This practice grew out of the human relations movement in the 1920s .
This practice is based on some of the principles discovered by scholars doing research in management and organization studies , most notably the Hawthorne Experiments that led to the Hawthorne effect .
This practice grew out of the human relations movement in the 1920s , and is based on some of the principles discovered by scholars doing research in management and organization studies , most notably the Hawthorne Experiments that led to the Hawthorne effect .