The psychology of human-computer interaction

Published in 1983, The Psychology of Human-Computer Interaction serves as a foundational text in the field of human-computer interaction (HCI). Written by Stuart K. Card, Thomas P. Moran, and Allen Newell, the work emerged from their research at Xerox PARC during the late 1970s and early 1980s. The authors sought to transition HCI from a domain of subjective intuition toward a rigorous, empirical engineering discipline by applying cognitive psychology models to user interface design.

The book is best known for introducing the Model Human Processor, a theoretical framework that treats the human user like an information-processing system with specific memory and motor constraints. By quantifying human performance through experimental data and predictive models, the authors provided developers with a systematic way to evaluate interface efficiency. While initially regarded as dense and academic, it is widely recognized today as a seminal contribution that bridged the gap between behavioral science and computer systems design.