A model of conditional reasoning predicted that children under 12 would respond correctly to questions of uncertain logical form if premises and context enabled them to access counterexamples from memory, and that children's performance with uncertain logical forms would decrease when empirically true premises are presented in a fantasy context.…

After reviewsing the literature relative to culture and cognition, an hypothetical model was developed to explain some aspects of concept learning and cognitive development. To test aspects of the model, 3 tests which had had prior use in cross-cultural studies and 5 original tests were administered individually to 34 Stoney Indian and 34…

This document contains the second volume of the proceedings of the 29th Conference of the International Group for the Psychology of Mathematics Education. Conference papers are centered around the theme of "Learners and Learning Environments." This volume features 43 research reports by presenters with last names beginning between Adl…