Standard solution methods for linear rational expectations models assume a time-invariant structure. Recent work has gone beyond this by formulating solution methods for linear rational expectations models subject to structural changes, such as parameter shifts and policy reforms, that are...

This paper analyses the conduct of monetary policy in an environment where households' desire to amass precautionary savings is influenced by fluctuations in the volatilities of disturbances that hit the economy. It uses a simple New Keynesian model with external habit formation that is...

In a recent article Pfleiderer (2020) argues that models should be put through a 'reality filter' before they should be taken seriously as a basis for empirical testing or policy analysis. He regards models that make dubious assumptions as 'chameleons', because while as theory they may give...