Bloodtype Personality in Japanese Culture

Blood Type in Japanese Culture

There exists a common, popular belief in Japan and other East Asian countries that a person's ABO blood type or ketsueki-gata (血液型) is predictive of his or her personality, temperament, and compatibility with others, similar to how astrological signs are used in other countries throughout the world, although blood type plays a much more prominent role in Japanese and the societies of other East Asian countries than astrology does in other countries' societies.

Best and Worst Traits Blood Type

Ultimately deriving from ideas of historical scientific racism, the popular belief originates with publications by Masahiko Nomi in the 1970s. The scientific community dismisses such beliefs as superstition or pseudoscience due to their lack of basis on demonstrable evidence or reference to testable criteria. Although research into the causational link between blood type and personality is limited, current research conclusively demonstrates no statistically significant association.

Best and Worst Traits

Type A:
Best Traits: Earnest, sensible, reserved, patient, responsible, quiet.
Worst Traits: Fastidious, unsocial, stubborn, tense.

Type B:
Best Traits: Wild, active, doer, creative, passionate, strong.
Worst Traits: Selfish, irresponsible, unforgiving, unpredictable, lazy.

Type AB:
Best Traits: Cool, controlled, rational, adaptable.
Worst Traits: Critical, indecisive, unsociable, forgetful, "split personality", mean, selfish.

Type O:
Best Traits: Agreeable, sociable, optimistic, artistic, passionate.
Worst Traits: Vain, rude, jealous, arrogant, chatterbox.

General Personality

General personality of people who have type A blood:

• Consider things carefully 
• Can understand other people’s feelings easily 
• Kind 
• Good at hospitality 
• Don’t express themselves in order to avoid possible quarrel 
• Do things carefully and steadily, and don’t take the next step if they are not satisfied 
• Honor student types who don’t go off the rail 
• Fastidious 
• Big on cleanliness 
• Can be calm even when accidents happen 
• Strong on taking responsibility 
• Hard workers 
• Safe drivers 

Type A blood people’s affinity with each blood type:

• Partner who is type A – They have many common points; however, both of them are highly strung, so they may be irritated by each other. 
• Partner who is type B – Type A person envies type B’s happy-go-lucky personality. However, type A person worries about type B person’s personality. 
• Partner who is type AB – Type AB person is reliable for type A, someone they can turn to for good advice and help. They can have a stable love relationship. 
• Partner who is type O – Type O person is protective of type A. However, if type A talks about every small thing, the relationship won’t be good. 

General personality of people who have type B blood:

• Like to go their own way 
• Do what they want without considering other people’s feelings, rules and customs 
• Happy-go-lucky and masters of breaking rules 
• Optimistic 
• Friendly and open their heart to anybody 
• Not pretentious 
• Afraid of being alone 
• Get lonely easily 
• Quick to adapt 
• Flexible thinkers 
• Pragmatists 
• Don’t chase a dream much 
• Like to play 
• Love festivals and parties 
• Have been in love many times 
• Don’t get heart-broken over lost love 

Type B blood people’s affinity with each blood type person:

• Partner who is type A – Type A person is always willing to help type B person; however, they get tired of each other easily. Type A often complains to type B. 
• Partner who is type B – Both of them are not careful, so they may do things that are off the rail. 
• Partner who is type AB – They attract each other and they may quickly start a relationship. They love each other very much. 
• Partner who is type O – They can understand each other easily. Type O person covers for type B person’s bad points. They are a great match for friendship. 

General personality of people who have type AB blood:

• Chase ideals and dreams 
• Don’t have secular needs such as greed and a desire to succeed 
• Have strong spirituality 
• Calm and rational 
• Sensitive and easily hurt 
• Have a complicated personality 
• Private life is important 
• Don’t like interference from other people 
• Have various hobbies 
• Vigorous in pursuit of knowledge in wide range of fields 
• Are bookworms 
• Have unique ideas and are creative 
• Have fairy tale-like hobbies 
• Calm and frank about love relationship 

Type AB blood people’s affinity with each blood type person:

• Partner who is type A – Type AB person respects type A person, and they have a passionate love for each other. However, they may quarrel frequently. 
• Partner who is type B – They are a good match and connect with each other easily. 
• Partner who is type AB – Their relationship is always proceeding along parallel lines. They cannot open their minds to each other. It is best not to be too close to each other, nor be too far apart. 
• Partner who is type O – They can succeed in business and at various activities together. They can produce new things together easily. 

General personality of people who have type O blood:

• Realistic 
• Good at developing economic concepts 
• Vigorous at earning a living 
• Strong in face of adversity 
• Romanticists 
• Dream of getting rich quick, but actually take a steady approach 
• Ambitious 
• Go straight toward their goal 
• Have leadership ability and often take care of younger people and people below them 
• Very cautious 
• Don’t care about small things, taking a wider perspective instead 
• Devoted, but with a strong desire to monopolize 

Type O blood people’s affinity with each blood type person:

• Partner who is type A – Type O person always wants to take the lead for type A person. They are a good combination. 
• Partner who is type B – They can talk freely and openly and have a comfortable relationship. However, type O person gets confused by type B person’s moody personality sometimes. 
• Partner who is type AB – Their thoughts are a match. However, if they are in the same “arena,” they compete with each other strongly. 
• Partner who is type O – They cannot understand each other basically, and they feel alienation easily. It is best not to get too close together. 

Sources:
http://en.wikipedia.org/wiki/Blood_types_in_Japanese_culture
http://tvtropes.org/pmwiki/pmwiki.php/Main/PersonalityBloodTypes
http://www.japantoday.com/category/lifestyle/view/the-importance-of-blood-type-in-japanese-culture