The book has an active table of contents for readers to access each chapter.

The book had a considerable impact on the history of social psychology, psychopathology, and investment method.

The book also produced important impact on the research topics of economic bubbles, pseudoscience, popular delusions, hoaxes, and scientific investment.

The book further inspired many legendary researchers and investors in the United States including Benjamin Graham (Author of The Intelligent Investor), George Soros, and Warren Buffett. Warren Buffett’s investment discipline and practice on the cycle of fear and greedy are in tandem with the observations in the books Extraordinary Popular Delusions and the Madness of Crowds.

Although the book was published in 1852, it still works today since the human psychology has not changed in the past century and will not change at all in the next century.

This is a must read book for readers who are interested in investing, researching the major financial events coined by MacKay as “the Madness of Crowds”,  and learning the theory that can be simply coined by Selden as “psychology of the stock market”.