NATURE OF PSYCHOLOGY.1
Subject-matter of Psychology. We may define psychology as the science of the phenomena of consciousness, being careful to include consciousness wherever and in whatever stages it be found; or, if we emphasize, not so much the facts with which we deal, as the mode of our knowledge of these facts as the science of mind as we know it.
By "phenomena of consciousness" we mean happenings or events in consciousness, everything that belongs to our minds: sensations, impulses, acts of will, reasoning processes, etc.
The question of psychology is: "Is there an order of mental facts apart from the phenomena of the physical sciences and especially physiology?" This question is sometimes answered negatively. Psychology, we are told by the materialists, is properly a branch of physiology:____________________