Exploring the Correlation between Blood Type and Personality: An Analysis of Takeji Furukawa’s Research

Cristianto Rian Tarra
3 min readMar 19, 2023
Photo by ANIRUDH on Unsplash

Takeji Furukawa was a Japanese psychologist who gained notoriety for his research on the correlation between blood type and personality. According to Furukawa, a person’s blood type could provide clues about their personality and individual characteristics. However, numerous studies have been conducted to test Furukawa’s hypothesis, and the results remain controversial.

Furukawa’s Research on Blood Type and Personality

In his book “The Study of Temperament Through Blood Type,” Furukawa postulated that blood type could be an indicator of a person’s personality traits. Here is a summary of Furukawa’s hypothesis:

Blood Type A: Individuals with blood type A tend to be perfectionistic and sensitive. They are inclined to pay attention to detail and value cleanliness and neatness.

Blood Type B: Individuals with blood type B tend to be creative and flexible. They are quick to adapt to change and able to think creatively.

Blood Type O: Individuals with blood type O tend to be friendly and open. They are inclined to have a positive attitude and be easy to get along with.

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Cristianto Rian Tarra

Tech entrepreneur and IT leader. Focusing on tech solutions and leadership for business growth. Sharing insights on Medium.