About the Authors

Emily Webber

Roles Conceptualization, Data curation, Methodology, Writing – review & editing

Affiliation Tacit London Ltd, Loughton, England, United Kingdom

Robin Dunbar

Roles Formal analysis, Writing – original draft

robin.dunbar@magd.ox.ac.uk

Affiliation Magdalen College, Oxford, England, United Kingdom

Competing Interests

Tacit London Ltd is a company wholly owned by Emily Webber. This does not alter our adherence to PLOS ONE policies on sharing data and materials.