Interesting study by Prof. Hideo Hirose: Human Intuition Can Guess Blood Type

Here is an interesting study by Mr. Hideo Hirose, Professor at the Kyushu Institute of Technology (now he is at the Hiroshima Institute of Technology), in which person's ABO blood types can be guessed intuitively.

Source: Hirose Lab.

Hideo Hirose, A Probabilistic Solution for the Mystery of Japanese Blood Type Prediction Accuracy (2015) Asian Conference on Psychology & the Behavioral Sciences 2015 Official Conference Proceedings. -> Source (PDF)

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.