Some examples of psychological manipulation can be found in Chua's story. In her book, Battle Hymn of the Tiger Mother, Chua, a Chinese-American, wrote about her constant battles with her two daughters as she pushed them to excel in school, piano and violin. She wrote that any grade less than an A was unacceptable and sleepovers or play dates were not allowed. When her daughter refused to practice the piano, she called her "lazy, cowardly, self-indulgent and pathetic."