| In
Japan, a belief that there is a relationship between personality
and ABO blood types seems to have subsided now. Statistical hypothesis
test results deny that relationship for many times up to now. However,
many people still like to talk about blood types in connection
with personality. They believe in predicting the blood type of
one person with accuracy over a probability of 0.25 which is the
mean value in providing the correct answer under the condition
that they select one of the blood types at random. Actually, the
questionnaire results we took several times reveal us an intriguing
phenomenon; in Japan, blood type A and O were more accurately predicted
than the random selection probability of 0.25. In the questionnaires,
personality questions were not included, and this approach is new.
In this research, we focused on the human intuition ability in
predicting the blood types. That is, we investigated whether the
correct answer ratio of human intuition is superior to the probability
of random selection. Based on the conditional probability and Bayes
theories, we show that this kind of superficial result can be expected
as a natural phenomenon. We have revealed that people implicitly
use the underlying knowledge of relationship between personality
and ABO blood types as imprinting, which shows us superficial human
intuition ability. |
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| blood
type, personality, new questionnaire, human intuition, Bayes
theory, imprinting.
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