Evaluating Rubin's Causal Model for Measuring the Capitalization of Environmental Amenities
NBER Working Paper No. 14957
This paper outlines a new framework for gauging the properties of quasi-experimental estimates of the willingness to pay (WTP) for changes in environmental and other non-market amenities. As a rule, quasi-experimental methods cannot offer alternative hypotheses to judge the quality of their quasi random assignments of treatment and control outcomes to economic agents. Their results must be judged by the explanation of the event used to construct the assignment and the counter examples offered as robustness checks for the logic of each application. This paper develops a four-step procedure for situations that rely on housing price capitalization. It is a computational analog to Chetty's  call for considering the measurement objectives as part of evaluating the relevance of reduced versus structural form modeling strategies. Two diverse applications are used to establish the method's relevance for environmental problems. The first examines the value of a conversion of land cover from xeric to wet landscape. The second examines the clean-up of hazardous waste sites. We find that even when quasi-experimental methods have access to statistically ideal instruments their performance in measuring general equilibrium WTP depends on other aspects of each application.
Document Object Identifier (DOI): 10.3386/w14957
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