mood and can impair problem-solving.
Analytic thinking style
A type of thinking in which people focus on the properties of objects without considering their surrounding context. More common in Western cultures.
Holistic thinking style
A type of thinking in which people focus on the overall context, particularly the ways in which objects relate to each other. More common in East Asian cultures.
Automatic thinking is fast, effortless and happens outside conscious awareness. Controlled thinking is slow, effortful and deliberate. Most of our day-to-day social processing is automatic.
Schemas are mental structures that organise what we know about the social world. They serve several functions:
Organise existing knowledge.
Help us interpret new situations.
Fill in the gaps when information is ambiguous or incomplete.
Influence what we notice, think about and remember.
Schemas become stronger and more change-resistant with use. People are less likely to rely on schemas when they have sufficient motivation to process information about an individual more carefully, for example:
When they are held accountable for their decisions.
When they have outcome dependency on the person they are interacting with (their own outcomes depend on that person).
Accessibility determines which schema is activated in a given moment. A schema can be accessible for three reasons:
Past experience: Schemas used frequently become chronically accessible.
Current goals: Schemas related to what you are trying to achieve right now are more likely to be activated.
Recent experiences (priming): A schema, trait or concept you encountered recently is temporarily more accessible.
Priming occurs when exposure to one stimulus influences how you process the next. For example, reading hostile words can prime you to interpret an ambiguous person's behaviour as aggressive. The American flag study found that exposure to the flag shifted attitudes toward republicanism, demonstrating how subtle environmental cues prime schemas.
When no schema is readily available, or when too many schemas compete, people fall back on heuristics, quick mental shortcuts for making judgements.
Availability heuristic
We judge the likelihood of something by how easily examples come to mind. The problem: ease of recall does not always match actual frequency.
Key study: Participants asked to recall 6 examples of their own assertive behaviour rated themselves as more assertive than those asked to recall 12. Recalling 12 was harder, which made them feel less assertive, even though they had generated more evidence.
Representativeness heuristic
We classify things by how much they resemble a typical case, often ignoring base-rate information (the statistical frequency of different categories).
Example: Given a description of a quiet, orderly person, people judge "librarian" as more likely than "salesperson," even when salespeople vastly outnumber librarians in the population.
People approach new situations using either schemas or judgmental heuristics. Schemas are tried first; heuristics kick in when schemas are unavailable or when too many schemas compete.
The content of our schemas is shaped by culture.
Analytic thinking style (more common in Western cultures): Focuses on properties of objects independent of context.
Holistic thinking style (more common in East Asian cultures): Focuses on the overall context and relationships between objects.
Counterfactual thinking is mentally changing some aspect of the past to imagine what might have been. The easier it is to mentally undo an outcome, the stronger the emotional reaction. Missing a flight by 5 minutes feels worse than missing it by 2 hours because the near-miss is easier to mentally reverse.
Rumination is the repetitive focus on negative events. It prolongs distress and impairs the ability to act constructively.
American flag priming study: Exposure to the flag shifted attitudes toward republicanism.
Radio programme to reduce violence and promote reconciliation: Demonstrated that media-based priming can shift attitudes and behaviour at scale.
Availability heuristic study (6 vs. 12 assertive behaviours): Illustrated how ease of retrieval shapes self-judgement.
Students often think schemas are always bad because they can bias us. Schemas are essential and mostly helpful; they let us process complex information quickly. They become problematic only when they are inaccurate or applied to the wrong situation.
A common mistake is treating the availability heuristic and the representativeness heuristic as interchangeable. Availability is about ease of recall; representativeness is about similarity to a prototype. They are different shortcuts triggered by different conditions.
Students sometimes think "base-rate information" is obscure jargon. It simply means the actual statistical frequency of something in the population, and it is the thing the representativeness heuristic causes us to overlook.
Students frequently assume that controlled thinking is always better than automatic thinking. Controlled thinking is more accurate when resources are available, but automatic thinking is adaptive for the vast majority of everyday decisions.
⚠️ Know the difference between automatic and controlled thinking and be able to give examples of each.
⚠️ Be able to define schemas and explain when people rely on them versus when they process information more carefully (accountability, outcome dependency).
⚠️ Understand the three sources of accessibility (past experience, current goals, recent experience/priming).
⚠️ Distinguish the availability heuristic from the representativeness heuristic. Expect a scenario question asking you to identify which heuristic is at work.
⚠️ Know what base-rate information is and why the representativeness heuristic causes people to ignore it.
⚠️ Be prepared to explain counterfactual thinking and why near-misses produce stronger emotions.
⚠️ Know the 6 vs. 12 assertive behaviours study and be able to explain what it demonstrates about the availability heuristic.
True or false: Automatic thinking requires conscious effort. (False. Automatic thinking is nonconscious, unintentional and effortless.)
Fill in the blank: Mental structures that organise our knowledge about the social world are called __________. (Schemas.)
True or false: The representativeness heuristic involves judging likelihood based on how easily something comes to mind. (False. That is the availability heuristic. The representativeness heuristic involves judging by similarity to a prototype.)
Fill in the blank: __________ is the process by which recent experience increases the accessibility of a schema, trait or concept. (Priming.)
True or false: People are more likely to rely on schemas when they are held accountable for their decisions. (False. Accountability motivates more careful, individuated processing.)
Q: What is the difference between the availability heuristic and the representativeness heuristic?
A: The availability heuristic involves judging how likely something is based on how easily examples come to mind. The representativeness heuristic involves judging how likely something is based on how closely it resembles a typical case. The availability heuristic is about recall ease; the representativeness heuristic is about similarity to a prototype.
Q: A student watches a news report about a plane crash and then refuses to fly, even though driving is statistically more dangerous. Which heuristic is at work, and why?
A: The availability heuristic. The vivid, recent news coverage makes plane crashes easy to recall, inflating the student's perception of their likelihood. The actual base rate of plane crashes is extremely low relative to car accidents.
Q: Explain why participants in the 6 vs. 12 assertiveness study rated themselves differently despite the 12-example group generating more evidence of assertiveness.
A: The availability heuristic causes people to judge based on how easy it was to generate the examples, not how many they produced. Recalling 6 examples felt easy, so participants concluded they must be assertive. Recalling 12 felt difficult, so participants inferred they must not be very assertive, even though they had more supporting evidence.
Q: Under what conditions are people less likely to rely on schemas?
A: When they have sufficient motivation to process information more carefully, for instance when they are held accountable for their decisions or when their own outcomes depend on the person they are evaluating (outcome dependency).
Q: What is counterfactual thinking, and how does it relate to emotional intensity?
A: Counterfactual thinking is mentally altering some aspect of the past to imagine what might have been. The easier it is to mentally undo an outcome, the stronger the emotional reaction. Near-misses produce more intense emotions than outcomes that feel far from an alternative.
Schemas are the engine behind construal (Chapter 1): they determine how we interpret a situation, which is why the same objective event produces different reactions in different people. The heuristics covered here also feed into attribution errors in Chapter 4, where quick, schema-driven judgements about other people's behaviour produce systematic biases. Priming connects to self-fulfilling prophecy from Chapter 1: both involve expectations shaping outcomes. Rumination links forward to self-concept and self-esteem in Chapter 5, where repetitive negative self-focus can erode well-being.
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