Leveraging extensive research and experience from the various fields of applied psychology, this book provides valuable insights for improving people related decisions in the workplace. It clearly describes how people differ on ability, personality, and behavior dimensions and how to apply this information to the business areas of personnel, training, technology insertion and design, and systems engineering. The author draws from many everyday system examples to make the information easy to digest. This is an exceptional reader and reference book for business managers and those new to the field of applied psychology.