Seminal work by Weitzman (1974) revealed prices are preferred to quantities when marginal benefits are relatively flat compared to marginal costs. We extend this comparison to indexed policies, where quantities are proportional to an index, such as output. We find that policy preferences hinge on additional parameters describing the first and second moments of the index and the ex post optimal quantity level. When the ratio of these variables' coefficients of variation divided by their correlation is less than approximately two, indexed quantities are preferred to fixed quantities. A slightly more complex condition determines when indexed quantities are preferred to prices. Applied to climate change policy, we find that the range of variation and correlation in country-level carbon dioxide emissions and GDP suggests the ranking of an emissions intensity cap (indexed to GDP) compared to a fixed emission cap is not uniform across countries; neither policy clearly dominates the other.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
13991.
Length: Date of creation: May 2008 Date of revision: Handle: RePEc:nbr:nberwo:13991
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Newell, Richard G. & Pizer, William A., 2006.
"Indexed Regulation,"
Discussion Papers
dp-06-32, Resources For the Future.
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Richard G. Newell & William A. Pizer, 2008.
"Indexed Regulation,"
NBER Working Papers
13991, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)
Richard G. Newell & William A. Pizer, 2008.
"Indexed Regulation,"
NBER Working Papers
13991, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
Other versions:
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