Hence, wherever we meet with vital phenomena that present the two aspects, physical and psychical there naturally arises a question as to the relations in which these aspects stand to each other.

In 1879 Wundt founded the first formal laboratory for psychological research at the University of Leipzig. He is widely regarded as the "father of experimental psychology". Wilhelm Maximilian Wundt (16 August 1832 – 31 August 1920) was a German physician psychologist physiologist philosopher and professor known today as one of the founding figures of modern psychology.