Octagon Measurement: Public Attitudes toward AI Ethics. - Yuko Ikkatai; Tilman Hartwig; Naohiro Takanashi; Hiromi M. Yokoyama (Int. J. Hum. Comput. Interact., 2022)

Segmentation of ethics, legal, and social issues (ELSI) related to AI in Japan, the United States, and Germany. - Yuko Ikkatai; Tilman Hartwig; Naohiro Takanashi; Hiromi M. Yokoyama (AI Ethics, 2023)

Artificial intelligence ELSI score for science and technology: a comparison between Japan and the US. - Tilman Hartwig; Yuko Ikkatai; Naohiro Takanashi; Hiromi M. Yokoyama (AI Soc., 2023)

The relationship between the attitudes of the use of AI and diversity awareness: comparisons between Japan, the US, Germany, and South Korea. - Yuko Ikkatai; Yuko Itatsu; Tilman Hartwig; Jooeun Noh; Naohiro Takanashi; Yujin Yaguchi; Kaori Hayashi; Hiromi M. Yokoyama (AI Soc., 2025)