 He was involved in organizing international conferences, initiated collaborative works, and published several books as well as many articles about this topic.Since 2010, his research focus has shifted to the examination of the development of race and racism in modern East Asia and in Japan in particular.Kowner maintains that the question of race, the distress over foreign racism, and the implementation of racist policies in its own colonies have been among the most critical and painful issues in the history of modern Japan and that they were also among the determinants of its national decision-making, at least until the end of World War II.