A company wants to select better managers, reduce turnover, and design jobs that people can sustain. Industrial-organizational psychology applies psychological principles to workplaces and organizations.

Industrial topics include personnel selection, training, performance appraisal, and job analysis. Organizational topics cover motivation, leadership, team functioning, organizational culture, and change. Practitioners design assessment centers, conduct employee surveys, evaluate training programs, and advise on restructuring.

The field balances organizational effectiveness with employee well-being. Research methods range from large-scale surveys and experiments to qualitative studies of workplace culture. Ethical issues arise around testing fairness, privacy, and the use of psychological techniques for managerial control. At its best, I-O psychology improves both productivity and the human experience of work.

Most adults spend the majority of their waking hours in organizational settings; the quality of those settings shapes daily life.