1. National Institute of Technology, Fukui College, Fukui 916-8507, Japan
2. The Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, Fukui 910-8507, Japan
3. Graduate School of Clinical Education & The Center for the Study of Child Development, Institute for Education, Mukogawa Women’s University, Hyogo, Nishinomiya 663-8558, Japan