SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Shaikh, Sabina L.; Sun, Lili; van Kooten, G. Cornelis.

We examine the impact of uncertainty on contingent valuation responses using (1) a survey of Canadian landowners about willingness to accept compensation for converting cropland to forestry and (2) a survey of Swedish residents about willingness to pay for forest conservation. Five approaches from the literature for incorporating respondent uncertainty are used and compared to the traditional RUM model with assumed certainty. The results indicate that incorporating uncertainty has the potential to increase fit, but could introduce additional variance. While some methods for uncertainty are an improvement over traditional approaches, we caution against systematic judgments about the effect of uncertainty on contingent valuation responses.

A Pseudo-Sequential Choice Model for Valuing Multi-Attribute Environmental Policies or Programs in Contingent Valuation Applications

Palavras-chave: Respondent uncertainty; Willingness to accept; Contingent valuation; Environmental Economics and Policy; Land Economics/Use; Q10; Q15; Q23.

Ano: 2005

URL: http://purl.umn.edu/37025

Volinskiy, Dmitriy; Bergstrom, John C.; Cornwell, Christopher M.; Holmes, Thomas P..

The assumption of independence of irrelevant alternatives in a sequential contingent valuation format should be questioned. Statistically, most valuation studies treat nonindependence as a consequence of unobserved individual effects. Another approach is to consider an inferential process in which any particular choice is part of a general choosing strategy of a survey respondent. A stochastic model is suggested, consistent with the reflexivity, transitivity, and continuity axioms of utility analysis. An application of this theoretical model to the valuation of watershed ecosystem restoration demonstrates that an empirical model recognizing reflexivity and transitivity, and also allowing for continuity, shows the highest in-sample predictive ability.

Tipo: Journal Article

Palavras-chave: Contingent valuation; Sequential choices; Modeling approaches; Watershed ecosystem service valuation; Environmental Economics and Policy.

Ano: 2010

URL: http://purl.umn.edu/59325

The Economic Value of Basin Protection to Improve the Quality and Reliability of Potable Water Supply: Some Evidence from Ecuador

Zapata, Samuel D.; Benavides, Holger M.; Carpio, Carlos E.; Willis, David B..

This study estimates the willingness to pay (WTP) of Loja’s households to protect two micro-basins that supply over 40 percent of potable water to the city. Results indicate that households have an average WTP of $5.80 per month, which corresponds to a 25 percent increase in the self-reported monthly water bill, to preserve the basins.

Dynamic Processes in Contingent Valuation: A Case Study Involving the Mahogany Glider

Palavras-chave: Basin protection; Contingent valuation; Loja; Ecuador; Environmental Economics and Policy; Land Economics/Use.

Ano: 2009

URL: http://purl.umn.edu/46773

Tisdell, Clement A.; Wilson, Clevo; Swarna Nantha, Hemanath.

This paper reports the results of an experiment involving a sample of 204 members of the public who were assessed on three occasions about their willingness to pay for the conservation of the mahogany glider. They were asked this question prior to information being provided to them about the glider and other focal wildlife species; after such information was provided, and finally after participants had had an opportunity to see live specimens of this glider. The mean willingness to pay of the relevant samples are compared and found to show significant variations. Theories are considered that help explain the dynamics of these variations. Serious concerns are raised about the capacity of information provision to reveal ‘true’ contingent valuations of public...

Did the Great Recession Reduce Visitor Spending and Willingness to Pay for Nature Based Recreation? Evidence from 2006 and 2009

Palavras-chave: Awareness; Contingent valuation; Dynamic processes; Experiential learning; Information; Wildlife; Willingness to pay; Environmental Economics and Policy; D83; D84; Q51; Q57.

Ano: 2004

URL: http://purl.umn.edu/51414

Loomis, John B.; Keske, Catherine M.; Lohman, Greta.

AAEA 2010 POSTER

To Fund or Not to Fund: Assessment of the Potential Impact of a Regional Promotion Campaign

Palavras-chave: Visitor Expenditures; Recreation; Contingent valuation; Hiking; Colorado; Environmental Economics and Policy.

Ano: 2010

URL: http://purl.umn.edu/60825

Carpio, Carlos E.; Isengildina-Massa, Olga.

This paper develops a framework for assessing the potential economic impact of a regional promotion campaign combining contingent valuation methods with a partial displacement equilibrium model. The proposed approach is applied to the evaluation of the potential economic impact of the locally grown campaign in South Carolina. Results reveal that the first season of the promotion campaign increased consumer willingness to pay for produce by 3.4%. The change in consumer preferences and the corresponding shift in demand increased producer surplus by $3.09 million. This economic benefit, combined with the 2007 promotion campaign investment, resulted in a benefit-cost ratio of 6.18.

Tipo: Journal Article

Palavras-chave: Contingent valuation; Economic impact; Equilibrium displacement model; Regional promotion campaign; Consumer/Household Economics.

Ano: 2010

URL: http://purl.umn.edu/93214

Chapter 15: CONTINGENT VALUATION OF CONSUMERS' WILLINGNESS TO PURCHASE PORK WITH LOWER SATURATED FAT

Halbrendt, Catherine K.; Sterling, Lesa; Snider, Sue; Santoro, Gail.

This book was originally published by Westview Press, Boulder CO, 1995.

Tipo: Book Chapter

Palavras-chave: Pork products; Reduced saturated fat; Contingent valuation; Willingness to pay; Food Consumption/Nutrition/Food Safety.

Ano: 1995

URL: http://purl.umn.edu/25979

THE DYNAMIC FORMATION OF WILLINGNESS TO PAY: AN EMPIRICAL SPECIFICATION AND TEST

Corrigan, Jay R.; Kling, Catherine L.; Zhao, Jinhua.

In a static setting, willingness to pay for an environmental improvement is equal to compensating variation. However, in a dynamic setting characterized by uncertainty, irreversibility, and the potential for learning, willingness to pay may also contain an option value. In this paper, we incorporate the dynamic nature of the value formulation process into a study using a contingent valuation method, designed to measure the value local residents assign to a north-central Iowa lake. Our results show that willingness to pay is highly sensitive to the potential for future learning. Respondents offered the opportunity to delay their purchasing decisions until more information became available were willing to pay significantly less for improved water quality...

Uncertainty in Individuals' Preferences for Non-commodity Outputs Provided by Rural Development Programs (RDPs): A Contingent Valuation Approach

Palavras-chave: Clear Lake; Contingent valuation; Water quality; Willingness to pay; Demand and Price Analysis.

Ano: 2003

URL: http://purl.umn.edu/18546

Dominguez-Torreiro, Marcos; Solino, Mario.

Rural development programs (RDPs) are currently envisaged as a means to foster the provision of a broad range of non-commodity outputs emanating from multifunctional rural environments. This paper presents a Contingent Valuation survey that analyses individuals’ perceptions of and willingness to pay (WTP) for the implementation of a RDP in Cantabria, Spain. Uncertainty in individuals’ preferences is explicitly acknowledged and introduced into our analytical framework. For that purpose, a comparison is made between the open-ended (OE) and the multiple bounded uncertainty (MBU) elicitation formats. According to our behavioural model estimates, the expectation of a positive welfare change for both rural and urban dwellers constitutes a sound argument in...

The Theoretical Structure of Producer Willingness to Pay Estimates

Palavras-chave: Rural development policy; Non-commodity outputs; Contingent valuation; Elicitation formats; Uncertainty; Agricultural and Food Policy; Q0; Q18; Q51; R0.

Ano: 2011

URL: http://purl.umn.edu/114437

Zapata, Samuel D.; Carpio, Carlos E..

This paper analyzes the theoretical underpinnings of producers’ willingness to pay (WTP) for novel inputs. In addition to conceptualizing the WTP function for producers, we derive its comparative statics and demonstrate the use of these properties to estimate input quantities demanded, outputs supplied, and price elasticities. We also discuss implications of the comparative statics results for the specification of empirical producer WTP models and survey design.

Tipo: Presentation

Palavras-chave: Cobb-Douglas production function; Contingent valuation; Price elasticities; New technologies; Survey design.; Agribusiness; Demand and Price Analysis; Environmental Economics and Policy; Production Economics.

Ano: 2012

URL: http://purl.umn.edu/123434

Adoption and Impact of Hybrid Wheat in India

Matuschke, Ira; Qaim, Matin.

In the light of ongoing debates about the suitability of hybrid seeds for smallholder farmers, this paper analyzes the adoption and impact of hybrid wheat in India. Based on survey data we show that farmers can benefit significantly from the proprietary technology. Neither farm size nor the subsistence level influence the adoption decision, but access to information and credit matters. Moreover, willingness-to-pay analysis reveals that adoption levels would be higher if seed prices were reduced. Given decreasing public support to agricultural research, policies should be targeted at reducing institutional constraints, to ensure that resource-poor farmers are not bypassed by private sector innovations.

Chapter 14: USING CONTINGENT VALUATION METHODS TO VALUE THE HEALTH RISKS FROM PESTICIDE RESIDUES WHEN RISKS ARE AMBIGUOUS

Palavras-chave: Hybrid wheat; India; Technology adoption; Contingent valuation; Crop Production/Industries.

Ano: 2006

URL: http://purl.umn.edu/25678

van Ravenswaay, Eileen O.; Wohl, Jennifer.

This book was originally published by Westview Press, Boulder CO, 1995.

Tipo: Book Chapter

Palavras-chave: Pesticide residues; Apples; Health risk; Contingent valuation; Willingness to pay; Food Consumption/Nutrition/Food Safety.

Ano: 1995

URL: http://purl.umn.edu/25983

Urban Water Restrictions: Attitudes, Information and Willingness to Pay

Cooper, Bethany; Crase, Lin.

In most urban cities across Australia, water restrictions remain the dominant policy mechanism to restrict urban water consumption. The extensive adoption of water restrictions over several years means that Australian urban water prices have consistently not reflected the opportunity cost of water (Edwards 2008). Given the generally strong political support for water restrictions and the likelihood that they will persist for some time, there is value in understanding householders’ attitudes in this context. More specifically, identifying the welfare estimate associated with avoiding urban water restrictions entirely would be a non-trivial contribution to our knowledge of the costs that attend them. This paper employs the results from the stated preference...

Chapter 05: CONTINGENT VALUATION OF HEALTH RISK REDUCTIONS FOR SHELLFISH

Palavras-chave: Urban water restrictions; Water policy; Contingent valuation; Community/Rural/Urban Development; Consumer/Household Economics; Demand and Price Analysis; Environmental Economics and Policy; Health Economics and Policy.

Ano: 2009

URL: http://purl.umn.edu/97168

Lin, Chung-Tung Jordan; Milon, J. Walter.

This book was originally published by Westview Press, Boulder CO, 1995.

Tipo: Book Chapter

Palavras-chave: Health risk; Shellfish; Contingent valuation; Willingness to pay; Food Consumption/Nutrition/Food Safety.

Ano: 1995

URL: http://purl.umn.edu/25971

Age, Health, and the Willingness to Pay for Mortality Risk Reductions: A Contingent Valuation Survey in Japan

Itaoka, Kenshi; Krupnick, Alan J.; Akai, Makoto; Alberini, Anna; Cropper, Maureen L.; Simon, Nathalie B..

A contingent valuation survey was conducted in Sizuoka, Japan, to estimate the willingness to pay (WTP) for reductions in the risk of dying and calculate the value of statistical life (VSL) for use in environmental policy in Japan. Special attention was devoted to the effects of age and health characteristics on WTP. We find that the VSLs are somewhat lower (103 to 344 million yen) than those found in the virtually identical survey applied in some developed countries. These values were subject to a variety of validity tests, which they generally passed. We find that the WTP for those over age 70 is lower than that for younger adults, but that this effect is eliminated in multiple regression. Rather, when accounting for other covariates, we find that WTP...

WILLINGNESS TO PAY TO AVOID HEALTH RISKS FROM PESTICIDES, A CASE STUDY FROM NICARAGUA

Palavras-chave: Willingness to pay; Value of statistical life; Mortality risk; Contingent valuation; Age; Risk and Uncertainty.

Ano: 2005

URL: http://purl.umn.edu/10829

Garming, Hildegard; Waibel, Hermann.

A contingent valuation approach to assess the health effects of pesticides among Nicaraguan vegetable farmers is presented. Farmers' valuation of health is measured as willingness to pay (WTP) for low toxicity pesticides. Results show, that farmers are willing to spend about 28% of current pesticide expenditure for avoiding health risks. The validity of results is established in scope tests and a two-step regression model. WTP depends on farmers' experience with poisoning, income variables and pesticide exposure. The results can help in targeting of rural health policies and the design of programmes aiming to reduce negative effects of pesticides.