Roger H. von Haefen

Department of Agricultural and Resource Economics
4338 Nelson Hall
North Carolina State University Box 8109
Raleigh, NC 27695-8109
Tel: 919/515-8946
Fax: 919/515-1824

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org
Institutional Affiliation: North Carolina State University

NBER Working Papers and Publications

September 2014Conservation Policies: Who Responds to Price and Who Responds to Prescription?
with Casey J. Wichman, Laura O. Taylor: w20466
The efficiency properties of price and non-price instruments for conservation in environmental policy are well understood. Yet, there is little evidence comparing the effectiveness of these instruments, especially when considering water resource management. We exploit a rich panel of residential water consumption to examine heterogeneous responses to both price and non-price conservation policies during times of drought while controlling for unobservable household characteristics. Our empirical models suggest that the burden of pricing policies fall disproportionately on low-income households and fail to reduce consumption among households who generally are large consumers of water. However, prescriptive policies such as restrictions on outdoor water use result in uniform responses across ...

Published: Wichman, Casey J. & Taylor, Laura O. & von Haefen, Roger H., 2016. "Conservation policies: Who responds to price and who responds to prescription?," Journal of Environmental Economics and Management, Elsevier, vol. 79(C), pages 114-134. citation courtesy of

October 2008How Do Gasoline Prices Affect Fleet Fuel Economy?
with Shanjun Li, Christopher Timmins: w14450
Exploiting a rich data set of passenger vehicle registrations in twenty U.S. metropolitan statistical areas from 1997 to 2005, we examine the effects of gasoline prices on the automotive fleet's composition. We find that high gasoline prices affect fleet fuel economy through two channels: (1) shifting new auto purchases towards more fuel-efficient vehicles, and (2) speeding the scrappage of older, less fuel-efficient used vehicles. Policy simulations based on our econometric estimates suggest that a 10% increase in gasoline prices from 2005 levels will generate a 0.22% increase in fleet fuel economy in the short run and a 2.04% increase in the long run.

Published: Shanjun Li & Christopher Timmins & Roger H. von Haefen, 2009. "How Do Gasoline Prices Affect Fleet Fuel Economy?," American Economic Journal: Economic Policy, American Economic Association, vol. 1(2), pages 113-37, August. citation courtesy of

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