Barbershop music countertenor, the baritone resembles the Heldentenor or lyric baritone in range and a tenor in tessitura, and the lead generally corresponds to the tenor of classical repertoire, with some singers possessing a tessitura more similar to that of a high baritone. Barbershop singing is performed both by men's and women's groups; the elements of the barbershop style and the names of the voice parts are the same for both. The defining characteristic of the barbershop style is the "ringing" chord, one in which certain overtones of the four voices reinforce each other, sometimes so strongly that the overtone is perceived
How People Learn How People Learn How People Learn is the title of an educational psychology book edited by John D. Bransford, Ann L. Brown, and Rodney R. Cocking and published by the United States National Academy of Sciences' National Academies Press. The committee on "How People Learn" also wrote "How Students Learn: History, Mathematics, and Science in the Classroom" as a follow-up. An updated edition "How People Learn II" was released in October 2018. The book draws the following conclusions, among others: Learners and Learning: Thus, the debate within education between advocates of deep conceptual understanding and advocates of broad factual understanding