1. Institute for Advanced Study, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
2. Research Center for Applied Perceptual Science, Faculty of Design, Kyushu University, 4-9-1 Shionaru, Minami-ku, Fukuoka, Japan
3. Faculty of Child Development, Nihon Fukushi University, Division of Clinical Psychology, Okuda, Mihama-cho, Aichi 470-3295, Japan