2012 Reprint of 1919 Edition. Exact facsimile of the original edition, not reproduced with Optical Recognition Software. A groundbreaking study of investment psychology. When this book was originally published in 1912, Selden's idea that "movements of prices on the exchanges are dependent to a very considerable degree on the mental attitude of the investing and trading public" was still a novel notion. It is now an established fact. Though published in 1912, Selden's book could have been written yesterday. This makes complete sense, as the main topic - human psychology - has not changed at all in the past century.