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Thomas Herndon (born 1985) is an assistant professor of economics at
Loyola Marymount University Loyola Marymount University (LMU) is a Private university, private Society of Jesus, Jesuit and Religious of the Sacred Heart of Mary, Marymount research university in Los Angeles, California. It is located on the west side of the city near P ...
became known for critiquing " Growth in a Time of Debt", a widely cited academic paper by
Carmen Reinhart Carmen M. Reinhart (née Castellanos, born October 7, 1955) is a Cuban-American economist and the Minos A. Zombanakis Professor of the International Financial System at Harvard Kennedy School. Previously, she was the Dennis Weatherstone Senior F ...
and Kenneth Rogoff supporting the
austerity Austerity is a set of political-economic policies that aim to reduce government budget deficits through spending cuts, tax increases, or a combination of both. There are three primary types of austerity measures: higher taxes to fund spend ...
policies implemented by governments in Europe and North America in the early 21st century. His research concluded that these measures may not have been necessary. Herndon proved that the paper contained multiple errors, provoking widespread international interest and embarrassment for austerity policymakers. The Reinhart–Rogoff paper was frequently cited during the 2012 U.S. presidential election campaign. It was also frequently cited among policymakers in congress, including in the drafting of the Bowles-Simpson report. However, there are differing views on the actual impact the original paper may have had on policy making. The findings have been described as "shocking" and as having rocked the economics world. Publications such as '' The Washington Post'' had for several years taken the conclusions of the Reinhart–Rogoff paper as an "economic consensus view." ''
New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * ...
'' magazine wrote that Herndon "just used part of his spring semester to shake the intellectual foundation of the global austerity movement."


Discovery of flaws in "Growth in a Time of Debt"

During his graduate studies in a class with Professor Michael Ash, Herndon was assigned to pick an economics paper and try to replicate the results. He chose "Growth in a Time of Debt", and throughout the semester his attempts to replicate the results proved unsuccessful. After further consultation with his professors Michael Ash and
Robert Pollin Robert Pollin (born September 29, 1950) is an American economist, and self described socialist. He is a professor of economics at the University of Massachusetts Amherst and founding co-director of its Political Economy Research Institute (PE ...
, Herndon was encouraged to contact the authors Reinhart and Rogoff at Harvard. They provided him with the actual working spreadsheet they had used to obtain their results. Herndon looked into the detail of the original spreadsheet and found several issues: *The authors had accidentally only included 15 of the 20 countries under analysis in their key calculation (having excluded Australia, Austria, Belgium, Canada and Denmark); *For some countries, some data was missing; *The methodology to average out performance of countries of different sizes was called into question. For example, one bad year for New Zealand, was weighted equally with the United Kingdom, a major global economy with nearly 20 years of high public debt. Reinhart and Rogoff have defended the high weight given to New Zealand's economy in 1951, but even granting this point fully, grave doubts are still placed on the major Reinhart–Rogoff results. The basic conclusion that countries with indebtedness rates above 90% of
GDP Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced and sold (not resold) in a specific time period by countries. Due to its complex and subjective nature this measure is ofte ...
have lower growth rates still held, but the most spectacular results disappeared, the relationship was much gentler and there were numerous exceptions to the rule. These results were published on 15 April 2013 as a draft working paper, and in 2014 in the peer-reviewed ''
Cambridge Journal of Economics The ''Cambridge Journal of Economics'' is a peer-reviewed academic journal of economics. The journal was founded in 1977 by the ''Cambridge Political Economy Society'' with the aim of publishing articles that followed the economic traditions est ...
''.


References


External links


"Austerity's Spreadsheet Error – Thomas Herndon"
Herndon interviewed by Stephen Colbert (video, geographically limited availability) {{DEFAULTSORT:Herndon, Thomas 1985 births Living people Place of birth missing (living people) American skeptics Austerity Great Recession University of Massachusetts Amherst alumni University of Massachusetts Amherst College of Social and Behavioral Sciences alumni Evergreen State College alumni