"All are anticipating this summer's debut of Knewton, a new computerized-learning program that features immediate feedback and adaptation to students' learning curves. The concept can be traced back a half-century or so to a "teaching machine" invented by the psychologist B.F. Skinner, then a professor at Harvard University. Based on principles of learning he developed working with pigeons, Skinner came up with a boxlike mechanical device that fed questions to students, rewarding correct answers with fresh academic material; wrong answers simply got them a repeat of the old question. "The student quickly learns to be right," Skinner said."
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