In the first relay, second relay, and mica splitting experiments as well as bank wiring observation, research attention was drawn to small group activities. Three separate groups of five female workers participated in the previous three experiments, while 14 male workers were in the bank wiring observation.
The final core conclusions that the researchers reached from these experiments were that measured experimental variables such as incentive payment had little effect, while that the unmeasured quality of human relations of workers to management and peer group was responsible for most output improvement.
The Hawthorne studies have been described as the most important social science experiment ever conducted in an industrial setting, yet the studies were not without their critics. Several criticisms, including those of sociologist Daniel Bell, focused on the exclusion of unionized workers in the studies.
References: Baker Library, The Hawthorne Effect, Copyright 2010, retrieved from the internet at http://www.library.hbs.edu/hc/hawthorne/09.html Cherry, Kendra. The Hawthorne Effect, Copyright 2011, retrieved from the internet at http://psychology.about.com/od/hindex/g/def_hawthorn.htm Franke, R. H. & Kaul, J. D. (1978). The Hawthorne experiments: First statistical interpretation. American Sociological Review, 1978, 43, 623-643.