Human factors jobs may focus on engineering or ergonomics. You may work on physical ergonomics, which is the relationship between human anatomy and a product or process, or cognitive ergonomics, which focuses on things such as memory, perception, and motor responses. Organizational ergonomics is concerned with procedures and the use of systems and technology to complete tasks or organize. A human factors engineer or ergonomist designs products, processes, and facilities that improve the way that people interact with technology. The duties and responsibilities of human factors psychologist or scientist are to study and test these interactions.