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The authors gratefully acknowledge assistance from Daniel Monchuk and Terrance Hurley in conducting the surveys and assistance from Monsanto in providing some of the products used in the experiment. The views expressed here are those of the authors, and may not be attributed to the Economic Research Service or the US Department of Agriculture. Abstract To(More)
Numbers of non-indigenous species--species introduced from elsewhere - are increasing rapidly worldwide, causing both environmental and economic damage. Rigorous quantitative risk-analysis frameworks, however, for invasive species are lacking. We need to evaluate the risks posed by invasive species and quantify the relative merits of different management(More)
Discussion papers of the WZB serve to disseminate the research results of work in progress prior to publication to encourage the exchange of ideas and academic debate. Inclusion of a paper in the discussion paper series does not constitute publication and should not limit publication in any other venue. The discussion papers published by the WZB represent(More)
Concern exists that hypothetical willingness to pay questions overestimate real willingness to pay. In a field experiment, we compare two methods of removing hypothetical bias, a cheap talk approach and a certainty approach. Subjects, who are diabetes patients, receive a real or hypothetical offer to purchase a pharmacist-provided diabetes management(More)
Invasive species have been highlighted as a major driver of global environmental change and economic damages, spurring governments worldwide to increase prevention and control investments. Unfortunately, recent research is frequently in a form inaccessible to policy-makers and managers. The complexity of analysis and resulting time requirements can be(More)
Researchers now use the lab to examine the behavioral underpinnings of valuation before the field application which some argue has less experimental control. But lab valuation work raises its own set of concerns when it uses private goods to explore nonmarket valuation behavior because private goods have substitutes often unaccounted for in the lab.(More)
Biomedical studies suggest that a person's behavior matters to health, but these studies usually treat human choice as exogenous. This study shows that individual choices on nutrient intake, exercise, and use of medication are influenced by exogenous food prices, wages, and non-labor income. Using these exogenous variables as instruments for endogenous(More)
Using a new brand of cigarettes with less nicotine content than conventional cigarettes, we conducted experimental auctions at two grocery stores to estimate smokers' value of nicotine. Our approach is novel because the brand of cigarettes auctioned was new to the market and the cigarette's nicotine content is reduced using genetic modification, with no(More)