This new, positive linking spread from Japan to Taiwan and South Korea.
In today’s South Korea you’d be hard-pressed to find any native who doesn’t know their blood type.
It has also been suggested that people possessing certain blood types should stick to certain dietary choices.
They can also be considerate to others, patient and are often punctual.
They can be highly creative and can be perfectionists, which can cause them to become too focused on the details.
BLOOD TYPE A – THE INTROVERTED PERFECTIONIST YOU (ARE)… In fact, many experts say that it should be attributed to what’s known as Barnum effect, the tendency to embrace certain information as true and relevant to oneself.
Examples include character assessment tests, horoscopes, tarot reading, and yes, Blood Type-Personality Theory.
Another thing to consider is the fact that all elementary school kids have to go through a mandatory annual student health examination (inclusive of blood type testing), and it must have contributed to the proliferation of this idea, because they are more sensitive about such theory than the kids in other countries who do not know their blood type.