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VanLehn, K., Graesser, A. C., Jackson, G. T., Jordan, P., Olney, A., & Rose, C. P. (2005). When is reading just as effective as one-on-one interactive tutoring? In B. Bara, L. Barsalou, & M. Bucciarelli (Eds.), Proceedings of the 27th Annual Meetings of the Cognitive Science Society (pp. 2259–2264). Mahwah, NJ: Erlbaum.