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

Cristianto Rian Tarra
3 min readMar 19
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.

Blood Type AB: Individuals with blood type AB tend to be unique and complex. They exhibit varying personality traits depending on the situation.

However, the results of studies on the correlation between blood type and personality are still inconsistent. Some studies indicate a correlation between blood type and personality, while others show no significant relationship.

Strengths and Weaknesses of Each Blood Type in the Workplace

Although the relationship between blood type and personality is still controversial, many people still believe that blood type can be an indicator of an individual’s personality traits and characteristics. Here is a summary of the strengths and weaknesses of each blood type in the workplace, based on Furukawa’s hypothesis:

Blood Type A

Strengths: Tend to be perfectionistic and detail-oriented, making individuals with blood type A excellent at…

Cristianto Rian Tarra

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