Thursday, December 11, 2008

"The installation of infrastructure increases economic growth in the future"

Mark Thoma answers some of my questions about Woodward and Hall's post:

"Romer and Romer do not look at government spending multipliers, so we don't know if the government spending multiplier is smaller/larger than the tax multiplier if they are estimated in the same model (note, though, the the confidence band for Romer and Romer's tax multiplier is 1.3 to 4.7, so a multiplier smaller than Ramey's estimated value of 1.4 for government spending - though not strictly comparable since it comes from a different model - is within the confidence bounds of these estimates; confidence bounds for Ramey's estimates are not reported). I should also note that Romer and Romer isolate different types of tax cuts, the multiplier of 3.0 (plus or minus about 1.7) is for exogenous tax changes intended to promote economic growth, not tax changes intended to stabilize the economy. Their results for tax cuts used for stabilization purposes are not encouraging:

The behavior of output following countercyclical tax changes ... suggests that policymakers' efforts to adjust taxes to offset anticipated changes in private economic activity have been largely unsuccessful.

Finally, many estimates of the Keynesian government spending multiplier can be criticized on the same grounds that the tax cut advocates like to cite. The installation of infrastructure increases economic growth in the future, but these dynamic effects are missing from the standard Keynesian analysis (and using history as a guide is not very helpful since we have had very few surges in government spending devoted to infrastructure spending, and we have little data on the effects of fiscal policy - or any policy - in severe downturns since they are so unusual). If the dynamic effects were to be included in the infrastructure spending mulitplier, the multiplier would be larger."

This would explain my belief that infrastructure spending does have positive benefits, and that tax cuts don't necessarily do a great job as a stimulus.

But he doesn't discuss targeted tax cuts in order to help move the fear and aversion to risk in investment. I still think that's an obvious move, and don't understand what's so controversial about them.

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