Serge Blondel

University of Angers | UA · Groupe de Recherche ANgevin en Economie et Management (GRANEM)

Background: In August 2021, France enacted a COVID-19 certificate requirement (vaccination/recovery/test) to access specific services, with mandates for professional groups. We evaluated the impact of this incentive-coercive policy in terms of vaccine uptake equality, future vaccine intention and confidence in authorities' crisis management. Meth...

Dilemmas related to the use of environmental resources concern diverse populations at local or global scales. Frequently, individuals are unable to visualize the consequences of their actions, where they belong in the decision-making line, and have no information about past choices or the time horizon. We design a new one-shot extraction game to ca...

À partir d’une enquête originale menée fin novembre 2020, nous identifions les déterminants socio-démographiques et comportementaux d’adhésion aux mesures contre la Covid-19. Notre analyse porte sur l’acceptation du télétravail, les intentions de vaccination et la confiance dans la gestion de la crise par les autorités. Le goût pour les actions col...

In this stated preferences study, we describe for the first time French citizens’ preferences for various epidemic control measures, to inform longer-term strategies and future epidemics. We used a discrete choice experiment in a representative sample of 908 adults in November 2020 (before vaccination was available) to quantify the trade-off they w...

In this stated preferences study, we describe for the first time French citizens' preferences for various epidemic control measures, to inform longer-term strategies and future epidemics. We used a discrete choice experiment in a representative sample of 908 adults in November 2020 to quantify the trade-off they were willing to make between restric...

A partir d’une enquête originale, nous identifions les déterminants socio-démographiques et comportementaux d’adhésion aux mesures contre la COVID-19 : télétravail, intention d’accepter la vaccination et confiance aux autorités dans leur gestion de la crise. La coopération dans le jeu du bien public est fortement et significativement associée à la...

The positive correlation between health share expenditures and COVID-19 case fatalities in a cross-section of 31 European countries is puzzling. The positive relationships is also detected in weighted OLS and IV models that control for many usual suspects of the COVID-19 mortality: (1) health indicators (personal risk factors, medical resources), (...

Nous présentons la mise en place d'une expérience lors d'un évènement grand public national, de manière simultanée dans 11 villes françaises, en septembre 2015. L'expérience a impliqué plus de 2700 participants et a duré quatre heures ininterrompues. L'objectif de cet article est à la fois de fournir une feuille de route pour une éventuelle réplica...

This new experiment suggests that there is no endowment effect in a case of choosing between lotteries, even if the subjects start with one of the options. The subjects seem to anticipate and integrate into their reference point (RP) the potential wealth increase. By assuming that the RP could be a lottery, third-generation prospect theory explains...

In Ivory Coast, the plantain sector is insufficiently organized. Is it due to the selfish behaviour of its agents? A field study was conducted to compare this sector with the sweet banana. The degree of altruism was measured via a repeated public good game. Agents of plantain appear more cooperative than their counterparts in sweet banana. The lack...

Risk management, theoretically a perfectly scientific practice, often follows a very different road after an incident. Framing effects change perspectives and behaviors after an event, and risk aversion is more prevalent. The application of Kahneman and Tversky’s prospect theory explains why “everything changes” when disaster strikes: the point of...

48 students participated in collective goods games, evaluated products in Vickrey auctions and completed several psychological questionnaires. They evaluated two types of apples (conventional and organic) and three types of pencils (conventional, ecological, and ergonomic). Subjects had to indicate their willingness to pay for each type of product...

Herein we consider indirect reciprocity in a new form of a sequential dictator game. We introduce a new inter-generational game where each player of a session N receives €4 and transmits one part (no more than €4) to a player of the next session. This part is then multiplied by two before being given to the next player. Our results suggest that dic...

Croatia joins European Union in 2012 : How can Croatia export efficiently in the Global Market ? The main aim of the article is to analyse how Croatia inserts in the world economy. As the world economy changes, the insertion strategy needs to change also. The country can’t any more choose an insertion based on export markets as well as choose an in...

The Contrat Territorial d'Exploitation (CTE), land use contract, was a significant experiment in France in the early 2000s. Farmers were offered financial incentives in exchange for more organic farming practices, as part of a sustainable development (SD) approach. Using a database of 462 farms in the Maine-et-Loire region, we tried to investigate...

Anomalies and paradoxes of food choices : The case of non-orange carrots New colours of carrots were used in an experimental design. Main anomalies of decision theory (disparity between selling and buying prices, preference reversal phenomenon) are obtained in the case of food decisions. The willingness to pay is a consistent measure of the buying...

1. Intergenerational CPR game 2. Experimental design 3. Results

New colours of carrots were used in an experimental design. Main anomalies of decision theory (disparity between selling and buying prices, preference reversal phenomenon) are obtained in the case of food decisions. The willingness to pay is a consistent measure of the buying behaviour of the consumer. Finally, we conclude that the white and yellow...

Many people vote in large elections with costs to vote although the expected benefits would seem to be infinitesimal to a rational mind. We exhibit two necessary conditions that a theory of rational decision must satisfy in order to solve the paradox. We then show that prospect and regret theories cannot solve it because each theory meets either on...

Preference reversal (PR) phenomenon appears not restricted to the standard version, where the order of preference, for two lotteries, is inconsistent between choosing and pricing. PR is observed also with a single lottery (PR1). Although regret theory (Loomes and Sugden, 1983, AER) and third generation of prospect theory (Schmidt et al., 2008, JRU)...

In rational addiction theory, higher discount rates encourage drug use. We test this hypothesis in the general framework of rationality and behaviour under risk. We do so using an experimental design with real monetary incentives. The decisions of 34 drug addicts are compared with those of a control group. The decisions of drug users (DU) are not a...

In agriculture, there is need for a deeper analysis of management of climate risks, because the farmers appear to have a paradoxical position: they perceived that they are strongly exposed to climate risks but, they do not want to pay for adapted tools, arguing that this is too expensive or complex. However, under risk, it is well-known that the de...

In horticulture, ornamental production is often considered as less organized than that of fruits and vegetables. Is this result due to their individualistic behavior or to the economic context? We compare, with an experimental design, the decisions of the producers of both supply chains in order to bring first conclusions. The level of contribution...

Generalisation of expected utility : the case of lotteries in France. We take as starting point a stylised fact identified since Friedman and Savage (1948) : the poorer people are the more they gamble. This conclusion is to be found in the case of lotteries in France. It can be explained in the framework of expected utility (EU) theory, but only on...

The method introduced here allows us to use a data set with a non-restricted number of outcomes, here 21. Hence, our method complements the other ones developed in the domain of the probability triangle. Individual parameters are estimated for expected utility and various non-expected utility theories. We use CRRA and CARA utility functions, both w...

Cognitive dissonance or cognitive consistency theory, as we understand it, does not presume irrational behavior although it is inconsistent with normative rationality. Previous discussions have overlooked that cognitive dissonance implied dynamic uncertainty. Once this dimension of choice is restored, it becomes obvious why normative rationality do...

Les recherches dans ce rapport concernent trois types d'étude: l'analyse théorique des déterminants socio-économiques de la consommation de drogue et, plus généralement,de produits provoquant une dépendance psychologique qui génère une consommation future plus au moins contrainte; l'étude empirique des modèles ainsi développés sur des enquêtes spéc...

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Cognitive dissonance or cognitive consistency theory, as we understand it, does not presume irrational behavior although it is inconsistent with normative rationality. Previous discussions have overlooked that cognitive dissonance implied dynamic undertainty. Once this dimension of choice is restored, it becomes obvious why normative rationality do...

Supposer que la diversite des choix correspond a des erreurs par rapport a un modele entraine des termes d'erreurs econometriques trop importants. Nous supposons au contraire que les individus ont des fonction encodees par des parametres individuels. A l'issue d'une simulation stochastique, les distributions des parametres propres a chaque theorie...

We show two non-standard cases of preference reversal (PR) between choices and valuations of lotteries. PR patterns are not the same whether asking prices or buying prices are used to elicit values, a finding which is not explained by contingent weighting theory. Moreover, PR also occurs when a single lottery is confronted with a sure gain, a findi...

Many people vote in large elections with costs to vote although the expected benefits would seem to be infinitesimal to a rational mind. We show that prospect and regret theories cannot solve this paradox of not voting and may even aggravate it. However, if the possibility of a decisive vote comes to mind, expected utility maximizers will doubt the...

Many people vote in large elections with costs to vote a lthough the expected benefits would seem to be infinitesimal to a ration al mind. We show that prospect and regret theories cannot solve this paradox of not voting an d may even aggravate it. However, if the possibility of a decisive vote comes to mind, expec ted utility maximizers will doubt...

Generalised Expected Utility Theories are estimated using three different data sets. We used the Maximum Score (MSE) method. The Akaike Information Criterion has been applied for proper ranking of the theories. CR RA utility function was undertaken for the estimation of individual functional forms. Both restricted and Non- restricted data sets are...

Mémoire de DEA : Economie mathématique et économétrie / Paris 1 ; année universitaire 1992.