About the Authors

Ellen Svarverud

Contributed equally to this work with: Ellen Svarverud, Andrew Glennerster

Affiliation Department of Optometry and Visual Science, Buskerud University College, Kongsberg, Norway

Stuart Gilson

Affiliations Department of Optometry and Visual Science, Buskerud University College, Kongsberg, Norway, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom

Andrew Glennerster

Contributed equally to this work with: Ellen Svarverud, Andrew Glennerster

a.glennerster@reading.ac.uk

Affiliation School of Psychology and Clinical Language Sciences, University of Reading, Earley Gate, Reading, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AG ES. Performed the experiments: ES. Analyzed the data: AG ES SJG. Contributed reagents/materials/analysis tools: SJG. Wrote the paper: AG ES.