This document provides an introduction to the subject of psychology. It defines psychology as the scientific study of behavior and mental processes in humans and animals. The goals of psychology are described as observation, description, understanding, explanation, prediction, and control of behavior and mental processes. Some popular areas of psychology discussed include clinical, industrial/organizational, health, consumer, environmental, sport, and forensic psychology. The document emphasizes that psychology uses the scientific method to study behavior and mental processes objectively and reliably.