Abstract. We built three different versions of an ITS on a letter pattern extrapolation task: in one version, students only receive color-coded feedback; in the second, they receive verbal feedback messages when they perform correct actions, and in the third, when they make a mistake. We found that time on task and number of errors are predictive of performance on the post-test rather than the type of feedback. Keywords. Intelligent Tutoring Systems. Natural Language feedback.
Barbara Di Eugenio, Xin Lu, Trina C. Kershaw, Andr