In psychology and cognitive science, a schema (plural schemata or schemas) describes a pattern of thought or behavior that organizes categories of information and the relationships among them. It can also be described as a mental structure of preconceived ideas, a framework representing some aspect of the world, or a system of organizing and perceiving new information, such as a mental schema or conceptual model. Schemata influence attention and the absorption of new knowledge: people are more likely to notice things that fit into their schema, while re-interpreting contradictions to the schema as exceptions or distorting them to fit. Schemata have a tendency to remain unchanged, even in the face of contradictory information. Schemata can help in understanding the world and the rapidly changing environment. People can organize new perceptions into schemata quickly as most situations do not require complex thought when using schema, since automatic thought is all that is required. People use schemata to organize current knowledge and provide a framework for future understanding. Examples of schemata include mental models, social schemas, stereotypes, social roles, scripts, worldviews, heuristics, and archetypes. In Piaget's theory of development, children construct a series of schemata, based on the interactions they experience, to help them understand the world. History "Schema" comes from the Greek word schēmat or schēma, meaning "figure". Prior to its use in psychology, the term "schema" had primarily seen use in philosophy. For instance, "schemata" (especially "transcendental schemata") are crucial to the architectonic system devised by Immanuel Kant in his Critique of Pure Reason. Early developments of the idea in psychology emerged with the gestalt psychologists (founded originally by Max Wertheimer) and Jean Piaget. The term schéma was introduced by Piaget in 1923. In Piaget's later publications, action (operative or procedural) schémes were distinguished from figurative (representational) schémas, although together they may be considered a schematic duality. In subsequent discussions of Piaget in English, schema was often a mistranslation of Piaget's original French schéme. The distinction has been of particular importance in theories of embodied cognition and ecological psychology. This concept was first described in the works of British psychologist Frederic Bartlett, who drew on the term body schema used by neurologist Henry Head in 1932. In 1952, Jean Piaget, who was credited with the first cognitive development theory of schemas, popularized this ideology. By 1977, it was expanded into schema theory by educational psychologist Richard C. Anderson. Since then,