Functional food,uncertainty and consumers’ choices: A lab experiment with enriched yoghurts for lowering cholesterol

A lab experiment was conducted in France to evaluate the impact of health information on consumers’ choices for functional food. Successive messages revealing benefits and uncertainties of consuming yoghurts with added plant sterols for reducing cholesterol were delivered. Results show a significant and positive influence of the message linked to the cholesterol reduction on willingness to pay, even for participants without cholesterol. However participants expressed little interest in information about potential risks and scientific uncertainties, since their impacts on willingness to pay are not always statistically significant. An econometric estimation shows a significant link between the change in willingness to pay and the perception by participants regarding the scientific validity linked to the sterols.     

Dependency traps in self‐targeting food aid programs

We present an economy of farmers where food aid is warranted due to poverty traps triggered by nonconvex production sets. We model a food‐aid intervention as a dynamic game between a food‐aid manager and the farmers in a context of asymmetrical information. The food‐aid manager is motivated by a relief objective and targets farmers suffering the poverty trap. The food‐aid manager uses a self‐targeting mechanism by providing the aid through a food wage in exchange for participation in the intervention's activities. Guided by the relief objective and targeting constraint, he fixes the food wage equal to the reservation wage of the farmers not suffering the poverty trap. Dependency traps will then happen every time there is a considerable technological and nutritional gap between farmers who are in and out of the poverty trap. When there is a gap, poor farmers earn more working for the reservation wage of the well‐off farmers than by working in their own farm. Dependency can be overcome only if the food‐aid program allows farmers to upgrade their productive technologies and catch up with those farmers who are out of the poverty trap.     

Health information and substitution between fish: Lessons from laboratory and field experiments

This paper compares results from a lab experiment and a field experiment conducted in France to evaluate the impact of health information on fish consumption. In both experiments, health information concerns a benefit (omega 3) and a risk (methylmercury). While the lab experiment focuses on two species, namely canned tuna and canned sardines, the field experiment offers a complete measure of the information impact on the choice of various species by consumers. Results from both experiments showed a significant preference change against canned tuna. In the lab experiment, the preference change was reflected by a decrease in WTP, while in the field experiment the preference change was reflected by a decrease in consumption. In the field experiment, among all fish consumed, only the decrease in consumption of canned tuna was statistically significant. A model calibrated to represent the demand for canned tuna allows for a comparison between the two experiments. It shows that the lab experiment suggests a smaller decrease in canned tuna demand compared to the field experiment.     

Consumer demand for healthy eating considering diversity – an economic approach for German individuals

Rising incidence and costs of diet‐related diseases have led to nutritionists' and economists' interest in factors determining the demand for healthy eating. The present study analyses the demand for healthy eating by the use of a new food‐based indicator, which combines the health value and diversity of a food basket. Although the diversity aspect gains in importance in recommendations for healthy eating it was not considered adequately in healthy eating indicators until now. Within the household production theory the new indicator is used to identify factors influencing the demand for healthy food diversity for 3220 German individuals. The results of regression analyses show that the demand for a healthy diet is influenced by age and mainly by knowledge, attitudinal and behavioural (proxy‐)variables as education level, participation in a health training course and sport activity. On the basis of these findings conclusions are drawn for health and nutrition policy in Germany and Europe.     

Methodological Issues in the Design of Online Surveys for Measuring Unethical Work Behavior: Recommendations on the Basis of a Split-Ballot Experiment

In recent years, there has been an increasing interest in unethical work behavior. Several types of survey instruments to collect information about unethical work behavior are available. Nevertheless, to date little attention has been paid to design issues of those surveys. There are, however, several important problems that may influence reliability and validity of questionnaire data on the topic, such as social desirability bias. This paper addresses two important issues in the design of online surveys on unethical work behavior: the response scale for questions regarding the frequency of certain types of unethical work behavior and the location of the background questions in an online survey. We present the results of an analysis of a double split-ballot experiment in a large sample (n = 3,386) on governmental integrity. We found that, when comparing response scales that have labels for all categories with response scales that only have anchors at the end, the latter provided answers with higher validity. The study did not provide support for the conventional practice of asking background questions at the end.     

An integrated scenario analysis for the metal coating sector in Europe

Although new paint products and technologies have been developed, the sector of paint application still contributes substantially to total volatile organic compound (VOC) emissions. Recent environmental legislation, especially the EU Solvent Emission Directive 1999/13/EC and its transposition into national law, coming into force in 2007, will have an important influence on the sector structure and the associated supply chain, especially for small- and medium-sized enterprises (SMEs). This paper summarises a comprehensive scenario analysis to explore possible future trajectories for the sector. The main focus is on paint application activities, considering in particular the consequences of new environmentally friendly products and technologies which can be used by SMEs. Four different scenarios representing possible future states of the sector are evaluated, taking into account environmental, technical and socio-economic aspects along the associated supply chain and life cycle. The scenarios allow the formulation of recommendations and guidelines for policy makers and industries. This example confirms that interdisciplinary scenario analysis is a suitable approach to investigate possible future development of an industrial sector.     

Infectious Disease, Productivity, and Scale in Open and Closed Animal Production Systems

Trade in feeder animals creates externalities when animal diseases can spread beyond the purchasing farm. If growers choose between open and closed production systems, then Nash equilibrium likely involves excessive trading. While first-best equilibrium involves market-wide adoption of either an open-trade or closed-farm system, equilibrium may entail heterogeneous systems. If so, then the feeder trade should be restricted. Supply response to an increase in marginal costs may be positive. Within a farm, infectious disease risk can create decreasing returns to scale when the technology is otherwise increasing returns. Contractual procurement and damage control technologies will likely increase scale in finishing.     

Toward a theory of transformative entrepreneuring: Poverty reduction and conflict resolution in Rwanda's entrepreneurial coffee sector

This study illustrates how entrepreneurship may catalyze prosperity as well as peace in entrenched poverty–conflict zones. We bring to life a conceptualization of transformative entrepreneuring by assessing interrelationships between poverty and conflict indicators from the perspective of rural dwellers in Rwanda's entrepreneurial coffee sector. Our findings suggest that individuals' perceptions of poverty alleviation and conflict reduction are sequentially linked, notably via increased quality of life. This enables us to advance theory on entrepreneuring by unpacking the mechanisms through which entrepreneurial processes may transform the lives of such ‘ordinary’ entrepreneurs in settings where economic and social value creation are desperately needed.     

Setting priorities in farm animal conservation choices--expert opinion and revealed policy preferences

We consider the choice of farm animal breeds for conservationprogrammes. An expert survey among breed societies and scientistsand the analysis of past decisions in EU member countries toenter breeds into conservation programmes show differences inthe valuation of breed characteristics. Whereas both sets ofactors value diversity aspects as well as cultural and economicaspects of breed conservation, policy makers, in comparisonwith experts, seem to be less concerned about true extinctionrisk. The results suggest broadening the discussion about theconservation of animal genetic resources to aspects preservingsocietal and cultural resources.