Mayo and Roethlisberger "walked into the plant saying, "We don't actually know anything, and therefore we need to record everything,' " said Michel Anteby, an associate professor of business administration and a Marvin Bower Fellow at HBS, who co-wrote an essay on Mayo and Roethlisberger's work for a 2007 Baker Library exhibit about the Hawthorne Experiments. "You could call it systematic. You could also call it compulsive."

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