What Psychology Is

Psychology is the scientific study of the mind, while philosophy is a combined study of reality, knowledge, thinking, morals, and essences. Analyzing philosophy almost always require one to follow rational inquiry, a set method to find truth. Also, philosophy has been a tradition for thousands of years in various cultures, while psychology was only a recent development in the west.

In the long run, psychology can supplement philosophy, and vice-versa. Psychology can both clarify existing philosophical ideas, and correct unintentional errors in theories. Terms you are familiar with, such as ego, superego, id, and stream of consciousness are ultimately terms of modern psychology.