macroeconomic model

Macroeconomic modelling at the Institute: hopes, challenges and a lasting contribution

The Institute is a world leader in macroeconomic modelling and forecasting. It has produced quarterly economic forecasts for around sixty years, supported by macroeconomic models. The aim of the original builders of macroeconomic models was to transform understanding of how economies worked and use that knowledge to improve economic policy. In the early years, when computers were rare, macroeconomic modelling was a new frontier and Institute economists were among the first to produce a working model of the UK economy.

A model-based analysis of the effect of increased public investment

There is a strong case for boosting public investment in many countries based on identified country-specific structural weaknesses and the relatively low levels of such investment. This paper analyses the potential macroeconomic benefits of increased public investment using simulations on NiGEM. The results suggest that the supply-side benefits from raising potential output are likely to lead to more favourable macroeconomic outcomes than those from using many other standard fiscal instruments, although it takes many years for the full effect on potential output to accumulate.

Using NiGEM in uncertain times: Introduction and overview of NiGEM

This paper introduces a special issue of the Review on how the National Institute Global Econometric Model (NiGEM) is being used to navigate uncertain times. NiGEM is the leading global macroeconomic model, used by both policy-makers and the private sector across the globe for economic forecasting, scenario building and stress testing. The paper summarises the main features of NiGEM and describes some standard model simulations to illustrate how the model responds to monetary, fiscal and technology shocks.