Les étapes d’une expérience en économie expérimentale

This document applies to anybody who wants to understand what is Experimental Economics and the benefits that can profit from this approach for empirical works which validity and scope can be evaluated in a scientific work. In a pragmatic way are described in this document the different steps to be followed methodologically to set out an experiment. Our goal is to give our readers a broad view of an experimental process in economics. Further to the logistics aspects and data collection, this guide also tackles the tools used to work with data and the methodological referees that allow analysing the first results. It also reviews various animation support of the experimentalist community in France

Covid-19 Pandemic and Performance of Economic Sectors in Vietnam

Purpose of the paper: This study aims to consider the Covid impact on stock – price volatility of different industry groups in Vietnam by using the M-GARCH model

Covid-19 Pandemic and Performance of Economic Sectors in Vietnam

Purpose of the paper: This study aims to consider the Covid impact on stock – price volatility of different industry groups in Vietnam by using the M-GARCH model

Les étapes d’une expérience en économie expérimentale

National audienceThis document applies to anybody who wants to understand what is Experimental Economics and thebenefits that can profit from this approach for empirical works which validity and scope can be evaluated in ascientific work. In a pragmatic way are described in this document the different steps to be followedmethodologically to set out an experiment. Our goal is to give our readers a broad view of an experimentalprocess in economics. Further to the logistics aspects and data collection, this guide also tackles the tools usedto work with data and the methodological referees that allow analysing the first results. It also reviews variousanimation support of the experimentalist community in France

Les étapes d’une expérience en économie expérimentale

National audienceThis document applies to anybody who wants to understand what is Experimental Economics and thebenefits that can profit from this approach for empirical works which validity and scope can be evaluated in ascientific work. In a pragmatic way are described in this document the different steps to be followedmethodologically to set out an experiment. Our goal is to give our readers a broad view of an experimentalprocess in economics. Further to the logistics aspects and data collection, this guide also tackles the tools usedto work with data and the methodological referees that allow analysing the first results. It also reviews variousanimation support of the experimentalist community in France

The steps of an experiment in experimental economics

National audienceThis document applies to anybody who wants to understand what is Experimental Economics and the benefits that can profit from this approach for empirical works which validity and scope can be evaluated in a scientific work. In a pragmatic way are described in this document the different steps to be followed methodologically to set out an experiment. Our goal is to give our readers a broad view of an experimental process in economics. Further to the logistics aspects and data collection, this guide also tackles the tools used to work with data and the methodological referees that allow analysing the first results. It also reviews various animation support of the experimentalist community in France

Sharing rules for a common-pool resource in a lab experiment

Early Access APR 2022International audienceNatural resources such as water, for which the availability to users is random, are often shared according to predefined rules. What determines users’ choice of a sharing rule? To answer this question, we designed an experiment in which subjects: (1) vote on sharing rules; (2) choose the technology that transforms the resource into payoffs; and (3) respond to a survey on their adhesion to principles of fairness. We find that although subjects tend to vote for the sharing rule that is aligned with their self-interest, they become more egalitarian if they report their views on the fairness principles before voting. Furthermore, the adhesion to fairness principles affects the subjects’ votes not directly but rather indirectly through the choice of technology

Distributive Justice in the Field: How do Indian Farmers Share Water? *

We use a framed-field experiment to analyze the preferences of Indian farmers regarding water sharing. Farmers play a dictator game (DG) behind the veil of ignorance in which a limited quantity of water has to be allocated between two farmers. We vary the equity/efficiency trade-off by introducing some heterogeneity between farmers' productivity and by considering an upstream/downstream spatial configuration. We first show that generosity in the DG is high (on average, respectively 44% and 47% of the total quantity of water or the total profit are left by the dictator). Only a small proportion of farmers act in the DG as selfish profit maximizers, a majority of them adopting efficient, egalitarian in payoff or egalitarian in quantity behaviors. We then show that it is possible to induce more efficient water allocation behaviors in the DG by modifying farmer's choice architecture. A loss framing induces farmers to share more efficiently the water resource, but only when the most productive farmer is located downstream. On the contrary, we find mild evidence that farmers choose less often the efficient solution with a gain framing

The impact of incorrect social information on collective wisdom in human groups

International audienceA major problem that resulted from the massive use of social media networks is the diffusion of incorrect information. However, very few studies have investigated the impact of incorrect information on individual and collective decisions. We performed experiments in which participants had to estimate a series of quantities before and after receiving social information. Unbeknownst to them, we controlled the degree of inaccuracy of the social information through "virtual influencers", who provided some incorrect information. We find that a large proportion of individuals only partially follow the social information, thus resisting incorrect information. Moreover, we find that incorrect social information can help a group perform better when it overestimates the true value, by partly compensating a human underestimation bias. Overall, our results suggest that incorrect information does not necessarily impair the collective wisdom of groups, and can even be used to dampen the negative effects of known cognitive biases

Coopération et tromperie dans les groupes humains via des interactions stigmergiques

International audienceStigmergy is a generic coordination mechanism widely used by animal societies, in which traces left by individuals in a medium guide and stimulate their subsequent actions. In humans, new forms of stigmergic processes have emerged through the development of online services that extensively use the digital traces left by their users. Here, we combine interactive experiments with faithful data-based modeling to investigate how groups of individuals exploit a simple rating system and the resulting traces in an information search task in competitive or noncompetitive conditions. We find that stigmergic interactions can help groups to collectively find the cells with the highest values in a table of hidden numbers. We show that individuals can be classified into three behavioral profiles that differ in their degree of cooperation. Moreover, the competitive situation prompts individuals to give deceptive ratings and reinforces the weight of private information versus social information in their decisions.La stigmergie est un mécanisme de coordination générique largement utilisé par les sociétés animales, dans lequel les traces laissées par les individus dans un environnement guident et stimulent leurs actions ultérieures. Chez les humains, de nouvelles formes de processus stigmergiques ont émergé grâce au développement de services en ligne qui utilisent largement les traces numériques laissées par leurs utilisateurs. Dans cet article, nous combinons des expériences interactives avec une modélisation guidée par les données pour étudier comment des groupes d'individus exploitent un simple système de notation et les traces qui en résultent dans une tâche de recherche d'informations dans des conditions compétitives ou non compétitives. Nous constatons que les interactions stigmergiques peuvent aider les groupes à trouver collectivement les cellules présentant les valeurs les plus élevées dans un tableau de chiffres cachés. Nous montrons que les individus peuvent être classés en trois profils comportementaux qui diffèrent par leur degré de coopération. De plus, la situation compétitive pousse les individus à donner des notations trompeuses et renforce le poids de l'information privée par rapport à l'information sociale dans leurs décisions