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Neuroticism and Extraversion in ABO Blood Groups
Published online by Cambridge University Press: 29 January 2018
Extract
It is known that peptic ulcer patients have an increased incidence of blood group O, (1) and that peptic ulcer patients have above average scores for Neuroticism on the Maudsley Personality Inventory (3). In view of this it seemed worthwhile to see if there is any relationship between blood group O and Neuroticism (2).
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- Copyright © Royal College of Psychiatrists, 1967
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