About the Authors

Hirokazu Kumazaki

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – original draft, Writing – review & editing

kumazaki@tiara.ocn.ne.jp

Affiliations Department of Clinical Research on Social Recognition and Memory, Research Center for Child Mental Development, Kanazawa University, Ishikawa, Japan, Departments of Pediatrics, Psychiatry and Special Education, Vanderbilt Kennedy Center, Nashville, Tennessee, United States of America, Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan

Zachary Warren

Roles Conceptualization, Methodology, Writing – original draft

Affiliation Departments of Pediatrics, Psychiatry and Special Education, Vanderbilt Kennedy Center, Nashville, Tennessee, United States of America

Taro Muramatsu

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan

Yuichiro Yoshikawa

Roles Data curation, Funding acquisition, Methodology, Writing – review & editing

Affiliations Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, Osaka, Japan, JST ERATO ISHIGURO Symbiotic Human-Robot Interaction, Osaka, Japan

Yoshio Matsumoto

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Service Robotics Research Group, Intelligent Systems Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan

Masutomo Miyao

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Psychosocial Medicine, National Center for Child Health and Development, Tokyo, Japan

Mitsuko Nakano

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Psychosocial Medicine, National Center for Child Health and Development, Tokyo, Japan

Sakae Mizushima

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Psychosocial Medicine, National Center for Child Health and Development, Tokyo, Japan

Yujin Wakita

Roles Methodology, Writing – review & editing

Affiliation Service Robotics Research Group, Intelligent Systems Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan

Hiroshi Ishiguro

Roles Conceptualization, Methodology, Writing – review & editing

Affiliations Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, Osaka, Japan, JST ERATO ISHIGURO Symbiotic Human-Robot Interaction, Osaka, Japan

Masaru Mimura

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan

Yoshio Minabe

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Clinical Research on Social Recognition and Memory, Research Center for Child Mental Development, Kanazawa University, Ishikawa, Japan

Mitsuru Kikuchi

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Clinical Research on Social Recognition and Memory, Research Center for Child Mental Development, Kanazawa University, Ishikawa, Japan

Competing Interests

Yuichiro Yoshikawa and Hiroshi Ishiguro serve as consultants of Vstone Co. Ltd. Hiroshi Ishiguro owns stock in the same company. This does not alter our adherence to PLOS ONE policies on sharing data and materials.