Industrial and organizational psychology (also known as I–O psychology, occupational psychology, work psychology, WO psychology, IWO psychology and business psychology) is the scientific study of human behavior in the workplace and applies psychological theories and principles to organizations and individuals in their workplace. In the UK, industrial and organizational psychologists are referred to as occupational psychologists and one of 7 'protected titles' and specializations in psychology regulated by the Health and Care Professions Council.