Unfortunately, an error occurred in the Reference section of this article. The corrected references are given below.

Bereiter, C. & Scardamalia, M. (2000) Commentary on part I: Process and product in problem-based learning (PBL) research. In D. Evensen and C. Hmelo (Eds.), Problem-based learning: A research perspective. (pp. 185–195). Mahwah, NJ: Lawrence Erlbaum Associates.

Duek, J. (2000) Whose group is it, anyway? Equity of student discourse in problem-based learning (PBL). In D. Evensen and C. Hmelo (Eds.), Problem-based learning: A research perspective. (pp. 75–108). Mahwah, NJ: Lawrence Erlbaum Associates.

Faidley, J., Evensen, D., Salisbury-Glennon, J., Glenn, J., & Hmelo, C. (2000) How are we doing? Methods of assessing group processing in a problem-based learning context. In D. Evensen and C. Hmelo (Eds.), Problem-based learning: A research perspective. (pp. 109–136). Mahwah, NJ: Lawrence Erlbaum Associates.