Jerome Bruner was an influential American psychologist known for his work on education. He developed theories of cognitive development and learning that emphasized the active role of learners in constructing new ideas based on their existing knowledge. Bruner believed that instruction should be concerned with making students willing and able to learn, structuring information so it can be easily grasped, and facilitating students to go beyond the information given. He proposed that intellectual development progresses through enactive, iconic, and symbolic stages of representing knowledge. Bruner's work influenced constructivist learning theories and the concept of a "spiral curriculum."