About the Authors
- Gijsbert Stoet
- Institute of Psychological Sciences, University of Leeds, Leeds, United Kingdom
- David C. Geary
- Department of Psychological Sciences, Interdisciplinary Neuroscience Program, University of Missouri, Columbia, Missouri, United States of America
The authors have declared that no competing interests exist.
Analyzed the data: GS DCG. Wrote the paper: GS DCG.