Douglas Diamond
Our editors will review what you’ve submitted and determine whether to revise the article.
Douglas Diamond (born October 1953) American economist and cowinner, with Ben Bernanke and Philip Dybvig, of the 2022 Nobel Prize for Economics (the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel) for “research on banks and financial crises.” Diamond, Bernanke, and Dybvig were recognized by the Royal Swedish Academy of Sciences, which selects the winners of the Nobel Prize in Economics, for their insightful studies in the 1980s of the essential economic functions performed by banks, the vulnerability to bank runs (i.e., massive withdrawals of funds by a bank’s depositors) during periods of financial panic, and the ways in which governments may improve the stability of banking systems and avert or properly manage financial crises. The laureates’ combined research forms the foundation of modern bank regulation.
Douglas Diamond attended Brown University, where he received an A.B. degree in economics in 1975, and later Yale University, where he earned M.A., M.Phil., and Ph.D. degrees in economics in 1976, 1977, and 1980, respectively. He joined the faculty of the University of Chicago in 1979, becoming assistant professor of finance in 1980, associate professor in 1983, and full professor in 1986. He was named Theodore O. Yntema Professor of Finance in 1993 and Merton H. Miller Distinguished Service Professor of Finance in 2000.
Diamond’s Nobel Prize-winning research included a joint study with Philip Dybvig, “Bank Runs, Deposit Insurance, and Liquidity” (1983), that explained how banks perform the essential function of generating liquidity, thus making economic activity possible, by effectively transforming the savings of depositors into productive investments by long-term borrowers. Considered by itself, however, that function renders banks vulnerable to rumours of their imminent collapse, which can lead to bank runs and thus to self-fulfilling financial panics. Diamond and Dybvig demonstrated that such vulnerability can be removed through government-run deposit-insurance programs, whose very existence has the effect of allaying depositors’ fears of their banks’ collapse and thus preventing bank runs. The Diamond-Dybvig model, as it has come to be known, was cited in complementary and concurrent research on the Great Depression by Bernanke, which showed how bank runs beginning in 1929 transformed an ordinary recession into an economic catastrophe. Diamond was also recognized for theoretical work that demonstrated another vital function of the banking industry: the collection of information regarding the investment history and general creditworthiness of potential borrowers. Such information capital, as it is sometimes called, enables banks to profit from their promotion of productive investment. Bernanke’s research on the Great Depression served to confirm Diamond’s theory by showing how the loss of such information capital through bank failures led to additional failures and further economic decline.