Elton Mayo and his colleagues conducted their experiments at the Hawthorne plant over which period?

1. In 1927 the Hawthorne engineers asked Harvard professor Elton Mayo and a team of researchers to join their investigation. 2. From 1927 to 1932 Mayo and his colleagues ran experiments on job redesign, length of workday and workweek, length of break times, and incentive plans. 3. The classical era ran from about 1900 to the mid-1930s, so the early date ranges belong to Taylor's period rather than to Mayo's studies. 4. The results tied increases in performance to a complex set of employee attitudes. _Source: OpenStax Introduction to Business (CC BY 4.0), Ch 9 "Motivating Employees", section 9.2 The Hawthorne Studies_