Carl Stumpf (1848 -1936)
Carl Stumpf was a German philosopher and psychologist. He was a student of the phenomenologist, Franz Brentano, and of Hermann Lotze. He is known for his early and innovative research in the psychology of sound and music. He was appointed to head the commission that investigated Clever Hans, a horse that reputedly could count and do arithmetic (it couldn’t).
Carl Stumpf mentored a number of students who became famous in philosophy and psychology. They included Edmund Husserl, the founder of modern phenomenology, and Wolfgang Köhler and Kurt Koffka, the co-founders of Gestalt psychology.