Japanese Blood Type

     Many Japanese people believes that blood type determines personality traits, temperament, and compatibility with others.  That’s why many people in Japan often ask  “What is your blood type?”

It all started at 1927, a professor at Tokyo Women's Teacher's School named Furukawa Takeji published his paper : "The Study of Temperament Through Blood Type" in the scholarly journal Psychological  Research. His idea then somehow become popular among people that time.