by processing. Type B people are boiled (and seasoned) vegetables. As well as type A, common properties of boiled vegetables comes out. In addition, variety of personality decreases like type A to some extent compared to fresh vegetables. Type AB people are "boiled pickles"—called "fukujinzuke (福神漬)" in Japan. Of course, variety of personality is the poorest among four blood types. Therefore, he often said that blood type can explain only "a quarter" of human personality. Personality comes from both nature (blood type) and nurture. As each vegetable has its own nature, half-and-half each makes a quarter. Books Understanding Affinity by Blood Type 血液型でわかる相性 伸ばす相手、こわす相手 9/1971 Blood Type Humanics 血液型人間学 あなたを幸せにする性格分析 サンケイ新聞社出版局 8/1973 Blood Type Affinity Study 血液型愛情学 愛と性のドラマ・20,000人の証言 サンケイ新聞社出版局 5/1974 - 20,000 samples analyzed in total Blood Type Sports Study 血液型スポーツ学 陸上競技編 講談社 10/1976 - 1,000 track-and-field athletes analyzed Blood Type Utilization Study 血液型活用学 自分を生かし、人間関係をよくする本 サンケイ新聞社出版局 5/1976 Blood Type Essence 血液型エッセンス 性格と人間関係の実用百科 サンケイ出版 6/1977 - list over 1,000 people (politicians, CEOs, artists etc.) Blood Type Politics Study 血液型政治学 政治を動かす衝撃の事実! サンケイ出版 6/1978 - 2,000 politicians analyzed (all representatives of the national Diet, all governors and all mayors) References External links Human Science ABO Center Japanese non-fiction writers People from Kanazawa, Ishikawa University of Tokyo alumni 1925 births 1981 deaths 20th-century non-fiction writers