Isoko Hatano (Japanese: 波多野 勤子 Hatano Isoko; (1905-12-21)December 21, 1905 – (1978-09-15)September 15, 1978) was a Japanese developmental psychologist and writer. Her 1951 book, Shōnenki, was a national bestseller that was adapted into a feature film. She was awarded the Order of the Precious Crown in 1976. Source: Wikipedia (en)