Standard macroeconomic models suggest that the 'great ratios' of consumption to output and investment to output should be stable functions of structural parameters. We examine whether the ratios are stationary for the US and UK, allowing for structural breaks that could reflect time-varying...

Golosov and Lucas (2007) have challenged the view that infrequent price adjustments by firms explain why money has aggregate real output effects. The basis of their challenge is the ‘selection effect’ – re-setting firms are not selected at random, they are those firms whose prices are...