Gustave Le Bon's book, published in 1895, focuses on the study of group psychology. The research background is the French Revolution (1789- 1794). Although many readers may know little about the history of the French Revolution, the author and translator Ma Xiaojia's notes enable readers to fully understand the historical events and meanings quoted in the book.

Translation is a young translator with a master's degree in psychology from Chinese Academy of Sciences and a certificate of second-class psychological counselor. TEM-8, once praised by Yu and Li Yang; Translate more than 30 books.

Different from other psychological works that focus on analysis, this book focuses more on the elaboration of the research results of group psychology. Through several chapters, such as group personality, ideology, classification and corresponding characteristics, and through repeated assertions and conclusions, the author directly shows readers how the impulse, violence and dynamic personality of the group affect the group and the reasons for the emergence of the group concept. Although many ideas in the book were written more than 100 years ago, they are still instructive to read now.

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