The Use (and Abuse) of Meta-Analysis in Environmental and Natural Resource Economics: An Assessment |
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Authors: | Jon P Nelson Peter E Kennedy |
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Institution: | (1) Department of Economics, Pennsylvania State University, 603 Kern Building, University Park, PA 16802, USA;(2) 642 Glenn Road, State College, PA 16803, USA;(3) Simon Fraser University, Burnaby, BC, Canada, V5A 1S6 |
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Abstract: | Motivated by the 2006 report of a Work Group appointed by the Environmental Protection Agency (EPA), this paper examines the
present state of meta-analysis in environmental economics and offers recommendations for its future use. To this end we summarize
and assess 140 meta-analyses from 125 published and unpublished studies, covering 17 topical categories in environmental and
resource economics. First, we provide several generic meta-analysis models as reference points and discuss major estimation
issues. Five econometric issues are identified as part of a complete analysis: (1) sample selection criteria; (2) basic data
summary; (3) primary data heterogeneity; (4) heteroskedasticity; and (5) non-independence of multiple observations from primary
studies. Second, a tabular summary is presented for the 140 meta-analyses with respect to estimation methods. Third, a narrative
summary is presented for 19 meta-analyses, including the three value-of-statistical-life studies examined by the EPA Work
Group and one analysis from each of 16 other categories. Fourth, we offer a set of “best practice” guidelines for future meta-analyses
in this and other areas of economics. Last, the paper comments on the use of meta-analytic methods for benefit transfers of
environmental values.
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Keywords: | Meta-analysis Environmental valuation Benefit transfer Econometric modeling |
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