Industrial and organizational psychology

Lore & Background

Industrial and organizational psychology applies psychological science to the human experience of work, aiming to improve both individual and organizational effectiveness, health, and well-being. The field is known by different names globally: occupational psychology in the United Kingdom, organisational psychology in Australia, South Africa, and New Zealand, and work and organizational (WO) psychology throughout Europe and Brazil. The broader international term is industrial, work, and organizational (IWO) psychology. Practitioners are trained in the scientist–practitioner model, meaning they both conduct research and apply psychological theories and principles to real-world workplace settings. Their work focuses on enhancing job performance, motivation, job satisfaction, employee wellbeing, and health and safety. Research and practice address employee attitudes, behaviors, emotions, and stress, as well as recruitment, training, 360-degree feedback, and change management. The field also examines the work–nonwork interface, including career transitions, burnout, unemployment, retirement, and work–family conflict. Historically, the field emerged alongside experimental psychology, with early figures like Hugo Münsterberg and James McKeen Cattell, who studied individual differences in work behavior. World War I spurred simultaneous development in the United States and the United Kingdom. Walter Dill Scott, a prominent early I-O psychologist and APA president, worked at the Carnegie Institute of Technology developing methods for selecting and training sales personnel. The profession is recognized as a specialty by the American Psychological Association, represented by its Division 14 (SIOP). In the UK, occupational psychology is a protected title regulated by the Health and Care Professions Council. In Europe, specialists may hold a EuroPsy Certificate in Work and Organisational Psychology. In Australia and South Africa, the title is legally protected and regulated by national health practitioner agencies. The Alliance for Organizational Psychology, formed in 2009, federates IWO psychology societies from countries including Australia, Britain, Brazil, Canada, Chile, Europe, Germany, Hong Kong, Japan, the Netherlands, New Zealand, Singapore, South Africa, and the United States.

Reader's Guide

Industrial and organizational psychology matters because it systematically applies psychological science to the central human activity of work. Its significance lies in bridging laboratory psychology with real-world economic and organizational problems, addressing both individual performance and worker well-being. The field's dual focus—industrial (individual differences, assessment, prediction of performance) and organizational (employee behavior, feelings, well-being)—has shaped modern human resources, training, and management practices. They also address the work–nonwork interface, including career transitions, burnout, unemployment, retirement, and work–family conflict. The field's international recognition, with protected titles in the UK, Australia, and South Africa, and a European specialist certificate (EuroPsy), underscores its global relevance. By optimizing both organizational effectiveness and individual health, I-O psychology contributes to sustainable work environments.

Did You Know?

• I-O psychology is known as occupational psychology in the United Kingdom and organisational psychology in Australia, South Africa, and New Zealand.
• During World War I, Walter Dill Scott and Walter Van Dyke Bingham adapted the Stanford-Binet intelligence test into the Army Alpha for group testing of U.S. Army recruits.