What is blood type personality егэ ответы

Blood type personality is a Japanese concept called ketsueki-gata that posits that blood type shapes one’s temperament.

Ketsueki-gata is considered a pseudoscience, a body of thought that appears to be based on scientific principles but is not actually rooted in fact. Although there’s no real proof that blood type influences personality, the belief is widespread in Japan and other Asian nations. It is also increasingly garnering interest in Western countries such as the United States.

Become more familiar with the theory of ketsueki-gata with this overview of its history, principles, influence on society, and potential pitfalls.

History of Ketsueki-gata

In 1930, Japanese professor Tokeji Furukawa published a report in the Journal of Social Psychology called “A Study of Temperament and Blood-Groups.” In this paper, he argued that establishing a link between personality and blood type “might prove a useful basis for the objective study of temperament.”

He compared this effort to the ancient Greek physician Hipporcrates’ classification of temperaments as sanguine, phlegmatic, choleric, and melancholic, which stem from the concept known as humorism. According to this concept, four bodily fluids influence personality and behavior, but Furukawa asserted that modern classifications of temperaments typically fell into two groups: physiological and psychological. The concept of blood type personality blends the two categories together, using physiology to explain the psyche.

Blood types A, B, O, and AB each have a unique effect on personality, Furukawa argued. Medically, the blood types are distinct from each other because of their antigens, molecules on the surface of red blood cells that spur the immune system to generate antibodies. But Furukawa’s interest in blood type went far beyond the scope of antigens.

In his paper, he included detailed charts to argue that blood type corresponds with temperament, but his research has been criticized for relying heavily on questionnaires and providing no empirical evidence. Other researchers began to challenge Furukawa’s claims about blood type personality just six years after he published his report. Still, the concept of ketsueki-gata never disappeared, as multiple books on blood personality types hit the shelves in the 1970s. Together, they drew attention to the subject once more.

From 1984 to 1985, more than 200 publications printed papers on blood type personality, resulting in the enduring popularity of the concept in countries such as Japan, Korea, and Taiwan, and milder interest outside Asia.

Studies about ketsueki-gata have continued well into the 21st century all over the world, including Australia, Taiwan, and the United States. So far, no rigorous scientific study including quantitative data has established a link between blood type and temperament. Yet, belief in ketsueki-gata persists—even in the United States, where authors have found success arguing that a person’s blood type should inform lifestyle factors such as diet.

What Ketsueki-gata Believers Think About Personality

Ketsueki-gata believers maintain that each of the four blood types corresponds with distinct personality traits, making different blood types more compatible with some than others. Here’s how the blood types purportedly break down by temperament. 

  • People with type A blood have been linked to positive traits such as creativity, cleverness, and cooperativeness, whereas their supposed negative traits include stubbornness and uptightness. Type A individuals are reportedly more common in Japan than people with other blood types.
  • Individuals with type B blood are supposed to be strong, passionate, empathetic, and decisive, but they have also been associated with selfishness and erratic behavior. People with this blood type are said to clash with those with type A blood.
  • The purported strengths of those with type AB blood include rationality and adaptability, but their weaknesses are said to be indecision, criticalness, and forgetfulness. This blood type is largely viewed as having the characteristics of both type A and type B individuals. Because this blood type is rare, the people who have it are heavily appreciated in Japan.
  • Type O people have been linked to characteristics such as confidence, determination, resilience, and intuition, but they are also supposedly self-centered and unstable. They are said to especially appear selfish to individuals with Type A blood. 

Meanwhile, in the U.S., blood type has not been linked to personality so much as it has been tied to specific diseases. For example, Type A individuals have been found to have an increased risk of stomach cancer and heart disease; Type B people also have an increased risk of heart disease and of ovarian cancer; Type AB individuals have an increased risk of heart disease and of pregnant women developing preeclampsia; and Type O individuals are more likely to develop ulcers, attract mosquitoes, and have Achilles tendon injuries.

The Pitfalls of Blood Type Personality

Since blood type personality is widely accepted as reality in Japan, it does have some pitfalls. It has been linked to discrimination in both the workplace and in the singles scene. While positive and negative characteristics are associated with each blood type, some blood types are perceived to be better or worse than others.

Type B individuals, for example, are reportedly viewed as misfits in Japanese society because they’re said to go at their own pace and behave oddly.  On the other hand, type AB individuals enjoy workplace advantages. In 1990,  Japanese newspaper the Asahi Daily reported that Mitsubishi Electronics hired a team composed mostly of type AB people because of their purported knack for planning.

In the dating scene, someone might reject a potential partner purely based on fears of incompatibility due to blood type. Fortunately, the question “Ketsuekigata nāni?” (血液型なあに? What’s your blood type?) is typically asked in the very early stages of dating, so no one is likely to truly get their heartbroken over a purported blood type mismatch.

The Appeal of Blood Type Personality 

Although no legitimate scientific research linking blood type to personality has been published, people continue to believe in ketsueki-gata. Why? Psychologists have said that many simply enjoy the topic and use it as a way to break the ice with others. Moreover, in an uncertain world, the blood type personality theory can give people confidence about where they fit in and what their strengths and weaknesses are.

As with astrology, people often consult blood type personality because they believe it provides clues about their future. So, believers in ketsueki-gata aren’t primarily focused on what the science says about blood type personality, they’re largely focused on better understanding their own lives.

Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

By Nadra Nittle

Nadra Nittle is a Los Angeles-based journalist and author. She has covered a wide range of topics, including health, education, race, consumerism, food, and public policy, throughout her career. 
 

Thanks for your feedback!

In this article, we will discuss the Blood type personality. We will do that by giving an overview of the blood type theory, its development, and popularity. We will then discuss the four blood type personalities along with their characteristics based on the four blood groups. In the end, we will discuss the compatibility between blood group personalities. 

The Blood type personality 

Blood type personality is based on blood group theory given by a Japanese professor ‘Tokeji Furukawa’. According to him, the differences among people’s characteristics are genetic and based on the blood group they possess. However, his ideas are not backed by scientific evidence. It is similar to the horoscope trend which is popular among people. In the same way, in the Japanese culture, people inquire about blood groups of people to assess personality and compatibility between people. Each blood group has a different personality. So, there are four types i.e. blood group A personality, blood group B personality, blood group AB personality, and blood group O personality. Their details are discussed as follows.

An Overview of Blood Type Personality

In different countries, people have different ways of understanding the personality of others. Some cultures feel comfortable relying on astrological information to understand personality. Whereas, other cultures rely on different methods. Blood type or blood group is one of these methods. The Japanese and South Korean culture likes to rely on the blood group of someone in order to understand their personality and characteristics.

In companies, among friends, and even among romantic partners, this practice is quite popular in Japan. They check compatibility by inquiring about the blood group of someone. Despite the fact, that scientifically it is not backed up and warnings have been given to the general public to not rely on the authenticity of blood group personality, its usage continues to this day. Employers select employees based on their blood group. Similarly, schools split up children based on their blood group and so on. However, it must be mentioned that this discrimination is not too severe. It is similar to the horoscope addiction some people have with no drastic implications. In the same way, the general public varies in terms of their beliefs about blood groups determining the personality of a person. 

Blood Type Theory Development

The term commonly used in Japan is ‘Ketsueki-gata’ when evaluating a person and their traits based on the blood group they possess. A Japanese Professor in the 1930s published a paper stating that a blood group of a person gives an insight into the personality they possess. His name was Tokeji Furukawa. He used chi-square to test his findings. However, his motivation behind the study was to figure out why racism was done by Taiwanese soldiers. He tried to support the argument that their cruel behavior was genetic. He concluded that Taiwanese people should marry Japanese people to reduce blood type O and accordingly decrease toxic personality traits. 

Masahiko Nomi revived this theory in the 1970s. He had no medical background, yet he continued to produce statistically significant findings based on the blood group theory. He was criticized by Japanese psychologists based on no prior scientific or medical background. After his death, his work was re-evaluated and it was concluded that his study was not controlled properly and had unclear methodology. Yet, his son built upon his father’s work and continued with his research. 

The blood type personality is mostly dismissed in the scientific community. It is considered to be a pseudoscience and superstition since the evidence does not back up the claim that blood group predicts a person’s personality. 

Based on blood group theory, incidents of discrimination and racism have been reported. Blood type harassment or ‘bura-hara’ also exists. It is when children are discriminated against based on the blood group they possess. Similarly, job opportunities and relationships can also get strained due to this. 

Personalities based on Blood Groups

There are four types of blood groups i.e. A, B, AB, and O. Each blood group is different from the other based on their antigens. Antigens refer to a molecule that is present on the surface of the red blood cells. These decide how well our immune system works. According to Japanese people, these antigens are a medical basis of why our personality differs from one another. 

Personality based on Blood Group A

People with blood group A can be described as someone who likes to cooperate with others. Blood Type A personalities are also emotional and sensitive people who are quite passionate in their relationships. They are committed and loyal to their friends. Their priority is to maintain peace and harmony both internally and externally. This points to the idea that these people do not like to get into conflicts. 

At times, they can be quite sensitive and get hurt easily. They are not open to going against the rules. Rather, their tendency is to do things by the book, follow rules, and uphold social standards. 

They keep their pace slow while making decisions and carefully weigh their options before committing to something. Their focus is to be organized and systematic. When they start a task, they make sure to do it thoroughly and avoid multitasking so that their attention is not divided. They like order and neatness in their life. In a way, they share characteristics with OCD personality. They also get stressed easily due to high levels of stress hormones in their body. 

Personality based on Blood Group B

People with type B blood group can be described as having quick thinking. Accordingly, they are quite creative and make decisions in an efficient manner. They dislike being ordered around by authority. So, this indicates that they like to follow their own rules. They invest their energy and put effort into making their work stand out. They put in a part of themself in their work. Due to such emotional and mental investment, they avoid multitasking to maintain the quality of their work.

These people are considerate and thoughtful toward others. They are also empathetic and attentive to the needs of others. Due to this, they make reliable friends and partners. However, they can also be self-centered and uncooperative at times. This can strain their relationship with others. Due to this, people avoid them and Type B personalities tend to be loners.

Personality based on Blood Group AB

When a person has both blood group A and B, they are called the AB blood group. Accordingly, their personality is also an overlap of both blood type A and type B personality. They are quite rare personalities in the world.

They can be quite complicated since they are shy as well as outgoing. They do not open up to others quite easily. So, we can say they are reserved and private people. They are friendly individuals who use their social skills to make friends. They make sure others are at ease in their presence and enjoy their time. Furthermore, they are empathetic and considerate of the needs of others. They are not good at handling stress.

Personality based on Blood Group O

People with blood group O can be described as outgoing personalities who are not afraid of taking risks. They have high standards and high expectations from themself. We can say that they are achievement-oriented and make good leaders. They do not focus on minute details. Furthermore, they can be described as generous and loving. They are also flexible and adapt easily to different situations. They are confident and easygoing people who like to have peace in their life. They prefer to be the boss rather than being ordered around. With their friends, they are loyal and devoted. 

Compatibility between blood type personalities

Just like different blood groups are compatible with specific partners, the same is the case in terms of their personality. Type O blood group personality is compatible with AB  blood group personality and O  blood group personality. Typ A  blood group personality is compatible with type A  blood group personality and type AB blood group personality. Type B blood group personality is compatible with B  blood group personality and AB  blood group personality. Whereas, type AB  blood group personality is compatible with all blood group personalities. 

If you’ve enjoyed the ”Blood type personality” mentioned above, I would recommend you to take a look at ”Personality types that get along” and ”Personality and Eye Shape” too.

Can your blood determine your personality?

No. Scientific evidence does not support the claim that blood groups can determine the personality of people. However, just like the popularity of horoscope culture, the blood group personality is also popular among countries like Japan and South Korea. There, they inquire about the blood group of a person to understand their personality.

What is the personality of blood type a?

People with blood group A, have a personality that is corporative and sensitive to the emotions of others. They are loyal to their friends and patient in their manner. They dislike conflicts and strive for peace and harmony. They can be quite sensitive as well. 

What are the five rarest blood types?

Rarest blood types are stated in their respective order including AB negative, B negative, AB positive, A negative, O negative, B positive, A positive, and O positive.

Which blood type lives the longest?

According to Shimizu and colleagues up, blood type B has been linked with longevity. yet, different reports suggest Blood group A and Blood group O as associated with longevity. So, we can say that the results are not too conclusive. 

Can your blood type change?

No. Usually, the blood type of a person remains the same throughout their life. In some cases, the blood type can change but it is usually dependant on some medical issues or some operation. Not all blood type changes are permanent or remain the same throughout a person’s life. 

Conclusion

In this article, we discussed the blood type personality. We found that Blood type personality is based on blood group theory given by a Japanese professor ‘Tokeji Furukawa’. According to him, the differences among people’s characteristics are genetic and based on the blood group they possess. However, his theories are not backed by scientific evidence. It is similar to the horoscope trend which is popular among people. In the same way, in the Japanese culture, people inquire about blood groups of people to assess personality and compatibility between people. Each blood group has a different personality. So, there are four types i.e. blood group A personality, blood group B personality, blood group AB personality, and blood group O personality. 

 I hope you found this article interesting. If you have any queries or comments, please state them in the comment section 😊

Citations

https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/whats-your-blood-group-the-answer-might-reveal-some-interesting-things-about-you/photostory/69024174.cms?picid=69024370

https://en.wikipedia.org/wiki/Blood_type_personality_theory

https://www.betterhelp.com/advice/personality/blood-type-personality-what-does-your-blood-say-about-you/

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japanese blood type personality

Strike up a conversation in a bar or head out to a dinner party in Japan and the likelihood is that the conversation will, at some point, steer towards blood type (ketsuekigata 血液型).

Foreigners are sometimes perplexed about this Japanese fascination with blood type, which is often used as small talk when meeting someone for the first time or getting to know them.

So why are you constantly asked for what outsiders may deem personal medical information?

what does my blood type say about me

Japanese Blood Type Personality Theory

It is a widely held belief in Japan that your blood type determines your personality. This is a relatively modern concept as blood types themselves were only discovered in 1901.

The theory of linking blood type to personality first appeared as early as 1916 and was later taken up by the military who apparently used blood type to analyze the strengths and weaknesses of their soldiers, and reportedly organized battle groups during WWII based on blood type.

However, the idea largely lay dormant until it was revived by journalist Masahiko Nomi in the 1970s with his best-seller Ketsuekigata de Wakaru Aisho (Understanding Affinity by Blood Type).

He wrote more than 10 popular books on the subject until his death in 1981, after which his son, Toshitaka Nomi, continued developing the study through his own books and research facility, the Institute of Blood Type Humanics. The pair have been widely credited as bringing blood type personality theory into mainstream Japanese thinking.

The theory has been based on observational studies of people of the four blood groupings, and while there is no real scientific proof to the claim that blood type determines character, most Japanese believe that there is at least something semi-scientific about it.

Let’s look at the characteristics stereotypically attributed to each blood group.

Note that many tendencies are thrown around for each blood type, however, the following are major generalizations that seem to come up time and time again. Also note that blood typing, at least under the current theory, is not concerned with + or -, simply the major letter group.

blood type personality traits

A Blood Type Personality

Type A’s are considered to be highly organized, particular, precise, pay attention to detail, perfectionists. They like things to be done a certain way, which can be perceived as annoying by others.

They also tend to be fairly quiet and shy, like to listen and follow along with conversations rather than leading them. Type A’s are sensitive and take things to heart.

B Blood Type Personality

Type B’s are easy-going, relaxed and bubbly. They are very honest and say what they think, which, depending on the circumstances, can be perceived as a good characteristic or as selfish.

They can concentrate but only on things that interest them, and have a tendency to go on about things that are of little or no interest to those around them.

Type B’s might be accused of being “KY“, an abbreviation of “Kuuki ga Yomenai (空気が読めない)” which literally means that you “can’t read the air” i.e. you are not picking up on social signals.

O Blood Type Personality

Type O’s are your anything goes, personable, get-along-with-everybody types. Because of this, they are often viewed as good mediators or problem solvers.

They don’t like to do tedious or highly detailed work. Type O’s are big picture, visionary and self-confident. Although their over self-confidence at times may be viewed as arrogant. Interestingly, most Japanese Prime Ministers have been type O’s.

AB Blood Type Personality

The rarest blood type, AB’s are often considered to have dual personalities: the precise and particular qualities of the A group along with the free-spiritedness of the B’s.

They tend to be creative and inquisitive and, interestingly, most geniuses are said to come from the AB group.

Blood Type Personality Compatibility

So what about compatibility between the blood types?

A is most compatible with A and AB.

B is most compatible with B and AB.

O is most compatible with O and AB.

AB is most compatible with AB, B, A, and O.

blood type compatibility love

While the personable and ‘get along with everyone’ O’s keep the peace and the party going, you’ll see they actually get along best with other O’s and AB’s.

Given the seriousness of A’s and the care-free nature of B’s, they are often considered to be horrendous love matches. TV shows and movies have alluded to the “all fun with no responsibility” stereotype of the B’s driving their partner, more often than not an ‘A’ seeking romance and commitment, mad.

On the flip side, AB’s are said to be compatible with any blood type.

Just how seriously do the Japanese take blood types?

In a society that views itself as by and large ethnically homogeneous, blood type has become a socially acceptable way of differentiation. It is considered a comfortable way of categorizing difference.

While on the surface, it’s simply a fun conversation starter that will inevitably lead to a guessing game as to what someone’s blood type is based on observation of their behavioral tendencies, the answer is taken with a certain level of seriousness by the majority of the population.

It is said that one of the reasons blood type personality theory has taken off in Japan is that, unlike with many other ethnicities that may be dominated by two of the blood types, all four blood groupings are fairly evenly distributed. This makes the Japanese population quite diverse and thus this theory more interesting.

To get an idea of just how much this theory has gripped the Japanese public, take a look at some of these examples of how blood types permeate everyday Japanese life.

Blood type horoscopes

Blood type horoscopes or fortunes (katsuekigata uranai 血液型占い) predicting your day ahead can be found in daily newspapers, on television shows and on TV advertising screens on trains.

Shopping for your blood type

In Japan, you can buy products for your blood type, such as soda, chewing gum and bath salts that apparently “balance out” the less desirable tendencies of your type. Even blood type condoms are available.

During the New Year sales, department stores sometimes offer special lucky bags based on blood type.

Dating and blood type

Dating sites, and indeed the population at large, use blood types to determine amorous compatibility.

Blood type profiles online

Blood type has become such a popular identity marker that it is included on public profiles such as websites and social media platforms like Facebook.

High profile celebrities and government officials see their blood type as important enough to list on their official sites. I even visited a hair salon’s website once that listed their hair stylists by blood type.

Blood type in anime, manga and video games

Anime (animations) and manga (comics) may also refer to their characters’ blood types and have them behave in a stereotypical manner.

Some video games also allow blood type to be chosen when building a character.

Blood type in sports and education

Professional athletes may have their training adjusted to their blood type. This was notably done with the Japanese women’s softball team who won gold at the 2008 Beijing Olympics.

Some kindergartens organize their classes based on blood type and educate the children accordingly.

Blood type at work

Don’t be surprised if you are asked for your blood type during a job interview.

It is not uncommon for it to be used as a means of deciding suitability for certain roles and some companies have been known to organize their workers based on blood type.

Books on blood type personality

There is an abundance of literature on blood types and your personality, offering advice on work, love and diet.

Masahiko and Toshitaka Nomi combined have sold more than 6 million copies of their books and in 2008, four of the top 10 best-sellers were books on blood types determining personality.

Blood type harassment in Japan

While it may be deemed harmless fun by many, as with anything that pigeon holes people, there is the potential for discrimination.

The Japanese have even come up with a term for it, bura-hara or “blood harassment”. It’s been blamed for bullying at schools and work, and the ending of otherwise happy relationships.

blood type personality japan

In general, it’s the B’s that seem to get the hardest time for their blood type, especially in the world of romance.

In business, A’s are the most highly sought after due to their work ethic, attention to detail and relative shyness, which means they are not too over-confident. They are deemed to be the best managers.

A’s are often regarded as having an easier ride in the workplace while other blood type employees can expect their work to be watched for detail. It has been reported that some bosses have asked non-A blood type employees to aspire to being more like an A.

Japan’s social lubricant

Whether you believe there is something to the link between character and blood type or you think it should be put in the ridiculous pile, blood type conversations will be something you will encounter once you get talking to enough Japanese people.

When I used to teach in Japan, my classes would often ask me about my blood type on my first day. It was their way of trying to ascertain what kind of teacher I was going to be. Strict? Easy going? Lesson style?

personality according to blood type

Being brought up in a society where your blood type is a known fact from a young age and permeates public thinking, many (especially younger) Japanese people find it hard to believe that a foreigner may not know their blood type unless they’ve had a reason to find out.

While blood type may not have meaning for you, this topic is often considered a “social lubricant” in Japan, a ‘get to know you’ topic used by way of introduction. If you don’t answer honestly or mock this belief, it may be considered impolite or abrasive.

It is often believed that foreigners claiming not to know their blood type, must just be hiding it out of some kind of shame or embarrassment.

What do you think about blood type personality theory? Do you know your blood type? Do you think these stereotypical character traits reflect your personality?

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In America, some people look up a potential partner’s star sign to see their personality type and compatibility. If you are not too shy to admit it, you may have sought advice on this and relationships from the stars at one time or another. Some people do not rely on the astrological signs of personality information but rather on their biological markers. Continue reading to learn about this unique take on what makes us individuals and see how it may apply to you or someone you know. We will also provide resources for online therapy services if you’re interested in diving deeper into self-discovery.

Blood Type Personality, Though Interesting, Is Not Legitimate

What Is Blood Type Personality?

In Japanese society, the dating set might ask someone what their blood type is to learn more about them. It may surprise you to learn there is a whole blood type personality theory that has become popularized in Japan.The concept of blood type personalities might seem foreign to us, yet understanding blood typing is quite popular in certain countries. Some believe that personality traits are inherently connected to your blood type. Although a potential link between blood type and personality is a fun idea, there’s currently no scientific proof to back up blood personality type, meaning the overall theory of blood type personalities is to be viewed as more of a fun exploration than a scientific pursuit.

Similar to how some Americans like to entertain the idea of astrology and horoscopes for fun, some people in Japan enjoy exploring their personality and how it might relate to blood type. One study showed that 99% of Japanese people know their blood types, though it’s important to note that it’s common for many people, regardless of ethnicity, to know their blood type for medical reasons. Nonetheless, the Japan Times has embraced this fun theory and has written popular articles on how the primary blood types indicate personality traits.

Japanese Professor Tokeji Furukawa Advances Blood Type Personality Theory

The idea of blood type influencing one’s personality isn’t restricted to Japan and may not have even originated there. According to an article in Scientific American magazine, ancient philosophers such as Hippocrates and Aristotle explored the notion of a person’s personality based on different blood types. The article goes on to say that Japanese Professor Tokeji Furukawa chose blood as a physiological characteristic that could be classified according to types. His work was the basis for 204 publications by other researchers that discuss the connection between blood types and personality.

There are four primary blood types: A, B, A/B, and O. According to personality theory, the type of blood you have indicates the type of person you are, and the type of blood you have directly correlates to one of four personality types.  It’s important to note that, again, the ideas below are not backed by consistent information and should be considered more of a fun idea to explore rather than absolute markers of personality or individual identity. Everyone exists on a spectrum, and none of us can be summed up or defined simply by our blood type. As you read this, you are likely to identify with all or multiple of the descriptions to some degree or another, regardless of your blood type.

Blood Type A Personality

People with blood type A may be clever, passionate, sensitive, and cooperative. They can be loyal and patient, and they love peace. Sometimes, they may be overly sensitive about different things as compared with other blood types. For instance, they might care a lot about etiquette as well as social standards. According to blood type personality theory, A personalities do not like to break the set rules on etiquette or the societal standards or rules that have been laid down. Occasions when they choose to break the rules are considered self-fulfilling prophecies.

A blood type personalities are considered careful decision-makers, and they can be known to take their time before they can settle on any decision. Moreover, they are not efficient at multi-tasking, as they prefer to handle one task at a time. Blood type A people are very organized, and they may not like haphazard actions. These blood type personalities prefer to keep everything neat and in the right place. In fact, they may go to great lengths to keep things neat and tidy. They might plan everything, and every task they engage in may be carried out with much consistency and seriousness. Many people with OCD fall may into this category and may benefit from seeking help from a professional counselor who can help with overcoming obsessive-compulsive behaviors, if desired.

People in the A blood type category may be very stubborn and easily stressed. They may have higher levels of the stress hormone cortisol, and this can cause them to be perceived as intense. They do not like fights and prefer to be in harmony with everyone, and they like to work in collaboration with others in the community. They tend to keep to themselves more so when they do not want to confer their ideas or opinions. Some of the most common traits of blood type A are as follows:

  • Kind

  • Shy

  • Stubborn

  • Attentive

  • Composed

  • Polite

  • Tense

  • Withdrawn

  • Reliable

  • Perfectionistic

  • Sensitive

  • Tactful

  • Anxious

  • Earnest

As friends, people with type A are considered very reliable and trustworthy. If you are in trouble, you can rely on friends with this blood type. They may not like to show their emotions; they keep their thoughts or feelings about things hidden from others, and they only show vulnerability when comfortable. Famous people with blood type A include George Bush, Jet Li, Britney Spears, and Richard Nixon.

Blood Type B Personality

People with the B blood type may be more likely to be creative individuals. Individuals who have B blood may make their decisions quickly, and they are not good at taking orders. When type B blood people focus on something, they put their all into it, and they are unlikely to let go, even if the goal seems unachievable or impractical. People with a B blood type can have a very strong drive or desire to be the best at anything that they have set their minds to do. Nevertheless, according to blood type personality theory, people with this blood type are poor at multitasking. They are likely to neglect other important tasks and put all their focus on whatever they have set their mind on at the moment.

Blood Type Personality, Though Interesting, Is Not Legitimate

B blood type people might face a lot of discrimination because of their potential negative personality traits, such as a tendency to be more selfish or uncooperative and stubborn at times. Society mainly focuses on the negative side of people with blood type B, even though people with this blood type (like any person) have many good qualities, too. As a result, they may tend to be loners, and may isolate themselves from others more so than other blood types. 

Blood type personality theory states that they may tend to approach things at their own pace. Some of the most common positive traits of people with blood type B include the following:

  • Curious

  • Relaxed

  • Strong

  • Adventurous

  • Creative

  • Passionate

  • Active

  • Outgoing

  • Cheerful

On the other hand, negative traits can include being “wild,” erratic, unforgiving, selfish, uncooperative, irresponsible, or unpredictable. Bs are generally a balance of As and Os, as they are both thoughtful and ambitious. Famous people with type B include Vince Young, Leonardo DiCaprio, and Jack Nicholson. People with blood type B are more compatible with fellow blood type Bs, but they can also relate well with blood type AB.

Blood Type AB Personality

Blood type AB, based on the theory, is a mix of A and B personality types. People consider AB types to be complicated and double-sided. For instance, they can be outgoing just like Bs but also shy. At times, people view this blood type as having double personalities, and Abs may keep their true personalities from strangers. It is hard for a stranger to instantly decide which personality people with type AB have until they get to know them. 

People with the AB blood type are considered the rarest in the world. AB blood type people are empathetic, and they are likely to be careful when interacting with others. They make sure that they consider other people’s points of view. These people have exceptional logical and analytical skills, and they are seen as humanists.

Some of AB blood types’ good traits can include the following:

  • Caring

  • Charming

  • Composed

  • Dependable

  • Sociable

  • Ambitious

  • Adaptable

  • Diplomatic

  • Rational

An AB personality’s negative traits can include being self-centered, irresponsible, vulnerable, indecisive, forgetful, unforgiving, and critical. Famous people with AB blood types include Barack Obama, Marilyn Monroe, Jackie Chan, and John F. Kennedy.

Blood Type O Personality

People with blood type O are considered to be outgoing, go-getters, and daring. Blood type personality theory states that they usually set high standards for themselves, and they do all they can to achieve them. Blood type Os have excellent leadership capabilities. Little things do not concern them, and this may make them appear selfish to people in blood group A who may be overly sensitive. 

Some of the positive personality traits in people with blood type O include the following: 

  • Self-determined

  • Easygoing

  • Optimistic

  • Confident

  • Loyal

  • Cautious

  • Passionate

  • Resilient

  • Devoted

On the negative end of the spectrum, Os can be jealous, rude, ruthless, insensitive, unpunctual, unpredictable, cold, self-centered, workaholics, and arrogant. 

Individuals with blood type O are very enduring and strong, and that is why the Japanese call them warriors. They are honest people and despise people who tell a lie or hide the truth. People who are O are not overly cautious about small details, as they tend to focus more on the big picture. Famous people with blood type O include Queen Elizabeth II, Paul Newman, Elvis Presley, Ronald Regan, John Gotti, and Gerald Ford.

Medical Concerns Regarding Blood Typing

While blood typing has been somewhat studied as a form of social psychology, scientific research and peer reviewed studies have primarily explored how blood type and the immune system works in connection with diseases such as cardiac disease and stomach cancer. Blood typing may help identify an increased risk of heart disease depending on a person’s blood type. Heart disease is particularly concerning for pregnant women who may have weaker immune systems depending on their blood types. 

Furthermore, various blood types have also been connected to an increased risk of stomach cancer. The number of a person’s red blood cells is directly related to the strength of a person’s immunity against bacteria and infections. New research shows that red blood cells are immune sensors in our bodies which could be a clue for diagnosing infections in critically ill people.

In pregnant women, the heart has to work harder, causing stress to the heart and blood vessels. There is an increase in blood volume and cardiac output which increases a pregnant woman’s heart rate. At the same time, blood pressure can decrease during pregnancy, causing a pregnant woman to feel short of breath and light-headed. According to the Harvard School of Public Health, women who have blood types A, B, or AB have an increased risk of cardiac disease. In relation to cancer and blood typing, one study found that people with type A blood had an increased risk of stomach cancer while people with type O blood had a slightly decreased risk of stomach cancer. The reason is that people with blood type A are more prone to H. pylori infections.

Regardless of your blood type, whenever you have a serious physical condition, it can impact your mental health. If this occurs, a licensed therapist can help you cope with trying times.Can I Change Undesirable Aspects Of My Personality?

As previously emphasized, blood type personality theory has not been confirmed by peer-reviewed research. That said, it is worth thinking about why one would choose to consult a personality assessment, like a blood type personality questionnaire, enneagram test, or Myers-Briggs personality assessment. Perhaps this decision indicates a curiosity to uncover information about our strengths and weaknesses. In this situation, licensed healthcare professionals are a more reliable resource.

Is there a personality trait you have that others find undesirable? Are you interested in changing your habits or coping mechanisms in the face of challenges? Online therapy may be a beneficial option for you, especially since it allows you to schedule appointments at a time that works for your schedule. Additionally, you can attend an appointment from any location with a reliable internet connection. For more reserved personalities, these benefits may make seeking support more accessible.

Online therapists can use a variety of treatment approaches, including cognitive behavioral therapy (CBT), to help participants achieve their goals. When it comes to changing personality traits, specifically, internet-based CBT has been found effective as an intervention for improving symptoms of neuroticism when it comes to severe health anxiety. In a separate study, researchers screened undergraduate college students for maladaptive perfectionism and utilized a web-based CBT approach to effect positive changes in depression, anxiety, stress, and automatic thoughts.

Takeaway

Blood type personality theory is a fascinating topic that can make for interesting discussions in any circle. That said, personalities aren’t always easy to understand. If you’re struggling to understand your own personality or the personality of someone you care about, a licensed therapist can help you sort things out. If you’re interested in learning more about yourself to improve, therapy is a great option. BetterHelp offers convenient and trustworthy therapy at an affordable price.

Frequently Asked Questions

Which blood type has the best personality?
What is the personality of type A blood?
Which blood type is smart?
What is the strongest blood type?
Which blood groups should not marry?
Is blood type A+ good?
Can O and A+ have babies?
What is the best blood type in Japan?
Which blood type cannot have babies?

Blood Type Personality Test: What is your blood type? Know interesting facts about your EQ, IQ, Career Choices based on your blood type

Blood Type Personality Test: In our previous personality tests, we explored what personality traits are revealed based on your love language, favorite number, favorite color, nose shape, foot shape, finger length, standing position, sleeping position, sitting position, favorite coffee, walking style, and more. Today, we are back with another personality test that reveals your intelligence level (IQ) based on your blood group type. The scientific name for the study of personality based on blood type is called Ketsueki-gata.

The study of an individual’s personality is based on four primary blood types: A, B, O, and AB blood type. The practice of studying one’s personality or IQ based on their blood type is quite famous in Japan.

What does your blood group tell about your personality?

Blood Type Personality Test

Blood Type A Personality

Blood Type A PersonalityIf your blood type is A, then you are creative, clever, cooperative, and passionate. You are a cautious person when it comes to decision-making. You are good at multi-tasking. You are well-organized and prefer tidiness and things at their designated place. You prefer to be a perfectionist, attentive, and consistent at whatever you do. People with blood type A are found to be more emotionally intelligent. You are more likely to take into consideration the societal rules and maintain etiquette. You are least likely to indulge in haphazard actions. Though you can at times be stubborn, obsessive, overly sensitive, pessimistic, and easily stressed out. You can also be quite conceited in your thoughts and actions. You usually keep your feelings and thoughts to yourself. You open up to people only those who trust a lot.

A+ Blood Group Personality Traits:

Pros: Excellent leader, Work in unity, Trustworthy, Intelligent/ Cons: Temperamental, and Targets of criticism.

A- Blood Group Personality Traits:

Pros: Hardworking, Persistent, Good Planner, Strong-willed/ Cons: Quick to lose temper, and Can be easily swayed.

Career choices: Economist, Librarian, Accountant, Graphic Designer, etc.

Also Read: Know 5 Body Language Gestures That Leave Bad Impression

Blood Type B Personality

Blood Type B PersonalityIf your blood type is B, then you are passionate, creative, strong, and active. You are cheerful, adventurous, open to new experiences, unconventional, and relaxed. As per studies, your blood type has the fastest brain. You have an active imagination. You have a sharp memory. You are most likely to be very good at subjects such as mathematics and science. You will approach things or wrap up tasks at your own pace. However, at times you can be irresponsible, reckless, immature, unpredictable, erratic, lazy, and uncooperative. You hate taking orders. You can also get fixated on impractical or unachievable goals due to your negative trait of not able to let go of things.

B+ Blood Group Personality Traits:

Pros: Emotional, Helpful, Gives importance to relationships, beautiful, smart, high IQ/ Cons: Quick to lose temper, erratic, irresponsible.

B- Blood Group Personality Traits:

Pros: Hardworking, smart, strong-willed, achiever/ Cons: Can be selfish at times, and not much helpful.

Career choices: Journalist, Artist, Business Owner, Consultants, Entrepreneur, Musician, etc.

Also Read: Personality Test: Your Favorite Number Reveals These Personality Traits

Blood Type O Personality

Blood Type O PersonalityIf your blood type is O, then you are a go-getter, daring, social butterfly, cheerful, confident, determined, resilient, intuitive, and strong-willed. You are also quite generous and helpful. You prefer to have a clear consciousness. You usually keep really high standards and big goals for yourself. You work to always find a way to achieve your goals. You could also have excellent leadership qualities. You do not however concern yourself with little or petty things. You are focused on the big picture. You tend to see the bright side in every situation. If someone were to ask you if the glass is half empty, you outlook would be glass is half filled. Your carefree attitude at times makes you look self-centered. However, upon knowing you, one understands that you are simply a calm, independent, peaceful, devoted to your growth kind of person. However, when you are feeling low or negative, you could showcase traits of coldness, unpredictability, arrogance, etc.

O+ Blood Group Personality Traits:

Pros: Helpful, Clear consciousness, social, optimistic/ Cons: Not very open to new experiences and can be self-centered.

O- Blood Group Personality Traits:

Pros: Optimistic, Determined, resilient, intuitive, strong-willed/ Cons: Unpredictable, and self-centered.

Career choices: CEO, Politician, Actress, Models, Public Speaker, etc.

Blood Type AB Personality

If your blood type is AB, then you are a diplomatic, adaptable, mysterious, charismatic, eccentric, analytical, logical, outgoing yet introverted kind of individual. You have a rational approach to things. Though, you try to keep an empathetic approach when dealing with people. Personality studies have noted that you could also have a trait of duality or double-faced and due to this, it is quite easy for you to get lost in your thoughts. The negative traits of blood type AB personality can be complicated, forgetful, impatient, irresponsible, critical, aloof, indecisive, and discriminating. As per blood typing for personality studies, it has been noted that people with blood type AB personality usually harbor a mixture of personality traits of blood type A and blood type B personalities.

AB+ Blood Group Personality Traits:

Pros: Caring, Reserved, Intelligent, charismatic/ Cons: Hard to be convinced, stubborn, rigid.

AB- Blood Group Personality Traits:

Pros: High IQ, Active brain, Lives with ‘Ignorance is Bliss’ attitude/ Cons: Trust issues and Can be stubborn.

Career choices: Teacher, Lawyer, Social Worker, Counsellors, Healthcare, etc.

Also Read: Personality Test: Your Love Language Reveals These Personality Traits

Did you enjoy reading about your blood type personality traits?

One should note that each one of us is unique. Our personalities are composed of different qualities and behavioral aspects based on our upbringing, societal conditioning, and our individual mindsets. To recap, the blood type personality theory is quite popular in Japanese culture where in many aspects of their lives are influenced by their blood type. Men and women use blood type personality test as a way of gauging relationship compatibility with a potential or current partner. Blood type influences job interviews, marriages and the reputation of individuals in society. Businesses in Japan also sell products catered to specific blood types and sports training is developed specifically for each blood type. As much as it is a rave in the pseudoscience community, it is also a great psychological conversation starter among people.

Blood Type Personality Test: In a Summary

Blood Type A

Blood Type B

Blood Type AB

Blood Type O

Creative, Sensible, Earnest, Stubborn

Passionate, Active, Selfish, Irresponsible

Controlled, Critical, Rational, Indecisive

Cold, Confident, Strong, Unpredictable

Tell us in comments section: What is your blood type?

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The blood type personality theory[1] is a pseudoscientific belief prevalent in Japan and South Korea, which states that a person’s blood group system is predictive of a person’s personality, temperament, and compatibility with others.[2] The theory is generally considered a superstition by the scientific community.

Blood type horoscope cards in Japan

One of the reasons Japan developed the blood type personality indicator theory was in reaction to a claim from German scientist Emil von Dungern, that Blood type B people were inferior.[3] The popular belief originates with publications by Masahiko Nomi in the 1970s.

Although some medical hypotheses have been proposed in support of blood type personality theory,[4] the scientific community generally dismisses blood type personality theories as superstition or pseudoscience because of lack of evidence or testable criteria.[2][5][6] Although research into the causal link between blood type and personality is limited, the majority of modern studies do not demonstrate any statistically significant association between the two.[7][8][9][10] Some studies suggest that there is a statistically significant relationship between blood type and personality, although it is unclear if this is simply due to a self-fulfilling prophecy.[11][12][13]

OverviewEdit

According to popular belief, with type A blood are friendly and kind, people with type B are spontaneous and creative, and people with type O are confident and aggressive. In a logical extension of this system, those with type AB are a mix of stereotypical A and B traits.[14]

HistoryEdit

Machine offering blood-type based fortunes

The idea that personality traits were inherited through the blood dates as far back as Aristotle.[15] Hippocrates also sought to link personality biologically, linking traits with the four bodily humors – sanguine, phlegmatic, choleric, and melancholic.[15]

In 1926, Rin Hirano and Tomita Yashima published the article «Blood Type Biological Related» in the Army Medical Journal. It was seen to be a non-statistical and unscientific report motivated by racism.[citation needed]

Takeji FurukawaEdit

In 1927, Takeji Furukawa, a professor at Tokyo Women’s Teacher’s School, published his paper «The Study of Temperament Through Blood Type» in the scholarly journal Psychological Research. The idea quickly took off with the Japanese public despite Furukawa’s lack of credentials, and the militarist government of the time commissioned a study aimed at breeding ideal soldiers.[2] The study used ten to twenty people for the investigation, thereby failing to meet the statistical requirements for generalizing the results to the wider population.[citation needed]

On the other hand, in 1934, Fisher announced the chi-squared test, which is very popular at present, for the first time. Several scholars said that they found statistically significant differences in analyzing Japanese work conducted at that time.[16]

In another study, Furukawa compared the distribution of blood types among two ethnic groups: the Formosans in Taiwan and the Ainu of Hokkaidō. His motivation for the study appears to have come from a political incident:[17] After the Japanese occupation of Taiwan following Japan’s invasion of China in 1895, the inhabitants tenaciously resisted their occupiers. Insurgencies in 1930 and 1931 resulted in the deaths of hundreds of Japanese settlers.[17]

The purpose of Furukawa’s studies was to «penetrate the essence of the racial traits of the Taiwanese, who recently revolted and behaved so cruelly.» Based on a finding that 41.2% of Taiwanese samples had type O blood, Furukawa assumed that the Taiwanese rebelliousness was genetic. His reasoning was supported by the fact that among the Ainu, whose temperament was characterized as submissive, only 23.8% is type O. In conclusion, Furukawa suggested that the Japanese should increase intermarriage with the Taiwanese to reduce the number of Taiwanese with type O blood.[17]

Masahiko NomiEdit

Interest in the theory was revived in the 1970s with a book by Masahiko Nomi, a journalist with no medical background (he graduated from the engineering department of the University of Tokyo). Few Japanese psychologists criticized him at that time,[18] so he continued to demonstrate statistically significant data in various fields and published several books with these results.[19] Later after his death in 1981, Masahiko Nomi’s work was said to be largely uncontrolled and anecdotal, and the methodology of his conclusions was unclear.[20] Because of this, he was heavily criticized by the Japanese psychological community, although his books remain popular.[20] His son, Toshitaka Nomi, continued to promote the theory with a series of books and by running the Institute of Blood Type Humanics.[21] He later established the Human Science ABO Center for further research and publication in 2004.

Background and criticismEdit

CriticismEdit

Kengo Nawata, a Japanese social psychologist, statistically analyzed three data sets of over 10,000 Japanese and American people in total.[10] However, 65 of the 68 items yielded non-significant differences between blood types and the other three items showed relatively slight relationships. Therefore, the blood type explained only 0.3% of the whole differences of these data sets. This result suggests that blood type explained very little of people’s personalities. Nawata concluded that there is no relevance of blood type for personality.

Controversial statistically significant dataEdit

However, some academic researchers have shown several statistically significant data in Japan and Korea. Akira Sakamoto and Kenji Yamazaki, Japanese social psychologists, analyzed 32,347 samples of annual opinion polls from 1978 through 1988.[11][12] These results indicated that Japanese blood-typical stereotypes influenced their self-reported personalities – like a self-fulfilling prophecy.

Cosy Muto and Masahiro Nagashima et al. (Nagasaki University) conducted a supplementary survey of Yamazaki and Sakamoto in 2011.[13] They demonstrated that significant and the same difference in personalities between blood-types by using the same database as Samamoto and Yamazaki used. In the 1990s, the difference due to blood types was stabilized and variances became smaller. Then in the 2000s, the difference was statistically significant, too. However, the effect magnitude was extremely small, despite ‘significance’ in the statistical sense.

Another Japanese social psychologist, Shigeyuki Yamaoka (Shotoku University), announced results of his questionnaires, which were conducted in 1999 (1,300 subjects)[22] and 2006 (1,362 subjects),[23] In both cases, the subjects were university students, and only subjects with enough knowledge of and belief in the «blood-type diagnosis» showed meaningful differences. He concluded that these differences must be the influence of mass media, especially TV programs. Yamaoka later examined 6,660 samples from 1999 through 2009 in total and found the same result.[24]

On the other hand, there are opinions that the statistically meaningful differences according to the blood types are not explained only by beliefs, nor are they a self-fulfilling prophecy. In Japan, the penetration rate of blood-typical personality traits was investigated. Yoriko Watanabe, a Japanese psychologist (then Hokkaido University), chose «well-known» traits and found most traits were known to no more than half of Japanese (subjects were university students).[25] A Japanese writer, Masayuki Kanazawa, analyzed these blood-typical traits in combination with data from Yamaoka (1999)[22] that used the same items of Watanabe’s penetration survey.[25] If blood-typical differences are caused by penetration (or their self-recognition), the rate of differences of a trait is proportional to the rate of its penetration. However, Kanazawa was not able to discover any association with blood-type differences and penetration rates.[26] This result raises doubt about the role of beliefs and self-fulfilling prophecy.

Most reports that demonstrated statistical correlation attribute differences to a self-fulfilling prophecy. However, no study directly proved the existence of «self-fulfillment». Therefore, the opinions of researchers are varied at present:

  1. Whether there is a statistical correlation or not;
  2. Whether any statistical correlations are superficial, being caused by subjects’ self-fulfilling prophecy, or if they are truly caused by the blood type.

In a 2021 Japanese study, ANOVA results of a 6,000-population large-scale survey showed that respondents displayed the personality traits corresponding to their own blood type more strongly than respondents who had different blood types did. This finding was consistent across all traits, and all differences were statistically significant. The same differences in scores were found in the groups who reported no blood type personality knowledge, although the values were smaller.[27]

Blood-type personality and the five-factor modelEdit

The five-factor model tests were carried out in several countries, including Japan, Korea, and Taiwan, after the year 2000. These tests were intended to digitize self-ratings of the «big five» personality traits. It was expected that differences in self-reported personalities (a self-fulfilling prophecy) would be detected from the subject who believed in blood-typical stereotypes. As a result, researchers found no meaningful statistical difference.[7][8][9][28][29]

So Ho Cho, a Korean psychologist (Yonsei University), and the others carried out a questionnaire about blood-typical items to subjects and discovered statistical differences as expected.[28] However, the difference was not found when the five-factor model for big five personality traits was administered to the same subjects. Another Korean researcher Sohn (Yonsei University) re-analyzed Cho’s data.[30] He found that several independent items of the big five personality test detected differences according to each blood-typical stereotype. However, these differences became extinct in the process of plural items being gathered to five factors (big five). If these results are correct, the five-factor model test cannot detect differences between the blood types – if such a causal link did indeed exist.[11][12][22][23][24][31]

In 2014, a Korean matchmaking company 듀오 Duo conducted a research survey closely examined 3,000 couples and found that blood type had no significant impact on the possibility of a couple getting married.[32]

In 2017, a meta-analysis of studies, using the Big Five personality test, involving 260,861 subjects found that six genes affected human personality.[33] However, the coefficient of determination was as low as 0.04%. This is usually considered to be an error.

Studies of blood distribution in various fieldsEdit

In order to avoid the influence of «contamination by knowledge», a Japanese psychologist group published a series of studies, but no significant differences were found except for Japanese prime ministers.[34][35][36][37] Later, it was reported that significant differences were found not only for prime ministers, but also for foreign ministers, education ministers, professional baseball hitters, and soccer players in Japan.[38]

Brain waves and light topographyEdit

Kim and Yi (Seoul University of Venture & Information) measured the brain waves of 4,636 adults. They reported that type O people were most stress-resistant.[39] Moreover, an experiment using light topography instruments by Munetaka Haida (Tokai University School of Medicine) suggests the possibility that activated parts of the human brain are different according to blood types. i.e. type A’s left brain is superior to the right, while type B’s right brain is superior.[40]

PopularityEdit

In Japan, discussion of blood types is widely popular in women’s magazines as a way of gauging relationship compatibility with a potential or current partner. Morning television shows feature blood type horoscopes, and similar horoscopes are published daily in newspapers. The blood types of celebrities are listed in their infoboxes on Japanese Wikipedia.[41] A series of four books that describe people’s character by blood type ranked third, fourth, fifth, and ninth on a list of best-selling books in Japan in 2008 compiled by Tohan Corporation.[42]

No less than two-thirds of people in several East Asian countries and areas, such as Japan, Korea, and Taiwan, believe in the association between blood types and personality.[43]

Furthermore, according to one Japanese survey, more than half of Japanese people are fond of talking about blood type and personality.[44] The research also says that people in Japan like blood-typical personality diagnosis and 1. talk about it with proper knowledge, 2. believe some relationships exist between blood type and personality, 3. feel its traits apply to themselves to a certain degree. The results of the two other surveys are the same.[45]

Although there is no proven correlation between blood type and personality, it remains popular with the many matchmaking services that cater to blood type. In this way, it is similar to the use of astrological signs, which are also popular in Japan. Asking one’s blood type is common in Japan, and people are often surprised when a non-Japanese does not know their blood type.[46]

It is common among anime and manga authors to mention their characters’ blood types and to give their characters blood types to match their personalities.[47] Some video game characters have known blood types. Also, it is common for video game series to allow for blood type as an option in their creation modes.[47]

After then-Reconstruction Minister Ryu Matsumoto’s abrasive comments towards the governors of Iwate and Miyagi[48] forced him to step down from his post, he partially blamed his behavior on his blood type, saying «My blood is type B, which means I can be irritable and impetuous, and my intentions don’t always come across.»[49]

Blood types are important in South Korea as well. The Korean webcomic A Simple Thinking About Blood Type depicts the stereotypes of each blood type and has been adapted as a short anime series in Japan as Ketsuekigata-kun! in 2013 and 2015.

DiscriminationEdit

Blood type harassment, called bura-hara (wasei-eigo: a portmanteau of blood and harassment), has been blamed for bullying of children in playgrounds, loss of job opportunities, and ending of happy relationships.[50]

Many people in Japan and Korea have been discriminated against because of their blood type. Employers ask blood types during interviews despite the warnings they have been given. Children at schools have been split up according to their blood type. The national softball team has customized training to fit each player’s blood type. Companies have given work assignments according to their employee’s blood type.[51]

However, these episodes are thought to be more or less exaggerated – as well as horoscope addiction in Europe or the US, which is sometimes reported in Japan. No blood-type harassment trials have been reported, so far. In reality, most Japanese people do not think blood types determine their personalities, but rather affect them to some degree.[44][45]

See alsoEdit

  • Barnum effect
  • Blood type diet
  • Zodiac signs — Western equivalent using the positions of stars on a person’s birthday to indicate or predict their personality.

NotesEdit

  1. ^ Davis, Matt (25 March 2019). «What is the Japanese blood type theory of personality?». Big Think. Retrieved 19 July 2020.
  2. ^ a b c Yamaguchi, Mari (6 May 2005). «Myth about Japan blood types under attack». MediResource Inc. Archived from the original on 28 December 2009. Retrieved 29 December 2007.
  3. ^ Takeji Furukawa (1927), 血液型と気質 Blood Type and Temperament — in Europe, type A was more common than type B, while in Asia type B was more prevalent. Von Dungren claimed A people are superior to B people. Because Asia had more B people than some parts of Europe, the inference was that Asia was inferior (along with European B’s) A Japanese scholar, Takeji Furukawa opposed that idea and asserted that B persons were active while A persons were passive.
  4. ^ Tsuchimine, Shoko; Saruwatari, Junji; Kaneda, Ayako; Yasui-Furukori, Norio (2015). «ABO Blood Type and Personality Traits in Healthy Japanese Subjects». PLOS ONE. 10 (5): e0126983. Bibcode:2015PLoSO..1026983T. doi:10.1371/journal.pone.0126983. PMC 4433257. PMID 25978647.
  5. ^ «Dating by blood type in Japan». April 28, 2010 – via news.bbc.co.uk.
  6. ^ Nuwer, Rachel. «You are what you bleed: In Japan and other east Asian countries some believe blood type dictates personality». Scientific American. Retrieved 16 February 2011.
  7. ^ a b Cramer, K. M., & Imaike, E. (2002). Personality, blood type, and the five-factor model. Personality and individual differences, 32(4), 621–626.
  8. ^ a b Rogers, M., & Glendon, A. I. (2003). Blood type and personality. Personality and individual differences, 34(7), 1099–1112.
  9. ^ a b c Wu, K., Lindsted, K. D., & Lee, J. W. (2005). Blood type and the five factors of personality in Asia. Personality and individual differences, 38(4), 797–808.
  10. ^ a b Kengo Nawata (2014), No relationship between blood type and personality: Evidence from large-scale surveys in Japan and the US Archived 2021-12-17 at the Wayback Machine, The Japanese Journal of Psychology, 85(2), 148–156.
  11. ^ a b c Sakamoto, A., & Yamazaki, K. (2004), Blood-typical personality stereotypes and self-fulfilling prophecy: A natural experiment with time-series data of 1978–1988. Archived 2016-01-22 at the Wayback Machine, Progress in Asian Social Psychology, Vol. 4, 239–262.
  12. ^ a b c Yamazaki, K., & Sakamoto, A. (1992), 血液型ステレオタイプによる自己成就現象II-全国調査の時系列分析- The self-fulfillment phenomenon generated by blood-typical personality stereotypes: time-series analysis of nation-wide survey II, Paper presented at the 33rd annual convention of the Japanese society of social psychology. Tokyo (pp. 342–345).
  13. ^ a b Cosy Muto, Masahiro Nagashima et al. (2011), A Demonstrative and Critical Study on Pseudo-science for Scientific Literacy Construction at Teacher Education Course[permanent dead link], FY2011 Final Research Report from the Database of Grants-in-Aid for Scientific Research — neither exact number of samples nor years was specified in the report
  14. ^ https://bigthink.com/the-present/blood-type-personality/
  15. ^ a b Jon Geir Høyersten (1997). «From Homer to Pinel: The concept of personality from antiquity until 1800 AD». Nordic Journal of Psychiatry. 51 (5): 385–394. doi:10.3109/08039489709090734., cited in Rogers, Mary; Glendon, A. Ian (2002). «Blood Type and Personality». Personality and Individual Differences. 34 (7): 1099–1112. doi:10.1016/s0191-8869(02)00101-0 – via Elsevier.
  16. ^ e.g. Masao Omura (Nihon University) in «血液型と性格 Blood Type and Personality», Terumitsu Maekawa (Asia University) in «血液型人間学 Blood Type Humanics» and so on.
  17. ^ a b c Becker, Peter (Ed.); Yoji Nakatani (2006). «The Birth of Criminology in Modern Japan». Criminals and their Scientists: The History of Criminology in International Perspective (Publications of the German Historical Institute). Cambridge University Press. p. 294. ISBN 978-0521810128.
  18. ^ Toshinori Shirasa & Takuji Iguchi (1993), 血液型性格研究入門 血液型と性格は関係ないと言えるのか An introduction to Blood Type Personality Research – Can we say there is no relationship with blood type and personality?, pp. 209–212, 242–243. Virtually no papers nor books about blood type and personality was published from the Japanese psychological community before Masahiko Nomi’s death in 1981.
  19. ^ Masahiko Nomi analyzed various data by using statistical methods and found meaningful traits; the following are some of his works.
    • Blood Type Affinity Study 5/1974 – 20,000 samples analyzed in total
    • Blood Type Sports Study 10/1976 – 1,000 track-and-field athletes analyzed
    • Blood Type Essence 6/1977 – listed over 1,000 people (politicians, CEOs, artists, etc.)
    • Blood Type Politics Study 6/1978 – 2,000 politicians analyzed (all representatives of the national Diet, all governors, and all mayors)

  20. ^ a b D’Adamo, Peter J. (2002). The Eat Right for Your Type: Complete Blood Type Encyclopedia. Riverhead Trade. p. 28. ISBN 978-1573229203.
  21. ^ Evans, Ruth (4 November 2012). «Japan and blood types: Does it determine personality?». BBC News. Retrieved 5 November 2012.
  22. ^ a b c Shigeyuki Yamaoka (1999), 血液型ステレオタイプが生み出す血液型差別の研究 A Study on Blood Harassment Caused by Blood-typical Stereotypes, Paper presented at the 40th annual convention of the Japanese society of social psychology. Tokyo. For further information of this paper, confer to Shigeyuki Yamaoka (2001), ダメな大人にならないための心理学 A Psychology Book for not to Become a Useless Adult, pp. 35–73 ISBN 4892426652
  23. ^ a b Shigeyuki Yamaoka (2006), 血液型性格項目の自己認知に及ぼすTV番組視聴の影響 Influence of Watching TV programs to One’s Self-recognition of the Blood-type personality Items Paper presented at the 47th annual convention of the Japanese society of social psychology. Tokyo.
  24. ^ a b Shigeyuki Yamaoka (2009), 血液型性格判断の差別性と虚妄性(自主企画(2)) Segregation and falsehood of blood-type personality analysis[permanent dead link], self planning session (2) at the 18th annual convention of the Japanese society of personality psychology.
  25. ^ a b Watanabe, Y. (1994). 血液型ステレオタイプ形成におけるプロトタイプとイグゼンブラの役割 The roles of prototype and exemplar in the formation of the «blood type stereotype» Archived 2014-08-19 at the Wayback Machine. Japanese Journal of Social Psychology, 10–2, 77–86. She extracted 7 traits for each 4 blood types, 28 in total, which were common to three or more «blood type diagnosis» books. 20 items of all 28 showed less than 50% penetration (the average is 46.1%).
  26. ^ Masayuki Kanazawa (2014), 統計でわかる血液型人間学入門 An Introduction to Blood Type Humanics — Understanding by Statistics, Gentosha Runaissance ISBN 978-4779011092 pp. 16–36
  27. ^ Kanazawa, M. (2021). A Pilot Study Using AI for Psychology: ABO Blood Type and Personality Traits Archived 2021-04-07 at the Wayback Machine. American Journal of Intelligent Systems, 11(1), 7–12.
  28. ^ a b So Hyun Cho, Eun Kook M. Suh, Yoen Jung Ro (2005), Beliefs about Blood Types and Traits and Their Reflections in Self-reported Personality Archived 2016-03-03 at the Wayback Machine, Korean Journal of Social and Personality Psychology, 19(4), 37–47.
  29. ^ Yoshio Kubo, Yukiko Miyake (2011), 血液型と性格の関連についての調査的研究 Correlation between blood types and personalities Archived 2014-08-19 at the Wayback Machine Bulletin of Kibi International University (Department of Social Welfare), 21, 93–100.
  30. ^ Sung Il Ryu, Young Woo Sohn (2007), A Review of Sociocultural, Behavioral, Biochemical Analyses on ABO Blood-Groups Typology Archived 2022-02-27 at the Wayback Machine, The Korean Journal of Social and Personality Psychology
  31. ^ Masayuki Kanazawa (2018), Blood Type and Personality 3.0 – Reality Proved by 300,000 People and AI, CreateSpace ISBN 978-1986623810 pp. 119–122. This book analyzed 14 reports of the «Big Five» test and obtained no consistent result.
  32. ^ «What’s your blood type? What a small face! Odd Korean questions & compliments». Hyphe-Nated. Retrieved 11 September 2021.
  33. ^ Lo, Min-Tzu; Hinds, David; Tung, Joyce (2017). «Genome-wide analyses for personality traits identify six genomic loci and show correlations with psychiatric disorders». Nature Genetics. 49 (1): 152–156. doi:10.1038/ng.3736. PMC 5278898. PMID 27918536.
  34. ^ Ohmura, M., Ukiya, S., Fujita, S. (2013). «Is the «Blood Type Personality Theory» Reliable? (Part 30) I – Do Members of the House of Representatives Show Blood Type Characteristics?». Proceedings of the Annual Meeting of the Japan Association of Applied Psychology. 80: 61.{{cite journal}}: CS1 maint: uses authors parameter (link)
  35. ^ Ukiya, S., Ohmura, M., Fujita, S. (2013). «Is the «Blood Type Personality Theory» Reliable? (Part 30) II – Blood type distribution of Japanese and Korean celebrities». Proceedings of the Annual Meeting of the Japan Association of Applied Psychology. 80: 62.{{cite journal}}: CS1 maint: uses authors parameter (link)
  36. ^ Fujita, S., Ohmura, M., Ukiya, S. (2013). «Is the «Blood Type Personality Theory» Reliable? (Part 30) III – Can we see blood type traits in athletes?». Proceedings of the Annual Meeting of the Japan Association of Applied Psychology. 80: 63.{{cite journal}}: CS1 maint: uses authors parameter (link)
  37. ^ Ukiya, S., Ohmura, M., Fujita, S. (2014). «Is the «Blood Type Personality Theory» Reliable? (Part 31) – Blood types of Japanese sumo wrestlers». Proceedings of the Annual Meeting of the Japan Association of Applied Psychology. 81: 53.{{cite journal}}: CS1 maint: uses authors parameter (link)
  38. ^ Masayuki Kanazawa. (2021). «Linkage between ABO Blood Type and Occupation: Evidence from Japanese Politicians and Athletes». International Journal of Social Science Studies. 9 (5): 104–111. doi:10.11114/ijsss.v9i5.5282.{{cite journal}}: CS1 maint: uses authors parameter (link)
  39. ^ Choong-Shik Kim, Seon-Gyu Yi (2011), A Study on the effects of one’s blood type on emotional character and antistress of adults Archived 2016-03-03 at the Wayback Machine, Journal of the Korea Academia-Industrial cooperation Society, 12(6), 2554–2560. According to this article «meaningful difference had been revealed between the blood type and stress resistancy; type O rated higher scores in awareness and stress resistancy then other types. …»
  40. ^ Human Science ABO Center held the symposium «血液型を考える~ヒトABO式血液型遺伝子を理解する為に~ Think about Blood Type – Toward Understanding Human ABO Genes» in February, 2010 (Tokyo). The report (Japanese) including Haida’s presentation is here Archived 2014-09-08 at the Wayback Machine.
  41. ^ «Type Cast: The Japanese Fascination with Blood Types». Archived from the original on 2012-06-19. Retrieved 21 July 2012.
  42. ^ Blood Types – Do They Shape a Personality or Mere Stereotypes Archived 2015-11-17 at the Wayback Machine, Natsuko Fukue, The Japan Times, December 31, 2008
  43. ^ Many people of the East Asia believe the association with blood types and personality; Japan: 75% (NHK – Japan Broadcasting Corporation – opinion polls, 1986), Korea: 75% (Wow Korea, July 21, 2014), Taiwan: 66% (Wu et al.[9])
  44. ^ a b Reiko Yamashita (2008), 血液型性格判断はなぜすたれないのか why doesn’t blood type in Japanense culture detariorate? Archived August 26, 2014, at the Wayback Machine, Paper presented at the 48th annual convention of the Japanese society of social psychology.
  45. ^ a b The following are results of two Japanese surveys:
    • Yahoo! Research (December 25, 2008)『「血液型本」に関する調査』 A survey about «blood type books» – «My personality is appropriately expressed so that sympathized, convinced» (66%), «Can grasp my personality objectively with new discovery» (59%), «One of the means and the methods to express my personality» (50%), «Useful in acquaintances» (48%) and «Useful in love-affiliated things» (47%).
    • Yumiko Kamise, Yutaka Matsui (1996), 血液型ステレオタイプ変容の形 ―ステレオタイプ変容モデルの検証― Changing processes of stereotype on blood-groups, Japanese Journal of Social Psychology, 11–13, 170–179. – «blood-typical personality diagnosis is a fun» (83.6%), «I like blood-typical personality diagnosis» (61.5%).

  46. ^ In Japan, you are what your blood type is, Japan Today
  47. ^ a b Brenner, Robin E. (2007). Understanding manga and anime. Libraries Unlimited. p. 41. ISBN 978-1591583325.
  48. ^ Fukue, Natsuko (2011-07-05). «Matsumoto rips Tohoku governors». The Japan Times. Retrieved 2014-04-12.
  49. ^ Lies, Elaine (2011-07-06). «Blame it on my blood, disgraced Japan politician says». Reuters. Archived from the original on 2015-09-24. Retrieved 2017-06-30.
  50. ^ McCurry, Justin (4 December 2008). «Typecast – Japan’s obsession with blood groups». The Guardian. Retrieved 14 December 2012.
  51. ^ Yamaguchi, Mari (2009-02-01). «In Japan, Your Blood Type Says It All». Huffington Post. Retrieved 2014-04-12.

Further readingEdit

  • Toshitaka Nomi and Alexander Besher, You Are Your Blood Type: the biochemical key to unlocking the secrets of your personality. New York: Pocket Books, 1988. ISBN 0671633422
  • Peter Constantine What’s Your Type?: How Blood Types are the Keys to Unlocking Your Personality. 1997. Plume, ISBN 0452278023
  • Miller, Laura (1977). «People Types: Personality Classification in Japanese Women’s Magazines». The Journal of Popular Culture. 11 (2): 436–452.
  • Sakamoto, A.; Yamazaki, K. (2004). «Blood-typical personality stereotypes and self-fulfilling prophecy: A natural experiment with time-series data of 1978–1988» (PDF). Progress in Asian Social Psychology. 4: 239–262. Archived from the original (PDF) on 2016-01-22. Retrieved 2014-08-12.
  • Jun Kim, Beom; et al. (2007). «Blood-type Distribution». Physica A. 373 (1): 533–540. Bibcode:2007PhyA..373..533K. doi:10.1016/j.physa.2006.05.027.
  • Nawata, Kengo (2014). «No relationship between blood type and personality: Evidence from large-scale surveys in Japan and the US». The Japanese Journal of Psychology. 85 (2): 148–156. doi:10.4992/jjpsy.85.13016. PMID 25016835.

External linksEdit

  • Blood type and the five factors of personality in Asia
  • Japanese Blood Types
  • Human Science ABO Center
  • Website of Peter J. D’Adamo

A, B, O, or AB? Everyone has a revealing blood type personality, but which one are you? Simply answer 10 quiz questions and we’ll reveal your true blood type personality! Your blood might have more influence than you think….

START THE QUIZ!

Question 1/10

Do you think you are more of an introvert or an extrovert?

I’m more of an introvert.

I’m more of an extrovert.

I think I’m an ambivert.

It depends on the situation.

Question 2/10

What do you think others like most about you?

I’m easy to get along with.

I give great advice.

I’m funny.

I know what I want.

Question 3/10

How do you tend to relieve stress?

I meditate.

I go to the gym.

I eat a balanced diet.

I get enough sleep.

Question 4/10

What is your hobby?

Reading

Traveling

Watching TV

Gardening

Something else

Question 5/10

What class did you like most in school?

Question 6/10

Would you rather eat alone or sit with a group of strangers?

I’m just fine eating on my own.

I don’t mind either one.

I’d rather eat with a group of strangers.

It depends on the time of day.

Question 7/10

Which area of your life is going the best right now?

Career

Relationships

Finance

Housing

Question 8/10

Do you tend to procrastinate?

I’m a total procrastinator.

I try not to procrastinate.

I always get things done right away.

It depends on my mood.

Question 9/10

What do you think is your most dominant trait?

My compassion.

My openness.

My courage.

My practicality.

Question 10/10

Do you get jealous easily?

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