Human factors engineering

Human factors engineering
Name	Human factors engineering
Field	Ergonomics
Related	Cognitive psychology; Industrial design; Systems engineering

Contents

Human factors engineering is an interdisciplinary field focused on optimizing interactions among humans, machines, environments, and organizations to improve performance, safety, and user satisfaction. It integrates knowledge from disciplines such as Cognitive psychology, Industrial design, Systems engineering, Biomechanics, Occupational safety and health administration, and Human–computer interaction to shape products, systems, and workplaces. Practitioners apply empirical methods from Stanford University, Massachusetts Institute of Technology, University of Michigan, Georgia Institute of Technology, and University of Cambridge to address real-world problems encountered in contexts like NASA, Boeing, General Motors, Royal Air Force, and National Aeronautics and Space Administration projects.

Overview and scope

Origins are linked to industrial practices at firms like Harvard University-affiliated laboratories and wartime programs involving Royal Air Force, United States Army Air Forces, Admiralty research, and companies such as Westinghouse and General Electric. Key historical figures include Frederick Winslow Taylor in time-and-motion studies, Fitts' law researchers exemplified by Paul Fitts, and cognitive pioneers at MIT and Princeton University who influenced later work at Bell Labs and RAND Corporation. Postwar expansion saw institutionalization at University of Michigan, University of Illinois Urbana-Champaign, and University College London and adoption by aerospace projects at NASA and Boeing and by automobile firms like Ford Motor Company and Toyota.

Core principles emphasize fit between user capabilities and system demands, drawing on models by Donald Norman, James Reason, Jill Hollander, Alphonse Chapanis, and frameworks used at National Transportation Safety Board investigations. Methods include task analysis influenced by John Dewey, human reliability analysis employed in Three Mile Island studies, usability testing common at Microsoft and Apple Inc., and participatory design practices used by IKEA and Philips. Safety-critical methods integrate approaches from Nuclear Regulatory Commission, International Civil Aviation Organization, Joint Commission, and European Medicines Agency.

Human-centered design processes championed by IDEO, Design Council, Stanford d.school, Cooper, and Don Norman prioritize iterative prototyping, ethnographic fieldwork at sites like NASA Johnson Space Center and CERN, and accessibility standards advocated by United Nations agencies and World Wide Web Consortium. Usability metrics and interfaces developed by teams at Google, Facebook, Amazon (company), and IBM use techniques from Jakob Nielsen and Ben Shneiderman to reduce cognitive load and improve learnability in consumer electronics from Sony and Samsung.

Measurement techniques include psychophysical testing derived from work at University College London and University of Oxford, biometric monitoring used in studies at Stanford University and MIT Media Lab, and simulation modeling applied by Boeing and Lockheed Martin. Formal models include human performance modeling influenced by Fitts' law, GOMS developed at Carnegie Mellon University, and probabilistic risk assessment used by Nuclear Regulatory Commission and Sandia National Laboratories. Evaluation employs randomized controlled trials in clinical settings at Cleveland Clinic and observational studies conducted at Centers for Disease Control and Prevention.

Regulatory frameworks reference standards from International Organization for Standardization (e.g., ISO 9241), directives from European Union agencies, and guidance by Food and Drug Administration and Federal Aviation Administration. Ethical considerations echo reports from Nuremberg Trials-era codes, contemporary guidance from World Health Organization, and professional codes of conduct from Human Factors and Ergonomics Society and International Ergonomics Association. Compliance is routinely required for medical devices registered with European Medicines Agency and Food and Drug Administration.

Academic programs at Massachusetts Institute of Technology, University of Michigan, Loughborough University, University College London, and Georgia Institute of Technology offer curricula integrating coursework from Cognitive psychology, Industrial design, Biomedical engineering, and Computer science. Professional certification and societies include Human Factors and Ergonomics Society, International Ergonomics Association, and credentials often required by employers such as Boeing, NASA, and General Motors. Continuing education is provided through conferences like CHI Conference on Human Factors in Computing Systems, Human Factors and Ergonomics Society Annual Meeting, and workshops hosted by IEEE and ACM.