Ethical Consumerism: A View From the Food Industry in Morocco

Both consumers and firms are now more concerned about ethics as a way to make business transactions a win–win deal. As consumers ensure profitability to businesses, they expect fair practices and honest behaviors toward society. The study reported here attempts to investigate Moroccans’ perceptions and attitudes toward ethical consumerism of food. Consumers’ willingness to buy those products and their motives for such purchases as well as factors preventing ethical purchases is investigated. Besides price, which drives most their decision to buy a food or not, Moroccans are driven by ethical claims such as “healthy,” “no fat,” “pasteurized,” etc. It was shown that consumers trust information on the labels of products besides information provided by consumer authorities. In relation to ethical aspects, Moroccans are mostly concerned about the environment and religion. Older men with high income are shown to be a good target for the ethical food market.     

AIDS,Economic Growth and the Epidemic Trap in Africa

Most studies find that AIDS has a relatively weak impact on economic growth because they assume that it affects only one flow variable and only in the short term (the flow of labour available and capable of working at a time t in the economy). But AIDS also has a long-term impact on stock variables that existing models do not take into account, specifically, on both human and physical capital. Integrating these two impacts in a growth model with multiple accumulation factors reverses the findings of standard impact evaluations. A fairly wide range of epidemic effects modifies the economy's long-term growth regime, creating what we might call an epidemic or regressive “trap”. Government action should be designed in view of this risk and should intervene preferentially in favour of human capital, through health and educational spending. Finally, this model changes the cost-efficiency calculations about expanding antiretroviral therapies to a large part of the working population and indicates that such treatment is substantially more cost-efficient than initially thought.     

Evaluating the performance drivers of French ski resorts: A hierarchical approach

This paper aims to analyse the operational performance of French ski resorts by using data envelopment analysis models. The findings show that the hierarchical category data envelopment analysis is more appropriate than the standard one as it takes into account heterogeneity. The impact of the business environment (size, ownership, elevation, and location) on performance level is assessed with efficiency scores that are significantly higher for smaller ski resorts, those that are public managed, and those located at medium elevations. In addition, the results highlight a statistical relation between ski resort location and performance. Finally, the implications of the results and future research perspectives are discussed.     

Optimal Redistribution with Endogenous Social Norms

In this paper, we examine the effect of social norms on redistributive policies, where social norms are reflected in the degree of work participation among the different skill classes. Participation is driven both by the material incentives and heterogeneous preferences for leisure of each skill class, and by an endogenous social norm. Results for optimal redistributive taxation show that when the social norm enters as a benefit or cost for participants, participation taxes are generally lower than in its absence. Multiple participation equilibria can occur, and an engineered shift from a low‐ to a high‐participation equilibrium can be Pareto‐improving in the long run.     

Economics is not always performative: some limits for performativity

The phenomenon of performativity has recently sparked debates about the status of the economic discourse. This paper aims to discuss the subjectivist idea that if economics ‘performs’ (shapes) social reality, rather than merely reflects it, then every theory can be considered ‘true.’ My main goal is to point out three limits of performativity. First, not all theories can be performative since some do not produce empirical landmarks for agents. Second, social institutions restrict performativity. Third, I emphasize the necessity that a theory to be self-fulfilling. This article is a prelude to a new kind of performative studies based on an original definition: a theory performs the world if it implies a behavioral regularity which leads to a general coordination between agents. That is to say, if it becomes a convention à la David Lewis.     

Duality of welfare and profit maximization

Many economists are aware that the conditions for the efficiency and monopolization in a partial equilibrium framework are the extremes of the Ramsey–Boiteux formula when the Lagrange multiplier for the budget varies. We formalize the duality existing between the welfarist and monopolist constrained maximization programs by proving the following “folk theorem”:      

A model of repeat advertising

Advertising conveys information not only about product characteristics but also about the number of consumers who know about the product. More advertising may shift expectations towards a larger consumer base, increasing buyers' valuation when there are consumption externalities.     

A war of attrition with endogenous effort levels

This paper extends the classic war of attrition to allow for a wide range of actions. Players alternate making arbitrary payments, and their opponent may either match this payment, or concede. We analyze both cases of complete and incomplete information. As opposed to the classic war of attrition, the equilibrium is unique, rent-dissipation is only partial, and weaker (lower valuation) players concede more quickly than stronger players.     

Budget impact analysis of a novel gene expression assay for the diagnosis of malignant melanoma

Background:

Traditional pathology techniques alone can be insufficient to reliably distinguish between malignant melanoma, dysplastic nevi, and benign nevi in biopsies of suspicious pigmented lesions. Numerous studies have shown high rates of ambiguity when assessing such samples. A novel gene expression assay has been developed to objectively differentiate malignant melanoma from benign nevi.

Objective:

The purpose of this study was to quantify the economic impact of the gene expression assay on a US commercial health plan.

Methods:

The clinical paradigm of care was modeled for a hypothetical cohort of patients with suspicious pigmented lesions that are difficult-to-diagnose. Costs were assigned to each unit of care provided based on 2013 Medicare fee-for-service rates. Patients were followed for 10 years and were modeled to progress according to the natural history of their disease. The total cost of care was calculated for two scenarios: a Reference Scenario, representing current clinical practice, and a Test Scenario, in which each lesion was tested with the gene expression assay and diagnosed. Total cost of care was compared between the two scenarios to determine overall budget impact. Sensitivity analyses were performed to test the robustness of the model.

Results:

The gene expression assay reduces costs by $1268 per patient tested over 10 years, a decrease of 8.3%, after accounting for the cost of the assay. For a health plan with 10 million members, this would translate to over $8 million in savings. The largest portion of this saving comes from reducing the number of missed melanomas, which would otherwise progress to advanced disease. In sensitivity analyses, no single model input changed within a reasonable range of values caused the model to show that the assay was not cost-saving.

Conclusion:

In addition to improving the diagnosis of melanoma, this gene expression assay would likely reduce costs for health plans that choose to cover it.