Pamela Jordan is a Research Associate at the Learning Research and Development Center at the University of Pittsburgh. Her most recent work in computational linguistics focuses on building and evaluating natural language dialogue systems for educational applications. She received an M.S. in Computational Linguistics from Carnegie Mellon University and a Ph.D. in Intelligent Systems from the University of Pittsburgh. Jordan's address is LRDC, University of Pittsburgh, 3939 O'Hara Street, Pittsburgh, PA 15260; e-mail: pjordan+@pitt.edu.