NPA personality theory
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ABO blood group may offer a clue to high vs low temperament
Posted by Donna Hobgood on March 14, 2018, 7:08 pm
Because of high DBH genetics with linkage with ABO blood group A, that may be a clue to high temperament (based on high norepinephrine to dopamine ratio).
Actually Trump is ABO A which should be linked with high temperament personality.