Funding for this research was provided by:
This research was supported by 2016 Comprehensive Discipline Construction Fund of Faculty of Education, Beijing Normal University
Article History
First Online: 16 February 2018
Compliance with Ethical Standards
:
: All authors involved in this study do not have any interests that might be interpreted as influencing the research.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all participants (teachers, children and their parents) included in the study.