lasrus
Austrian scientist Karl Landsteiner is credited with the discovery of the ABO blood type system in 1900. Studies of ethnic groups have shown concentrations of blood types in different parts of the world.
Japanese blood type theory of personality
History of the blood type theory of personality
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replied to: lasrus
blockfrei
Replied to: Austrian scientist Karl Landsteiner is credited with the discovery of the...
The theory appeared in the journal Psychological Research in Japan in 1927, in Takeji Furukawa's paper "The Study of Temperament Through Blood Type."