Jerome Seymour Bruner is an American psychologist who has contributed to cognitive psychology and cognitive learning theory in educational psychology and to the general philosophy of education. Bruner is currently a senior research fellow at the New York University School of Law. Bruner's ideas are based on categorization. "To perceive is to categorize, to conceptualize is to categorize, to learn is to form categories, to make decisions is to categorize." Bruner maintains people interpret the world in terms of its similarities and differences. Like Bloom's Taxonomy, Bruner suggests a system of coding in which people form a hierarchical arrangement of related categories. Each successively higher level of categories becomes more specific, echoing Benjamin Bloom's understanding of knowledge acquisition as well as the related idea of instructional scaffolding.