Trading off health, environmental and genetic modification attributes in food

Hu, Wuyang; Hünnemeyer, Anne; Veeman, Michele M.; Adamowicz, Wiktor; Srivastava, L. S.

doi:10.1093/erae/31.3.389

Cited by 153 publications

(106 citation statements)

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“…This method has recently been employed in the agricultural context by Scarpa et al (2003a) for valuation of pig attributes in Mexico, and by Ruto (2005) for valuation of cattle attributes in Kenya. Hu et al (2004), Owen et al (2005) and Kontoleon and Yabe (2006) have employed the LCM to investigate the consumers' demand for GM food in Canada, Australia and the UK, respectively.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Farmer preferences formilpadiversity and genetically modified maize in Mexico: a latent class approach

Birol¹,

2009

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Abstract:Mexico is the centre of origin of maize. Maize is typically grown as part of a set of associated crops and practices called the milpa system, an ancient mode of production that is practiced today in ways that vary by cultural context and agro-environment. We use a choice experiment to estimate the farmers' valuation of three components of agrobiodiversity: crop species richness, maize variety richness and maize landraces. We include the option to cultivate genetically modified (GM) maize. Data were collected from 420 farm households across three states of Mexico. We analyze the heterogeneity of farmer preferences with a latent class model, which enables us to identify the characteristics of farmers who are most likely to continue growing maize landraces, as well as those least likely to accept GM maize. Summary:Mexico is the centre of origin of maize, the most globally important staple crop after wheat.Maize is typically grown as part of a set of associated crops and practices called the milpa system, an ancient mode of production that is practiced today in ways that vary by cultural context and agro-environment. Milpas generate both private economic value, in terms of food security, diet quality and livelihoods, to the two million farm households who manage them, as well as public economic value, in terms of conservation of agrobiodiversity, especially of maize landraces, which have the potential to contribute unique traits needed by plant breeders for future crop improvement, contributing to global food security in maize. Sustainability of the milpa system is threatened by the off-farm employment opportunities, especially, longdistance migration; increasing commercialisation and intensification of maize production, and most recently, by the contamination of the maize landraces by genetically modified (GM) maize, cultivation of which is currently prohibited in Mexico. We employ a choice experiment to estimate the farmers' valuation of three components of agrobiodiversity: crop species richness, maize variety richness and maize landraces. We include the option to cultivate GM maize. Choice experiment data, as well as household level social, economic and demographic data; community level economic development data; and data on milpa production characteristics, and farmers' attitudes and perceptions with regards to GM food and crops were collected from 420 farm households across 17 communities in three states of Mexico. We analyze the heterogeneity of farmer preferences with a latent class model, which can simultaneously identify the segments in the sample with homogenous preferences for milpa attributes, and the farmer characteristics, which affect preferences. By the use of this method we identified the characteristics of farmers who are most likely to continue growing maize landraces and managing milpa systems, as well as those least likely to accept GM maize. Specifically, three distinct segments of farmers are identified: (i) Landrace

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Section: Theoretical Frameworkmentioning

confidence: 99%

Farmer preferences formilpadiversity and genetically modified maize in Mexico: a latent class approach

Birol¹,

2009

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“…Scarpa et al [2005] applied this method to study preferences over water services attributes. Hu et al [2004] and Kontoleon and Yabe [2006] used the LCM to investigate consumers' preferences for food attributes. Aldrich et al [2007] estimated the heterogeneity over public's preferences for endangered species using LCM.…”

Section: Previous Literaturementioning

confidence: 99%

“…This coefficient on the wetland management plan attributes are multiplied by two since their binary levels were effects coded (see, Hu et al, 2004).…”

Section: Willingness To Pay Estimates For Wetland Management Plan Attmentioning

confidence: 99%

Optimal management of wetlands: Quantifying trade‐offs between flood risks, recreation, and biodiversity conservation

Birol

Hanley

Koundouri

et al. 2009

Water Resources Research

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[1] This paper employs a simple choice experiment to estimate the value of management options for the Bobrek wetland in Poland. The local public's valuation of several wetland management attributes, including flood risk reduction, biodiversity conservation and improvement of recreational access, are investigated. A latent class model is estimated to account for heterogeneity in the wetland management choices of the local public. The results reveal that there is considerable heterogeneity among the local public as two distinct segments are identified. For both of the segments, flood risk reduction, in the ranges considered, is more important than the other two attributes. The results of this study are expected to assist policy makers in undertaking effective flood risk reduction measures and formulating efficient, equitable and sustainable wetland management policies in accordance with the European Union's Water Framework Directive (2000/60/EC).

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“…Inclusion of this "opt-out" clause is significant in product evaluation as in "real purchase decisions" consumers can defer purchase or purchase elsewhere (Enneking, 2004;Hu et al, 2004). Prior to the choice question, the functioning of the experiment was explained to participants, indicating the pork Frankfurt sausages attributes included in the experimental design and their levels as well as the existence of a no-buy option for each choice.…”

Section: Market Implications Of New Regulations 261mentioning

confidence: 99%

Market implications of new regulations: impact of health and nutrition information on consumer choice

Barreiro‐Hurlé

Gracía

Magistris

2009

Span. j. agric. res.

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Consumer concern for health impacts of diet has increased the use of nutritional information and claims by agro-food industry. Under the current European legislation on nutrition and health claims and on nutritional labelling, three type of nutritional information can be provided on food products: nutritional facts panel, nutritional claims and health claims. In this context, the aim of the paper is to assess how much consumers' value the provision of three types of nutritional information in a meat product not precisely perceived as healthy, "pork Frankfurt sausages", using a choice experiment. The data comes from a survey conducted in two Spanish medium size towns (Zaragoza and Córdoba) during 2007. A mixed logit model is used to estimate the effect of the nutrition information attributes on consumers' utility and derive their willingness to pay. Results show that all three nutritional and health information items are valued by consumers, although preferences are heterogeneous. Health claims are significantly higher valued than nutritional attributes (facts panel or claim). Estimated market shares show that the use of any of the available labelling options will obtain significant market success even at prices including premiums above current price levels.Additional keywords: choice experiments, demand, health claims, nutrition claims, nutrition facts panel, sausages. ResumenImplicaciones en el mercado de una nueva regulación: el impacto de la información nutricional y de salud en la elección del consumidor La preocupación de los consumidores por los impactos de la salud de la dieta ha supuesto que la industria agroalimentaria haya incrementado la presencia de información nutricional y de salud en sus productos. La legislación comunitaria relativa a las alegaciones nutricionales y de salud, así como de etiquetado nutricional, permite la inclusión en los alimentos de tres tipos de información nutricional: composición nutricional, alegaciones nutricionales y alegaciones de salud. En este contexto, el objetivo del presente artículo es evaluar en qué medida los consumidores valoran la presencia de estos tres tipos de información nutricional en un producto cárnico utilizando la metodología de los experimentos de elección. La aplicación empírica se centra en un producto que no es percibido como saludable por los consumidores: las salchichas de cerdo cocidas tipo Frankfurt. Para ello se ha llevado a cabo una encuesta a consumidores en dos ciudades medianas españolas (Zaragoza y Córdoba) en el año 2007. Se han estimado los efectos de los distintos tipos de información sobre la utilidad de los consumidores a partir de un modelo de parámetros aleatorios, así como la disponibilidad a pagar por ellos. Los resultados obtenidos muestran que los tres tipos de información son valorados por los consumidores, aunque las preferencias son heterogéneas. Las alegaciones de salud son significativamente más valoradas que las fuentes de información relacionadas con nutrientes, ya sean como composición nutricional o como alegaci...

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Trading off health, environmental and genetic modification attributes in food

Cited by 153 publications

References 0 publications

Farmer preferences formilpadiversity and genetically modified maize in Mexico: a latent class approach

Farmer preferences formilpadiversity and genetically modified maize in Mexico: a latent class approach

Optimal management of wetlands: Quantifying trade‐offs between flood risks, recreation, and biodiversity conservation

Market implications of new regulations: impact of health and nutrition information on consumer choice

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