Which of the following approach emphasizes the' effect of psychological &. Social factors on employees' performance?

Human relations approach emphasizes the' effect of psychological &. Social factors on employees' performance. According to Human Relations Approach, management is the Study of behaviour of peo­ple at work. This approach had its origin in a series of experiments conducted by Professor Elton Mayo and his associates at the Harvard School of Business at the Western Electric Company’s Hawthorne Works, near Chicago.