Hawthorne experiments were conducted under the leadership of

The correct answer is C. Elton Mayo.

The Hawthorne experiments were a series of studies conducted at the Hawthorne Works of the Western Electric Company between 1924 and 1932. The experiments were designed to investigate the relationship between working conditions and productivity. However, the results of the experiments were surprising. The researchers found that productivity increased regardless of whether working conditions were improved or worsened. This led to the conclusion that social factors, such as morale and group dynamics, had a greater impact on productivity than working conditions.

Elton Mayo was a social psychologist who was involved in the Hawthorne experiments. He was the first to suggest that social factors could have a significant impact on productivity. His work on the Hawthorne experiments helped to change the way that organizations thought about employee motivation and productivity.

D. Bright was a psychologist who was not involved in the Hawthorne experiments. He is best known for his work on human factors engineering.

T. Ford was an industrialist who is best known for his assembly line production methods. He was not involved in the Hawthorne experiments.

K. Tanaka is a Japanese psychologist who is not known for his work on the Hawthorne experiments.