Hawthorne Studies
The Hawthorne Studies were a series of long-term research projects conducted by Elton Mayo and his team from 1929 to 1932 at Western Electric’s Hawthorne Works. These studies are considered the origin of organizational psychology because they expanded the scope of industrial psychology beyond employee selection to include complex issues like interpersonal relations, motivation, and organizational dynamics. A key finding was that psychological and social factors were more influential on productivity than physical aspects of the work environment. First-hand video accounts of the original studies are available and offer further insight into the research.

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Hawthorne Studies
Psychological Contributions to the U.S. Military in WWI
Hawthorne Studies
Expansion of I-O Psychology during WWII
Post-WWII Research Trends in I-O Psychology
Impact of the 1964 Civil Rights Act on I-O Psychology
Influence of World Wars on the Expansion of Industrial Psychology
Evolution from Industrial to Organizational Psychology
A psychologist in the 1910s is hired by a factory to determine the optimal level of lighting and the most efficient layout of machinery to maximize worker output. The study exclusively measures changes in production numbers based on these physical adjustments. This research approach is most characteristic of which phase in the development of the field?