Reply to Sahud and Bhanot

Weighing the Evidence: The Hawthorne Effect

“…3,4 The chance that a Hawthorne effect will bias results is highest when healthcare providers or patients understand that they are being observed for a study for a brief period. By the 1920s, corporations were interested in the link between workers' productivity and their working conditions.…”

“…3,4 The chance that a Hawthorne effect will bias results is highest when healthcare providers or patients understand that they are being observed for a study for a brief period. Although there was no correlation between the workers' efficiency and lighting level, productivity increased for a short time when the lighting level was changed, irrespective of whether it was brighter or dimmer, but returned to baseline when the study period ended.…”