Peter Temin, David Vines, 14 November 2014

The current debate on the efficacy of Keynesian stimulus mirrors the resistance Keynes met with when initially advocating his theory. This column explains the original controversy and casts today’s policy debate in that context. Now that concepts of Ricardian equivalence and the fiscal multiplier are formally defined, we are better able to frame the arguments. The authors argue that a simple model of the short-run economy can substantiate the argument for stimulus.

Paul Beaudry, Dana Galizia, Franck Portier, 01 June 2014

Hayek viewed recessions as working out excessive investments; Keynes viewed them as demand shortages. This column argues that they may not be as mutually exclusive as many think. Recessions may reflect periods of liquidation but this may be associated with inefficient adjustment involving unemployment and precautionary savings. Stimulative policy may be desirable even if it delays the full recovery.

Simon Wren-Lewis, 24 February 2012

Just five years ago, macroeconomists talked about a new synthesis, bringing together Keynesian and Classical ideas in a unified, microfounded theoretical framework. Following the Great Recession, it appears that mainstream macroeconomics has once again split into schools of thought. This column explains why macroeconomics, unlike microeconomics, periodically fragments in this way.

Jonathan Portes, 07 February 2012

What does it mean to be a ‘Keynesian’? This column argues that, like so much in economics, the label has become politicised. The cost is an impoverished policy debate that is resulting in millions of avoidable job cuts.

Jacob Kirkegaard, 06 February 2012

Europe’s new fiscal compact is seen by some as the death of Keynesian government spending. This column argues that such analysis is simply wrong. It says that there is still room for government spending in extreme situations, but that there are now more safeguards to maintain stability, reduce contagion, and placate German taxpayers.

Alberto Alesina, Roberto Perotti, 17 June 2010

Many analysts blame Germany’s fiscal prudence for worsening the crisis. This essay argues that the monomaniacal focus on aggregate demand is based on slightly outdated and oversimplified Keynesianism. The real constraint on European growth is not Germany’s fiscal policy. It is the supply side rigidities that plague all European nations – especially those at the heart of this crisis. The demand side matters, but is it foolish to think that German budget deficit of 5% instead of 3% of GDP would solve Europe’s problems.

Roger Farmer, 06 January 2010

Most policymakers subscribe to the existence of a natural rate of unemployment. This column provides a visual history of unemployment, vacancies, and inflation in the US and says there is no natural rate. It suggests the economy can rest in any equilibrium on the Beveridge curve, as decided by the confidence of households and firms that pins down asset values.