Engineering psychology is the scientific study of how humans interact with technology and their environments. It is a multidisciplinary discipline that combines principles of psychology, engineering, and design. There are several synonyms that describe engineering psychology, including human factors engineering, ergonomics, and cognitive engineering. Human factors engineering focuses on the design of products and systems that are safe and easy to use. Ergonomics considers the physical and cognitive capabilities of users, and cognitive engineering deals with the analysis and design of complex systems that involve human decision-making. Other related fields include user experience design, user-centered design, and human-computer interaction. Ultimately, engineering psychology seeks to enhance human performance, safety, and well-being in the technological world.