This document provides an overview of the field of psychology. It discusses that psychology is the scientific study of behavior and mental processes. Some key topics covered include the various approaches in the history of psychology such as structuralism, functionalism, psychoanalytic, behavioral, cognitive; major figures that contributed to each approach like Wundt, James, Freud, Pavlov, Piaget; the goals of psychology including description, explanation, prediction, and influence; and the many subfields that modern psychology is divided into such as clinical, developmental, industrial/organizational, and forensic psychology.