This report reviews how variouscountries are seeking to boost public investment managementperformance (PIMP) in response to the current economicdownturn. Public investment, for the purposes of thisreview, includes investment by the general government plusinvestment by government-owned corporations. The report wascommissioned for the Public Sector Performance Global ExpertTeam (PSP GET) at the World Bank. The report focuses on thepotential roles for public investment management in thecurrent downturn, including: i) scaling-up investmentspending i.e. simply doing more; ii) selecting investmentsthat are likely to be most effective in terms of stimulatingthe economy or protecting particular social/vulnerablegroups; iii) helping to accelerate investments by reducingthe time between conception to implementation; and iv) otherimprovements in the general quality of investment spending,i.e. reducing waste or enhancing efficiency and effectiveness.