Karl Bühler

Karl Ludwig Bühler (May 27, 1879, Meckesheim - October 24, 1963, Los Angeles) was a German psychologist known for his work about gestalt and his Organon model which influenced Friedemann Schulz von Thuns four sides model. He was the husband of well-known Jewish psychologist Charlotte Bühler née Malachowski (1893, Berlin - 1974).