One-on-One Tutoring by Humans and Computers Martha Evens and Joel Michael (Illinois Institute of Technology and Rush Medical College), Lawrence Erlbaum Associates, 2006, xix+475 pp; hardbound, ISBN 0-8058-4360-4, $120.00; paperbound, ISBN 0-8058-4361-2, $45.00 - Pamela Jordan (Computational Linguistics)