They believe in the same thing as do Germans.
Koreans view your blood type kind of how people in America view there astrology signs. They believe that different blood types shows personality traits.
The Japanese culture has linked blood type to personality for a long time. This Japanese theory is popular in Korea. It is kind of like how some Americans believe personality is influenced by Zodiac signs.
The Japanese actually use blood type as some sort of makeshift horoscope system. Your personality could be dependent on your blood type, but I'm sure there is opposing research on it as well.
There are some cultures that claim that a blood type can determine aspects of your personality; the Japanese believe that people with blood type B are more practical than those with other blood types. Koreans actually believe that blood type B people are cursed.
Blood types do not determine your personality. Your upbringing and other genes in you body determine how you react to certain situations and how your personality is.
There is no personality correlation with blood type. They blood type you have are as a result of the pairing of your parents, and you may inherit some of their traits, but it is not blood that determines them.
In the Korean culture, personality is often associated with a person's blood type. For example, people with blood type A are thought to be more inclined to being perfectionists. Blood type B people are thought to be more creative and optomistic. The personality traits associated with blood type AB are cool, controlled, and rational. And lastly people with blood type O are ambitious and self-confident.
There is a such a belief. It is a very common belief in Japan that personality is based on blood type. It is also a popular belief in other Asian countries.
It is indeed a popular belief in a lot of Asian culture that blood types are indicative of an individual's personality attributes. A study conducted by Cattell, Young, and Hundleby which was published in 1984 in the American Journal of Human Genetics suggested that there might indeed be some correlation between blood type and personality traits, but further studies was recommeneded.
The Japanese have a link between blood type and personality, which has been a rumour since the 1930's.
Japanese and other Asian cultures believe that an individual's blood type can predict their personality. It is said that individuals with Type O blood are found to be optimistic, sociable, and agreeable. They also tend to be arrogant, vain, and rude. However, scientific evidence does not back the theory of blood type and its influence on personality.
+/- typing on your blood does not come into play when speaking of personality based on blood type. There certainly are beliefs that your blood type can determine your personality. In your case, Blood Type B people are said to be very goal oriented, positive, ambitious. Also Strong and optimistic, you can also be impulsive.