ABSTRACT
In recent years, the term user-centered has been used to describe anything that is designed for operation and use by people. What exactly does it mean to be user-centered? It means that the research and development team must have both a knowledge and an understanding of human nature. Chapter 1 described the hardware/software, procedural and human elements that comprise a product. Each element is expected to perform a role in certain ways. Hardware and software performance can be specified and forecast. However, it is equally important to know what humans can and cannot do (and will or will not do). Two fields of knowledge, human behavior and physiology, provide the answer. Both serve as the basis for the development of products that are in fact human-centered.
