Lance Rips

Research

Rips's research has ranged from studies of human concepts to reasoning and to autobiographical memory and survey methods. Along with Edward Smith, Edward Shoben, and Eleanor Rosch, he helped establish the role of prototypes in people's knowledge of natural categories. His experiments on prototypes in inductive reasoning started a stream of research on category-based inductive reasoning. Later work focused on deductive reasoning, developing a computational theory along the lines of natural deduction in logic. More recent work includes studies of number systems, concepts of individual objects, and explanation.