Refutation text offers mixed effects on Nigerian preservice teachers' use of the representativeness heuristic ; Proceedings of the forty-seventh annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education

This study enlisted a refutation text to foster conceptual change among 71 preservice teachers of mathematics education in situations that might elicit the use of the representativeness heuristic. Statistically significant differences were found between respondents pre- and post-tests, with more than half exhibiting normative reasoning after prior use of the heuristic. Analysis of their written explanations revealed differential patterns in their reasoning across two effect categories. Implications for misconception research and practice are discussed. ; Published version ; Yes, full paper (Peer reviewed?)