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	Provedor de dados AgEcon (3) Autor Morawetz, Ulrich B. (3) De Groote, Hugo (2) Kimenju, Simon Chege (2) Haas, Rainer (1) Wongprawmas, Rungsaran (1) Palavra-chave Africa (1) BDM mechanism (1) Consumer (1) Consumer/Household Economics (1) Crop Production/Industries (1) D6 (1) Experimental auctions (1) Experimenter effect (1) First-price auction (1) Food Consumption/Nutrition/Food Safety (1) Household income (1) Income effect (1) International Relations/Trade (1) Kenya (1) Maize (1) Order effect (1) Organic agriculture (1) Q12 (1) Research Methods/ Statistical Methods (1) Stated preference (1) Mais... Tipo do documento Conference Paper or Presentation (2) Journal Article (1) Ano 2011 (1) 2007 (1) 2006 (1) País United States (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Comparing Accuracy and Costs of Revealed and Stated Preferences: The Case of Consumer Acceptance of Yellow Maize in East Africa AgEcon Kimenju, Simon Chege; De Groote, Hugo; Morawetz, Ulrich B.. For quite a while, stated preferences have been a major tool to measure consumer preferences for new products and services. Revealed preference methods, in particular experimental economics, have gained popularity recently because they have been shown to be more incentive compatible, and therefore more accurate. However, this advantage comes at the expense of higher survey costs. In the developing countries with limited funding for research, it is important to determine whether the extra cost can be justified by the extra gain in accuracy. A survey of 100 farmers was carried out in Western Kenya to determine consumer preference for yellow maize using the contingent valuation, choice experiments and experimental auction methods. Experimental auctions... Tipo: Conference Paper or Presentation Palavras-chave: Kenya; Maize; Consumer; Experimental auctions; Stated preference; WTP; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; D6; Q12. Ano: 2006 URL: http://purl.umn.edu/25642 Improving the Use of Experimental Auctions in Africa: Theory and Evidence AgEcon Morawetz, Ulrich B.; De Groote, Hugo; Kimenju, Simon Chege. Experimental auctions have not been widely used in Africa. However, auctions are important tools for evaluating new products and technologies. To increase the quality of these experiments, we explore an alternative first-price bidding mechanism that is more similar to African market exchanges and we analyze factors likely to affect bidding. Experiments with African consumers show that the proposed first-price mechanism has no advantage over conventional second-price mechanisms. Results show high and significant cash-in-hand, experimenter, and time of day effects in main rounds, and significant ordering effects in test rounds. These effects need to be carefully considered when applying the Becker-DeGroot-Marschak mechanism in Africa. Tipo: Journal Article Palavras-chave: Africa; BDM mechanism; Experimenter effect; First-price auction; Income effect; Order effect; Time of day effect; Research Methods/ Statistical Methods. Ano: 2011 URL: http://purl.umn.edu/117161 Potential income gains for rural households in North Eastern Thailand through trade with organic products AgEcon Morawetz, Ulrich B.; Wongprawmas, Rungsaran; Haas, Rainer. The study groups households in North Eastern Thailand according their income and grade of specialisation in crop production to derive representative household types. For these household types a linear optimization model is run to calculate net incomes under four scenarios. These are certified organic farming, organic farming in the initial and transitional phase and a self-sufficient farming. Simulations for the different management scenarios show that per ha cash profits are about double under certification while they can only be increased by 30 percent under self-sufficient farming, even under favourable assumptions. But transition costs to organic farming are high due to reduced yields at the beginning. According to the figures and model used, only... Tipo: Conference Paper or Presentation Palavras-chave: Organic agriculture; Thailand; Household income; Consumer/Household Economics; International Relations/Trade. Ano: 2007 URL: http://purl.umn.edu/7895 Registros recuperados: 3 Primeira ... 1 ... Última

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