The document discusses the beginnings of psychology as a scientific field in the late 19th century. It outlines several important figures and theories that emerged during this time, including Wilhelm Wundt establishing the first psychology laboratory in 1875 and making psychology an independent science from philosophy. Sigmund Freud introduced psychoanalysis and his theories of the unconscious mind, psychosexual development, and the id, ego, and superego. Ivan Pavlov conducted experiments demonstrating classical conditioning. The document also discusses Karl Bühler's contributions to gestalt psychology and the universities of Leipzig, Würzburg, and Vienna that were important centers for early work in experimental psychology.