ABSTRACT
Bolt, Beranek and Newman (BBN), a research and development firm in Cambridge, Massachusetts, has been arguably the most significant player in CBE research over the past three decades. As we shall see in this section, it was among the first sites of such research. But it has also been the context of many other firsts in CBE research. Most significant among these have been the seminal work of Jaime Carbonell, John Seely Brown and others in the application of artificial intelligence to tutoring systems (Brown and Burton, 1987; Fletcher and Rockaway, 1986), the influential work of Wallace Feurzeig, Seymour Papert and Dan Bobrow on the LOGO language and computer microworlds (Feurzeig, 1984; Papert, 1980), and the work of Allan Collins, Raymond Nickerson and others in research on thinking processes (OTA, 1988; Nickerson, Elkind and Carbonell, 1968).
