Alina Sanda Bălan
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ABO blood type, personality, psychological differences, temperament
Human personality has a certain biological basis. Hippocrates was among the first to promote the idea, asserting that temperament is determined by a peculiar combination of four bodily humors. In 1901 the Austrian scientist Karl Landsteiner discovered the ABO blood system, and during the years researchers like Takeji Furukawa (1927), Raymond Cattell (1964), Masahiko Nomi (1971) and Hans J. Eysenck (1977) have tried to link the four blood types with personality traits. This was also the aim of our study. We have used a sample of 83 people to examine possible psychological differences between the ABO blood types. The tests we have used were The Cognitive Style Indicator, The Eysenck Personality Inventory, The Wiersma-Heymans Temperament Test and The Zuckerman-Kuhlman Personality Questionnaire. We have measured temperamental traits such as extraversion, neuroticism, impulsivity, hostility, sensation-seeking and primary versus secondary psychological functioning, but also the cognitive styles of a person. Based on the results we can draw a row profile of each blood type. Thus, the O blood type appears as a primary type, balanced, sociable and with low neuroticism. The A blood type appears as a secondary type, with low extraversion and high anxiety. The B blood type appears as extroverted and impulsive, but the general profile is different for males (high sociability) compared to females (high emotivity). The AB blood type appears as primary, with a high need for activity, with the highest tendency for planning activities and the higher score on innovative style; their neuroticism is low, whereas emotivity shows a different pattern depending on gender (with only AB females scoring high on this trait). Although, due to small sample size, only a few differences reached statistical significance, a look at the group means and the effect size coefficients support the idea that temperamental traits have a biological foundation.
Cite this paper: Bălan, A.S. (2024). A PRELIMINARY STUDY ON THE ASSOCIATION BETWEEN ABO BLOOD TYPE AND TEMPERAMENTAL TRAITS. Current Trends in Natural Sciences, 13(25), 130-142. https://doi.org/10.47068/ctns.2024.v13i25.016
