In 1927, Takeji Furukawa, a professor at Tokyo Women's Teacher's School, published his paper "The Study of Temperament Through Blood Type" in the scholarly journal Psychological Research.
Pada tahun 1927, Takeji Furukawa, dosen di Sekolah Guru Perempuan Tokyo, menerbitkan makalahnya yang berjudul "Penelitian Sifat Melalui Golongan Darah" di jurnal ilmiah Psychological Research.