My summary from Mr. Masahiko NOMI's book "Ketsueki-gata Josei Hakusho" (Blood-Type Women White Paper).
Personality differences of men and women is almost nonexistent. However, Type O people are strongly conscious of their sex. Even a boyish type-O woman thinks she is a woman after all. On the contrary, if a type-AB person seems to manly or feminine, it seldom considers sex distinction.
The strong consciousness of sex is the indication of the natural nature of Type O. However, Type O personality is *not* primitive but natural. In other words, natural means humane. As the blood type becomes type A, type B and type AB, apart from the nature a little by a little and from the human.
A type-O woman sometimes does not seem to be feminine. Natural differences of personality between men and women are small, but social differences are large.
A type-O person gives priority to its life and actions, first of all. Various personality traits of type O are born from there.
Surprisingly strong reality is of type O. O gropes the most advantageous action to exist, distinguishes pluses and minuses swiftly, is a good decision maker.
Purpose-orientation is O's nature and O considers the purpose on real life intensively. For example, a purpose to get occupations and jobs, a purpose to seek the opposite sex, especially a purpose to hold the power. A type-O person doesn't show the zeal for the target isolated from real life.
When such purpose does not exist, a type-O person gets into awfully unstable. If the situation continues so long, it becomes like a cat in a sunny place.
The romantic expression of type O and the tendency to prefer such things seems to be contradictory to reality at first glance, but in reality, it is making an effect driving realistic behavior. Type-O person has the dual personality; romantic and realistic. But this is very superficial view. A romantic thinking usually doesn't become to an action.
Shigeyuki Yamaoka (2001), A Psychology Book for not to Become a Useless Adult
Self report of personality from 1 (strongly disagree) to 5 (strongly agree); Subjects are 649 university students who love blood-typical topics.
Strongly purpose oriented
👍Person of action. Competent and skilled. Strong-willed.
👎Forcibly. Unevenness at work. Choose any means.
👍Passionate. affectionate. Direct feelings. Aggressiveness.
👎Gluttony. Strong lust, monopoly, selfishness.
Sensitive to power relationships
👎Power oriented. careerism. (Conversely) abject.
Intensive gambler's characteristics
👍Guts. Hate losing. Throb. Decision.
👎Struggle right away. Distract. Not sticky.
Hate to be kept down
👍Independence. Autonomy. Unyielding. Self-respecting.
👎Quarrel fast. Rebellious. Not obedient but stubborn.
👍Dreams and ideals. Poetic. Rich in emotion.
👎Childish. Lip service. Cheap.
Realistic action and judgment
👍Good Practical and steadfast. Vitality. View of the big picture.
👎Calculating. Shrewd. Hireling.
Straight way of thinking
👍Frank. Nice. Excellent intuition.
👎Simple-minded. Rough and short. Arbitrary decision.
Making and awareness of friends
👍Warm. Take care of others. Friendship. Family-oriented.
👎Factional. Only family matters. Favoritism.
Love with physical intimacy
👍Humanity. Friendly. Openness.
👎Clingy. Insistent. Interfere with others.
Vigilant to outside peers
👍Careful. Not taken in. Tight lipped
👎Discrimination. Excessive self-defense. Nervous.
Love unique things
👍Respect individuality. Originality. Don't follow the crowd
👎Eccentric. Crazy. Picky.
Self-assertion and self-expression
👍Expressive. Clear and honest. Strong willed. Leadership.
👎Pushy. Too much self-advertisement. One word too many.
Skillful use of words
👍Logical. Persuasive. The story is easy to understand.
👎Glib talker. Argumentative. Disagreement of speech.
Have principles in action
👍Have a belief. Clear action. Don't sway.
👎Dogmatic. Pushy. Carriage horse.
Have a principle of conduct
👍Principled. Clear action. Not surreptitious.
👎Dogmatic. Intrusive. Work like a horse.
No emotion left
👍Simple. Big-hearted. Tolerant. Broad-minded.
👎Perfunctory. Insensitive to other's feelings.
Strong awareness of society
👍High political awareness. Take care of human relationships.
👎Nervous to people's likes and dislikes. Too political.
Dec. 8, 2019
I haven't really seen all the above characteristics. But fellow feelings, consciousness of sex distinction, generosity, reality and purpose-orientation are the vivid characteristics.