Carl Stumpf (; 21 April 1848 – 25 December 1936) was a German philosopher, psychologist and musicologist. He is noted for founding the Berlin School of experimental psychology.

He studied with Franz Brentano at the University of Würzburg before receiving his doctorate at the University of Göttingen in 1868. He also tutored the modernist literature writer Robert Musil at the University of Berlin, and worked with Hermann Lotze, who is famous for his work in perception, at Göttingen. Stumpf is known for his work on the psychology of tones. He had an important influence on his students Wolfgang Köhler and Kurt Koffka who were instrumental in the founding of Gestalt psychology as well as Kurt Lewin, who was also a part of the Gestalt group and was key in the establishment of experimental social psychology in America.

Stumpf is considered one of the pioneers of comparative musicology and ethnomusicology, as documented in his study of the origins of human musical cognition The Origins of Music (1911). He held positions in the philosophy departments at the Universities of Göttingen, Würzburg, Prague, Munich and Halle, before obtaining a professorship at the University of Berlin.

Early life

Carl Stumpf was born in Wiesentheid, Franconia, in the Kingdom of Bavaria, to a prominent family. His father was the country court physician, and his immediate family included scientists and academicians, like his grandfather, who studied eighteenth-century French literature and the philosophers Kant and Schelling. Stumpf showed precocious musical talent as a child, learning the violin by the age of 7.

Education

Stumpf was sickly as a child so his early education was conducted at home with his grandfather as his tutor. He spent one semester studying aesthetics and one studying law. Then, in his third semester, he met Franz Brentano, who taught Stumpf to think logically and empirically. Brentano's lectures were also attended by Anton Marty, Carl van Endert, Ernst Commer, Ludwig Schütz, and Hermann Schell. Brentano also encouraged Stumpf to take courses on the natural sciences because he considered both the substance and methods of science important to philosophy. There he was awarded a doctorate in 1868.

In 1869, he entered a seminary, intending to be a Catholic priest. However, he disagreed with the dogma of the papal infallibility so he returned to the University of Göttingen for his doctorate. He argued that the status of space is Teilvorstellung or a "partial presentation", one that must be experienced as part of a broader presentation.

Sensational phenomena

In 1903 and 1904, Stumpf was involved in two well-publicized debunking episodes related to sensational phenomena. First, an engineer from Prague claimed to have invented a machine that could change photographs of sound waves into sound. Stumpf, after attending a demonstration, wrote an article challenging its legitimacy, causing it to never be heard about again.