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Type A people's thinking and understanding of things are less conciliatory. Even for some neutral things, Type A people can distinguish it by their own standards, and some even seem far-fetched. They also appear more rigid and lack accommodating. Japan's men's volleyball coach and Type A Yasuhiro Matsudaira once described such a thing in an article: He said that an air hostess who was sitting in the same seat when he returned home also took the flight as a passenger. But what caused Matsuhira Yasuhiro's dissatisfaction was that this lady was still wearing a uniform even though she was not on the job. Therefore, he angrily wrote at the end of the article: "There are no rules." In his opinion, uniforms can only be worn for work, otherwise they should be changed. This distinct way of thinking is not uncommon among Type A people.

According to another investigation, it was found that 2/3 of the judges of sumo wrestling are Type A, which is also a professional reflection of the black and white thinking characteristics of Type A people. In addition, Type A people also have a tendency to be cautious and to draw conclusions too early in their thinking.

It is precisely because the thinking style of A-type people is more practical, stable, and less mysterious, so they can often win people's trust with a solid and reliable image. However, because Type A people’s thinking has a gradual nature and attaches great importance to the thinking and expression process itself, it often takes a long time for them to reach a conclusion from thinking. In other words, they react slowly. Because they are not good at rapid thinking, they refuse to draw conclusions without careful analysis, so they should not behave like others. When making explanations and then directly drawing conclusions on things, type A people often find it difficult to accept, and laugh at the other person because they think the other party is not well-founded and cannot stand up to scrutiny. When the other party's conclusion conflicts with the standards of good and evil of type A people, type A people may also be disgusted.

From an emotional point of view, Type A people’s feelings are more intense and rich, but in actual life, about 70% of Type A people wrap their feelings, desires, and opinions in a self-inhibiting shell. Easily exposed. Therefore, they often win evaluations of stability, kindness, caution, and tolerance. In fact, the degree of emotional irritation in Type A people is hard to detect even for their relatives and friends, unless the degree of emotional irritation breaks the limit of type A people's self-inhibition.

In essence, Type A people are no less competitive than Type O people, but they don't like to be sharp. Compared with O-type people, A-type people's aggressiveness is often full of idealism. Even when they know that there is no hope for victory, they may stick to it and refuse to give up or admit defeat. At the end of the Second World War, the German and Japanese soldiers and civilians' style of "struggling with beasts and fighting" is the best embodiment of this character. If you are an O-type person, you can't help but find yourself in trouble. Once you find that you have gone, you will resolutely give up your efforts, change your course, and find another way out. The tenacious style of Type A people is actually a reflection of a strong sense of mission, but it does not seem to be suitable for this flexible and fickle society.

In addition, unlike Type O people, Type O people tend to have a near mental breakdown when they are hit by an accident. But Type A people are not. Although they often feel pessimistic and uneasy about the unforeseen future, once the real blows come, Type A people can suddenly rise from uneasy emotions, become calm, calm, and energetic. Then rose up high. As a result, they won the title of "power in adversity". For example, many Type A athletes usually have stage fright, but in major competitions they can become calm and get good results. This is a reflection of whether Type A people are strong or not. In addition, when the health and life of Type A people are threatened, they will also have almost neurotic behavior, but when they realize that this is irreversible, they will face it in a realistic manner and appear more open-minded. ( Blood type and personality http:///xx/)

In short, in the view of Type A people, all personnel should meet a certain etiquette or standard, and conform to this etiquette or standard as a necessary means to maintain the stability of social relations and social order. Therefore, in a sense, Type A people are those who have contributed to maintaining a certain social order.