Marc Marschark was the first director of the Center for Research, Teaching, and Learning at the National Technical Institute for the Deaf at Rochester Institute of Technology, where he is now a professor in the Department of Research. He is also a member of the Department of Psychology at the University of Aberdeen, Scotland. He edits the Journal of Deaf Studies and Deaf Education and is the author of several books, including Raising and Educating a Deaf Child (Oxford, 1998), Psychological Development of Deaf Children (Oxford, 1997), and Relations of Language and Thought: The View from Sign Language and Deaf Children (Oxford, 1997).Harry G. Lang is a professor in the Department of Research at the National Technical Institute for the Deaf at Rochester Institute of Technology. Deaf himself, he is a leader in the field of science and mathematics education for deaf students. He has published several books on the contributions of deaf persons in the history of science and technology.John A. Albertini is Professor and Chair of the Department of Research at the National Technical Institute for the Deaf. He teaches English as a second language to undergraduate students who are deaf or hard of hearing and language development to future secondary school teachers of deaf students.