This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License, CC BY 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.This special issue represents an attempt to build bridges between research in mathematics education and psychology. Although the disciplines differ in the way they frame specific research questions, these two fields concern themselves with many of the same problems, especially problems related to mathematical learning.Too often, however, their respective communities talk past one another, not knowing how to integrate work from the other field. In a commentary published in this journal, Dan Berch (2016) voiced skepticism about whether it was even possible to do so. He cited divergent methodologies, theoretical frameworks, and epistemologies as insurmountable obstacles. Here, we present articles that provide reason for optimism while elucidating key challenges for each field.The articles presented in this issue contribute to our understanding of mathematical development in the domain of numerical cognition while integrating perspectives to various degrees. Some of the articles represent literature primarily from the authors' own discipline to call for future research and application in the other field.Other articles examine interdisciplinary research relationships themselves. In "Bridging psychology and mathematics education," Martha Alibali and Eric Knuth report on a particularly productive collaboration, which has generated several research publications and numerous insights into ways that students conceptualize mathematical equations. Additional articles-one led by educational psychologist Helena Osana and another led by mathematics educator Xenia Vamvakoussi-directly address Berch's concerns and the obstacles he identified in relation to interdisciplinary collaborations.In this editorial we elaborate on two epistemological obstacles to bridge building: differing perspectives on the nature of mathematics, and differing perspectives on research (which lead to different methodological choices).We draw upon findings from papers presented in this special issue to identify potentially productive ways to navigate these obstacles. We close with suggestions for future collaborations.
Journal of Numerical Cognition jnc.psychopen.eu | 2363-8761Theoretical Frameworks and Epistemology:
Problematizing MathematicsAs noted by Berch (2016) and others (e.g., Bruer, 1997), divergent frameworks and epistemologies exacerbate the challenges of interdisciplinary research. After all, theoretical frameworks frame even the way we pose questions. Here we address the challenge inherent in divergent views of mathematics itself. Davis and Hersh (1981) stated that Platonism prevails as the default epistemology of mathematics. The apparent certainty of mathematics renders it true in the minds of most people, separate from culture and cognition, s...