It appears as if several basic methodological errors have been found with Reinhart-Rogoff along with an excel coding error that basically eliminate the conclusions drawn by the research.
http://www.nextnewdeal.net/rortybom...ere-are-serious-problems#.UW14rDQo2L4.twitter
The main result of their paper that is frequently used to justify austerity is that when countries break the 90% debt/GDP ratio they start to experience a major reduction in growth potential. They even find that average growth of countries with more than 90% debt/GDP is negative, which of course is bad news.
It turns out however that when other researchers attempted to replicate their findings they located two methodological findings. First, they excluded a number of years in which high debt countries had high growth and did so without any explanation. Secondly (and more worryingly), they engaged in some suspect weighting of their results, making equally weighted groups out of debt ranges. For example if a country spent 9 years with a debt/GDP ratio of 89% where they grew at 5% and then 1 year of debt/GDP ratio of 90% where they grew at -5%, the 9 years and the 1 year would be counted equally and average growth would be zero instead of 4%. Finally, it looks like they just missed some cells in an excel equation.
If you instead weight all years equally, include the missing years, and correct the excel coding error countries with more than 90% debt/GDP have an annual growth rate of 2.2% instead of -0.3%, wiping out all of their conclusions.
They might end up having good reasons for excluding some of that data or for weighting things differently, but I think those assumptions will be difficult to justify. In light of not only the real world failures of austerity but now even the theoretical underpinnings being taken out, does this affect anyone's belief in austerity? God, I hope so.
http://www.nextnewdeal.net/rortybom...ere-are-serious-problems#.UW14rDQo2L4.twitter
The main result of their paper that is frequently used to justify austerity is that when countries break the 90% debt/GDP ratio they start to experience a major reduction in growth potential. They even find that average growth of countries with more than 90% debt/GDP is negative, which of course is bad news.
It turns out however that when other researchers attempted to replicate their findings they located two methodological findings. First, they excluded a number of years in which high debt countries had high growth and did so without any explanation. Secondly (and more worryingly), they engaged in some suspect weighting of their results, making equally weighted groups out of debt ranges. For example if a country spent 9 years with a debt/GDP ratio of 89% where they grew at 5% and then 1 year of debt/GDP ratio of 90% where they grew at -5%, the 9 years and the 1 year would be counted equally and average growth would be zero instead of 4%. Finally, it looks like they just missed some cells in an excel equation.
If you instead weight all years equally, include the missing years, and correct the excel coding error countries with more than 90% debt/GDP have an annual growth rate of 2.2% instead of -0.3%, wiping out all of their conclusions.
They might end up having good reasons for excluding some of that data or for weighting things differently, but I think those assumptions will be difficult to justify. In light of not only the real world failures of austerity but now even the theoretical underpinnings being taken out, does this affect anyone's belief in austerity? God, I hope so.