During the peace between the two world wars, psychology began to emerge in the field of industrial production. The labor market was fierce and turbulent at that time, and many industries needed psychological workers to help manage workers, and Huoshang Factory was one of them. It

During the peace period between the two world wars , psychology began to make its mark in the field of industrial production. The labor market was fierce and turbulent at that time, and many industries needed psychological workers to help manage workers, and Huoshang Factory was one of them. It is located in Cicero, Illinois, where most of the major research results of industrial psychology come from. Huo Shang Factory is affiliated to the Western Power Company, which may be regarded as a model of technological innovation at that time.

An experimental site for human resource management research was also selected at Huo Shang Factory. This research found that this time it was the well-known Huo Shang Effect. In order to improve workers' productivity, the management of Western Electric Power Company decided to use Huoshang Factory as a pilot to improve the lighting of the workers' workshops in the experimental group. The lighting conditions in other workshops remain unchanged as a comparison.

Three years have passed, and the company invited psychologist Elton Mayo to evaluate the impact of workshop lighting conditions on production efficiency. The results showed that the production efficiency of workers in the experimental and control groups was significantly improved. He believes that both the workers in the experimental group and the control group have received more attention from managers, which leads to an improvement in production enthusiasm and production efficiency. This is what people call the Huo Business Effect.

Mayo continued to conduct experiments at Huo Shang factory. In order to test the impact of working conditions (such as increasing rest time and reducing working time) on production efficiency, he chose six female workers in the relay assembly workshop as the research object, and asked them to select collaborators and ask them to complete a job together.

results found that the work efficiency of these workers has been significantly improved, and even if they complete the assembly work alone, they still maintain high work efficiency. Through the interview, Mayo found that the attention of others is the main reason for improving workers' productivity. Western power companies have begun to redesign production processes so that workers can work together to complete production tasks, and other production industries have followed their production processes. The application of psychology in the production industry has given birth to an emerging profession - human resource management consultant.