Valerie Ramey in Ten Years after the Financial Crisis: What Have We Learned from the Renaissance in Fiscal Research? from the Journal of Economic Perspectives (posted to Titanium) describes fiscal policy research since the Great Recession. She examines fiscal multiplier effect estimates. The IS-LM model suggests that tax multipliers should be smaller than government spending multipliers. Does the literature support that finding? What explanations does she give for the difference between the government spending and tax multipliers? Please explain.