About the Authors

Jiansheng Li

Affiliation Department of Psychology, Northwest Normal University, Lanzhou, P. R. China

Yawen Zhu

zhu_yawen@126.com

Affiliation Department of Psychology, Northwest Normal University, Lanzhou, P. R. China

Yang Yang

Affiliation Department of Psychology, Northwest Normal University, Lanzhou, P. R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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