The document summarizes the Hawthorne studies experiments conducted between 1927-1932. The Relay Assembly Test Room experiment manipulated factors like pay incentives, work hours, rest periods and work environment to measure their effects on worker output. Test Room 1 saw improved worker performance and productivity due to increased privileges and a sense of recognition. However, Test Room 2 saw limited productivity gains as workers felt a lack of recognition and job insecurity. The studies highlighted the importance of social and psychological factors in impacting worker productivity over just physical work conditions alone.