His research interests are history of psychology, law and psychology, non-verbal behavior, & human trivial behavior (lucky charm, gaming etc). He published some books, "History of Psychology" (2012, Sato, Suzuki, & Arakawa)*, "Psychology for thinking"(2012, Arakawa & Asai)*, etc and many papers "Psychology on feelings and emotions, its history in Japan" (2005)**, "Development of "Saiban-in saiban game" and its effects" (2009)***, " Communication in a mock mixed-court jury trial: Its structure and the satisfaction and understanding of jurors" (2010, Arakawa & Sugawara)*** etc. He teach classes in "Introductory psychology", "Seminar in psychology" * In Japanese;