This paper analyses the theoretical and policy implications of assuming firm-specific lumpy investment behaviour by firms and compares such implications to those occurring when adopting different investment specifications in a new-Keynesian framework. We develop numerical simulations of the...

A three-sector model with a suitably chosen distribution of price stickiness can closely approximate the response to aggregate shocks of New Keynesian models with a much larger number of sectors, allowing for their estimation at much reduced computational cost