--- title: "Second-Order Belief | Cognitive Psychology" description: "Second-order belief is understanding what one person believes about another person’s belief, a core Cognitive Psychology step in Theory of Mind and social reasoning." canonical: "https://fiveable.me/cognitive-psychology/key-terms/second-order-belief" type: "key-term" subject: "Cognitive Psychology" unit: "Unit 12" --- # Second-Order Belief | Cognitive Psychology ## Definition Second-order belief is when you understand what one person thinks about another person’s belief. In Cognitive Psychology, it marks a more advanced Theory of Mind skill than simple false-belief reasoning. ## What It Is Second-order belief is a Cognitive Psychology term for thinking about what one person believes about another person's belief. It is not just "what does Sam believe?" It is "what does Mia think Sam believes?" That extra mental layer is what makes it second-order. This builds on first-order belief, where you track one person's belief about the world. For example, if Sam thinks the toy is in the box, that is first-order belief. If Mia knows that Sam thinks Lee believes the toy is in the box, Mia is holding a second-order belief because she is representing someone else's belief about someone else's belief. In the course, second-order belief sits inside Theory of Mind and social cognition. It shows that the mind can represent nested mental states, not just visible actions. That is a big jump because social life is full of hidden perspectives, mistaken assumptions, and private knowledge that other people do not share. This skill usually becomes more reliable around ages 6 to 7. Before that, children may understand that people can be wrong, but they often struggle when the task asks them to track two levels of belief at once. That is why second-order belief is often discussed as a later milestone in social-cognitive development. You can see it in tasks where a character thinks another character was told something, overheard something, or got tricked. The child has to keep track of who knows what, who heard what, and what each person thinks the other person knows. That mental bookkeeping is the whole point of the concept. ## Why It Matters Second-order belief matters because it explains how people manage more advanced social situations in Cognitive Psychology. Once you can represent one person's belief about another person's belief, you can better follow deception, sarcasm, secrets, and misunderstandings. It also gives you a sharper way to interpret children's social development. A child may pass a simple false-belief task and still miss second-order belief because the task asks for a deeper mental model. That difference matters in class discussions about how Theory of Mind develops step by step rather than all at once. The term also connects to everyday communication. If someone says, "She thinks he knows," you are using second-order belief without even noticing it. That same mental process shows up in reading fiction, analyzing dialogue, and explaining why a character misreads another character's intentions. In Cognitive Psychology, second-order belief is a clean example of how mental representation can stack. You are not just reacting to behavior, you are building a model of what one mind thinks about another mind. That is one reason it shows up in lessons on social cognition, empathy, and perspective-taking. ## Connections ### Theory of Mind Second-order belief is a more advanced part of Theory of Mind. Theory of Mind is the broader ability to understand mental states like beliefs, desires, and intentions, while second-order belief asks you to nest those mental states inside one another. If Theory of Mind is the skill, second-order belief is one of the harder moves that skill makes possible. ### first-order belief First-order belief is the simpler step that comes before second-order belief. It focuses on one person's belief about reality, such as where an object is or what happened in a scene. Second-order belief adds another layer, because now you are tracking what one person thinks another person believes. ### [False Belief Understanding](/cognitive-psychology/key-terms/false-belief-understanding) False Belief Understanding is closely related because both concepts deal with mental states that do not match reality. The difference is that false-belief tasks often ask what one person believes, while second-order belief tasks ask what one person believes about another person's belief. That makes the second-order version more demanding. ### social cognition Second-order belief is part of social cognition because it deals with how you interpret other people's minds in real social settings. Social cognition covers perception, inference, and prediction about others' behavior. Second-order belief adds the extra step of understanding how someone else is modeling a third person's mind. ## On the AP Exam A quiz item or short answer usually asks you to identify the level of belief in a scenario. Your job is to trace who knows what, who thinks what, and which mind is representing another mind. If the prompt says one character believes that another character thinks something, that is second-order belief. In a passage analysis or class discussion, you might explain why a child or character misses the social cue because they only handled first-order belief. In a developmental question, you may also connect the term to age and Theory of Mind, showing that the child can handle nested perspectives only after simpler false-belief reasoning is in place. ## second-order belief vs first-order belief First-order belief is about one person's belief about the world, like "Tom thinks the key is in the drawer." Second-order belief adds another person, like "Anna thinks Tom believes the key is in the drawer." If there is only one belief layer, it is first-order, not second-order. ## Key Takeaways - Second-order belief means thinking about what one person believes about another person's belief. - It is a higher-level Theory of Mind skill because it requires nested mental states, not just one person's viewpoint. - Children usually start showing stronger second-order belief around ages 6 to 7, after simpler false-belief reasoning develops. - You see this skill in deception, sarcasm, misunderstandings, and stories where characters have different information. - If a scenario includes one belief inside another belief, you are probably dealing with second-order belief. ## FAQs ### What is second-order belief in Cognitive Psychology? Second-order belief is the ability to understand what one person believes about another person's belief. In Cognitive Psychology, it is a sign of more advanced Theory of Mind because you are tracking nested perspectives, not just one person's direct belief about reality. ### How is second-order belief different from first-order belief? First-order belief is just one person's belief about the world, like where something is or what happened. Second-order belief adds another layer, where you think about what one person believes another person thinks. That extra layer makes the task much more demanding. ### Can you give an example of second-order belief? If Maya thinks Leo believes the teacher moved the assignment to Friday, that is second-order belief. You are not only tracking Maya's belief, you are also tracking Maya's belief about Leo's belief. These nested beliefs show up often in stories and social misunderstandings. ### Why do children struggle with second-order belief tasks? They can be hard because children have to keep track of more than one mind at a time. A child may understand that someone can be wrong, but still lose track when the question asks what one character thinks another character believes. That is why second-order belief is usually developed later than simple false-belief understanding. ## Related Study Guides - [12.3 Theory of Mind and Social Cognition Development](/cognitive-psychology/unit-12/theory-mind-social-cognition-development/study-guide/8dmncMO1WXMvsZAQ) ## About This Document Canonical Fiveable pages are available as Markdown at the same path plus `.md`. - [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns - [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing - [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`) - [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`) ## Structured Data ```json {"@context":"https://schema.org","@graph":[{"@type":"LearningResource","@id":"https://fiveable.me/cognitive-psychology/key-terms/second-order-belief#resource","name":"Second-Order Belief | Cognitive Psychology","url":"https://fiveable.me/cognitive-psychology/key-terms/second-order-belief","learningResourceType":"Concept explainer","educationalLevel":"AP® / High School","about":{"@id":"https://fiveable.me/cognitive-psychology/key-terms/second-order-belief#term"},"audience":{"@type":"EducationalAudience","educationalRole":"student"},"dateModified":"2026-07-03T02:21:13.816Z","isPartOf":{"@type":"Collection","name":"Cognitive Psychology Key Terms","url":"https://fiveable.me/cognitive-psychology/key-terms"},"author":{"@type":"Organization","@id":"https://fiveable.me/editorial#content-team","name":"Fiveable Content Team","url":"https://fiveable.me/editorial","parentOrganization":{"@id":"https://fiveable.me/#organization"},"member":[{"@type":"Person","name":"Amanda DoAmaral","sameAs":["https://www.linkedin.com/in/adoamaral"]},{"@type":"Person","name":"Becky Bahr","sameAs":["https://www.linkedin.com/in/becky-bahr-b52743132"]}]},"publisher":{"@type":"Organization","name":"Fiveable","url":"https://fiveable.me"}},{"@type":"DefinedTerm","@id":"https://fiveable.me/cognitive-psychology/key-terms/second-order-belief#term","name":"second-order belief","description":"Second-order belief is when you understand what one person thinks about another person’s belief. 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