About the Authors

Dongchuan Yu

dcyu@seu.edu.cn

Affiliations Key Laboratory of Child Development and Learning Science of Ministry of Education, Southeast University, Nanjing, Jiangsu, China, Research Center for Learning Science, Southeast University, Nanjing, Jiangsu, China

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

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