1. Bencze, L., & Hodson, D. (1998). Coping with uncertainty in elementary school science : A case study in collaborative action research. Teachers and Teaching, 4, 77-94.
2. Berkowitz, M. W., & Gibbs, J. C. (1983). Measuring the developmental features of moral discussion. Merrill-Palmer Quarterly, 29, 399-410.
3. Berkowitz, M. W., & Simmons, P. (2003). Integrating science education and character education : The role of peer discussion. In D. L. Zeidler (Ed.), The role of moral reasoning on socioscientific issues and discourse in science education (pp. 117-138). Dordrecht, Netherlands : Kluwer Academic Publishers.
4. Cohen, J. A. (1960). A coefficient of agreement for nominal scales. Educational and Psychological Measurement, 20, 37-46.
5. Herrenkohl, L. R., & Guerra, M. R. (1998). Participant structures, scientific discourse, and student engagement in fourth grade. Cognition and Instruction, 16, 431-473.