Academic Background: Ph.D., Educational Psychology, Cornell University, 1979; M.A., Psychology, Cornell University, 1976; B.A., Psychology, University of Rochester, 1973.
Research Interests: Mathematical cognition and early childhood education.
Appointments: Professor, Department of Curriculum and Instruction, University of Illinois Urbana-Champaign, 1990–present.
Publications: Author of Children’s Mathematical Thinking (Teachers College Press, 1987).