Blood type personality theory
Pseudoscience linking character and blood type
Blood type personality theory
The blood type personality theory is a pseudoscientific belief prevalent in East Asia that a person's blood type is predictive of a person's personality, temperament, and compatibility with others. The theory is generally considered a superstition by the scientific community. One of the reasons Japan developed the blood type personality indicator theory was in reaction to a claim from German scientist Emil von Dungern that blood type B people were inferior. The popular belief originates with publications by Masahiko Nomi in the 1970s. Although some medical hypotheses have been proposed in support of blood type personality theory, the scientific community generally dismisses blood type personality theories as superstition or pseudoscience because of lack of evidence or testable criteria. Despite the fact that research into the causal link between blood type and personality is limited, the majority of modern studies do not demonstrate any statistically significant association between the...
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