1. Japan Society for the Promotion of Science (JSPS) Tokyo Japan
2. College of Education Ibaraki University Ibaraki Japan
3. Division of Information System Design Tokyo Denki University Saitama Japan
4. Centre for Brain and Cognitive Development, Birkbeck University of London London UK
5. Musashino Higashi Center for Education and Research Musashino Higashi Gakuen Tokyo Japan
6. Department of Cognitive and Behavioral Science, Graduate School of Arts and Sciences The University of Tokyo Tokyo Japan