About the Authors

Matthew Inglis

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

Affiliation Centre for Mathematical Cognition, Loughborough University, Loughborough, United Kingdom

Steven O’Hagan

Roles Data curation, Methodology, Writing – review & editing

s.ohagan@ed.ac.uk

Affiliation School of Mathematics, University of Edinburgh, Edinburgh, United Kingdom

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: At the time the study was conducted, Steven O’Hagan was employed as the Deputy Director of the UK Mathematics Trust. This does not alter our adherence to PLOS ONE policies on sharing data and materials.