Volume III examines in clear and elegant prose the roles of knowledge and information in economics Part One analyzes the effects of new or uncertain information on market performance examines the formation and revision of expectations and provides a classification of literature and an extensive bibliography Part Two discusses private and social valuations of education and training the controversy over nature vs nurture the issue of credentialism and the depreciation of human capital Originally published in 1984 The Princeton Legacy Library uses the latest print on demand technology to again make available previously out of print books from the distinguished backlist of Princeton University Press These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905