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[hal-04271386] Discrimination against people with mental, physical or visual disabilities in the French rental housing market: field experiment
We implement correspondence testing to detect and assess the extent of discrimination against people with disabilities in the French rental housing market. By sending 1,750 emails in a matched-pair procedure, we provide evidence of significant and extensive discrimination against blind people with a guide dog, individuals with mental disabilities, and individuals with motor impairments in the process of rented housing allocation. However, the primary cause of discrimination against blind individuals appears to stem from the presence of the guide dog, rather than the disability itself. Our results are also consistent with the presence of statistical discrimination (particularly based on financial means). We find that absolute discrimination against disabled applicants increases in accordance with the level of rent, while real estate agents discriminate significantly less against disabled applicants than private landlords.
ano.nymous@ccsd.cnrs.fr.invalid (Alexandre Flage) 06 Nov 2023
https://institut-agro-dijon.hal.science/hal-04271386v1
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[hal-05110567] Why do we keep killing crows? Farmers’ attachment to a controversial method in an attempt to protect their crops
Corvids are responsible for important damage to spring crops across western Switzerland and have become a significant concern for the farming community. Various prevention methods have been tested to reduce agricultural losses, but no suitable solution has been found. In an attempt to solve this problem, the Swiss farming community is asking the authorities, despite its relative unpopularity, to liberalize control shooting. However, the effectiveness of this control method has never been scientifically proven, and the few studies in ecology or conservation biology that question its efficiency are not considered by the farming community. This raises the question of why the attachment to an uncertain and controversial method is so strong. By bringing out the farming community's dominant representation of the problem of corvid damage and analyzing the stakeholder network dynamics, this article aims to highlight the social logics and multifactorial dimension of choosing a control method. We found that the fight against corvid damage is part of a more general conflict that pits the farming community against the rest of society on issues of ecology and production. Various social, cultural and cognitive logics lead the farming community to remain attached to control shooting, making a cognitive gamble that has no solid scientific basis. To succeed in getting farmers to abandon control shooting, three conditions must be met: the emergence of a replacement innovation, awareness of the negative practical, economic and ethical aspects of control shooting, and improved access to scientific knowledge on the subject in the farming world.
ano.nymous@ccsd.cnrs.fr.invalid (Juliette Craplet) 13 Jun 2025
https://institut-agro-dijon.hal.science/hal-05110567v1
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[hal-05175451] La comptabilité agricole : un savoir gestionnaire détourné au profit d’une agriculture paysanne
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Florian Sanguinet) 22 Jul 2025
https://hal.science/hal-05175451v1
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[hal-05162320] Quand la transition écologique redéfinit le travail : transformation des conditions de travail et impacts sur la santé des exploitant·e·s
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Delphine Thivet) 15 Jul 2025
https://hal.science/hal-05162320v1
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[hal-05158840] Modéliser pour écologiser. Configurations sociotechniques et devenir-algorithme des experts agronomes
Modéliser pour écologiser. Configurations sociotechniques et devenir-algorithme des experts agronomes.
ano.nymous@ccsd.cnrs.fr.invalid (Victoria Brun) 11 Jul 2025
https://hal.science/hal-05158840v1
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[hal-05191851] Decoding France’s food environment combining data bases to characterize the food environment in France
The dataset presented here draws on several French institutional database sources. The aim is to develop a nationwide database of food outlet locations that can be automatically enriched and updated with a high level of reliability. To this end, we created a flexible and dynamic Python script that can be widely utilized by a maximum of users. Data can be updated either on a daily basis to create a series of files within a limited timeframe, or on a monthly basis to reflect updates to the SIRENE 3.11 database of the national statistical institute INSEE. Starting from SIRENE 3.11, we enriched the data using the Alim’ Confiance (Ministry of Agriculture) and the Les Professionnels Engagés en Bio (organic farmers) databases. We were also able to enhance the accuracy of food environment description by identifying food outlets currently closed, exploiting the BODACC (official trade bulletin) database with its almost daily updating. These data provide valuable support for studies on the food environment at both macro and micro levels. The database’s wide range of scales makes it possible to map food sales and distribution outlets, a prerequisite to any investigation of food environments in a given territory.
ano.nymous@ccsd.cnrs.fr.invalid (Quentin Creurer) 29 Jul 2025
https://hal.inrae.fr/hal-05191851v1
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[hal-05183738] Elevage : un travail passion débordé par le changement climatique
Souvent inscrit dans une trajectoire familiale, le métier d’éleveur de bovins est choisi par passion (Jacques-Jouvenot, 2014). Il est majoritairement exercé par des « chefs d’exploitation », apparentant l’activité aux travailleurs indépendants et associé à une grande autonomie. Or le travail y est mis à l’épreuve d’un jeu de contraintes multiples : politique agricole commune, règles d’installation, volatilité des marchés, critique sociétale. Par ailleurs, soumise aux astreintes quotidiennes (alimentation, traite) ou périodiques (période des mises bas, cultures et récoltes), la durée de travail hebdomadaire atteint en moyenne de 61 heures/ semaine (Midler et al., 2019). A ces contraintes fortes, s’en ajoute une autre, première, qui caractérise la plupart des métiers agricoles : les conditions météorologiques et climatiques pèsent très fortement sur le bon déroulement des activités comme sur le niveau de production de l’exploitation. Cette communication s’emploiera à monter la façon dont le changement climatique, notamment dans ses événements extrêmes (pluies ou sécheresses prolongées), affecte le travail au quotidien et le sens du métier d’éleveur. Elle repose sur 40 entretiens semi-directifs menés auprès d’éleveurs français spécialisés bovins-lait et bovins-viande en Bourgogne Franche Comté. Ainsi, le changement climatique repousse davantage les limites du travail d’élevage : l’amour du travail suffit-il ? Il interroge les éleveurs sur le sens de leur métier à la fois en termes de « contexte » et de « perspective directionnelle » (Spoljar, Dupré, Depoudent, 2024). Trouveront-ils les ressources cognitives et matérielles pour s'adapter à des contextes de travail changeants voire éprouvants ? Pourront-ils se projeter dans leur activité alors que les conditions de travail deviennent incertaines ?
ano.nymous@ccsd.cnrs.fr.invalid (Lucie Dupre) 24 Jul 2025
https://hal.inrae.fr/hal-05183738v1
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[hal-05142965] Vers une base de données spatialisées nationale de l'offre commerciale alimentaire en France
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Simon Vonthron) 03 Jul 2025
https://hal.inrae.fr/hal-05142965v1
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[hal-05174910] « Si vraiment j’avais un objectif environnemental je serais passé au bio ». Ethnocomptabilité d'une écologisation agricole ordinaire
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Florian Sanguinet) 21 Jul 2025
https://hal.science/hal-05174910v1
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[hal-05164665] Estimation of spatial panel data models with random effects using Laplace approximation methods
This paper proposes using integrated nested Laplace approximations (INLAs), a full Bayesian approach, for estimating spatial panel data models with random effects. These models encompass Anselin's model, Kapoor's model and the generalised spatial random effects model. We show that a spatial autoregressive process in the error terms is a special case of Gaussian Markov random fields (GMRFs), thereby reducing computational costs. The computational benefit is further enhanced through the use of INLAs to compute the posterior marginals of model parameters. Finite sample properties of the INLA-GMRF approach are assessed through comprehensive Monte Carlo simulations. We also compare its computational efficiency with classic estimation methods. Finally, we demonstrate this approach with an empirical study on renewable energy production in China.
ano.nymous@ccsd.cnrs.fr.invalid (Yuheng Ling) 16 Jul 2025
https://hal.inrae.fr/hal-05164665v1
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[hal-05164621] Valuing habitat provision and aesthetic ecosystem services in built environments: landscape visibility and connectivity indicators in a choice experiment study
This paper aims to value habitat provision and aesthetic ecosystem services and to study the compatibility of these seemingly unrelated services in greater depth and more systematically than is often the case. We use landscape visibility metrics and indicators as common inputs for both valuations. To better understand the origin of public preferences for urban landscape and to provide meaningful valuation for landscape planning policy, we integrate visual and ecological indicators in a choice experiment study. Our methodology is applied to the landscape of C & ocirc;te-d'Or in France. Mixed logit models are employed to incorporate random taste heterogeneity. By placing landscape ecology metrics at the heart of the stated preference framework, this article seeks to bridge the gap between landscape ecology and non-market valuation, with an eye to promoting ecological services rendered by urban landscapes while maximising social welfare.
ano.nymous@ccsd.cnrs.fr.invalid (Thao Pham) 16 Jul 2025
https://hal.inrae.fr/hal-05164621v1
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[hal-05164552] The social stratification of homeowners’ housing wealth: Bringing a dynamic approach through the price gap index
The spatio-temporal variation of housing prices is central to unveiling the distribution of housing wealth (HW) across social groups. This paper presents a price decomposition framework to analyze the social differentiation of HW in terms of housing characteristics, location, and transaction date across labor-based occupational categories (OCs) of homeowners. Beyond variegated housing prices and capital gains, we highlight the importance of the concept of Price Gap Index (PGI)—the difference between average buyer and seller prices for each OC—to capture the redistribution of HW induced by housing transactions. Using data over two decades (1998–2017) for the French region Bourgogne-Franche-Comté , we find that static HW differences reflect the usual social hierarchy of the labor market. However, the PGI from a dynamic decomposition shows more regressive results of HW accumulation across OCs than the capital gains computed from the usual housing price index over time. These results confirm that spatial dynamics in the housing markets are an important generator of inequality, acting through the redistribution of HW during housing transactions.
ano.nymous@ccsd.cnrs.fr.invalid (Jean-Sauveur Ay) 16 Jul 2025
https://hal.inrae.fr/hal-05164552v1
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[hal-05055186] Zones à faibles émissions : au-delà de verdir l’automobile, un levier vers les mobilités durables
Les zones à faibles émissions (ZFE) cristallisent la controverse en France, alors que leur suspension est discutée à l’Assemblée nationale. Souvent présentées comme un outil permettant de verdir le parc automobile, potentiellement aux dépens des populations défavorisées résidant en périphérie, elles sont avant tout un levier permettant le développement des mobilités durables. Une étude récente menée dans l’agglomération grenobloise montre que la frange de la population impactée sans alternative est très faible et qu’elle pourrait bénéficier de mesures d’accompagnement ciblées.
ano.nymous@ccsd.cnrs.fr.invalid (Sandrine Mathy) 04 May 2025
https://hal.science/hal-05055186v1
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[hal-05164586] Impact of migration status on employment quality: causal empirical evidence for Tunisian migrants
This article examines the causal impact of migration status on employment quality among Tunisian migrants, focusing on those who migrated after the 2011 revolution, a period characterized by both intensified migration flows and a transformation in the profile of migrants, driven by political and economic shifts. Using data from Tunisia's first national survey on international migration, an endogenous treatment effects model addresses the endogeneity between migration status and employment quality, which is measured through a comprehensive composite indicator covering aspects such as social protections, access to health insurance, paid leave, and retirement benefits. The results indicate that irregular migration significantly reduces the quality of employment compared to regular or binational migration. Irregular migrants face greater challenges in securing benefits such as health coverage and retirement plans. However, the impact is heterogeneous and varies notably by host country, with irregular migrants in France, the main destination country of Tunisian migrants, experiencing somewhat better outcomes than those in other countries. The findings highlight the need for policy interventions to improve regularization pathways and migrant employment conditions.
ano.nymous@ccsd.cnrs.fr.invalid (Fares Ben Youssef) 16 Jul 2025
https://hal.inrae.fr/hal-05164586v1
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[hal-05053988] Insights into the biotic factors driving the outcome of coalescence events between soil bacterial communities
Coalescence events, which consist in the mixing of previously separated communities, are frequent in nature or as a result of human activities. Despite recently gaining attention as a tool to test ecological theories and engineer microbial communities, little is known about the factors that influence the outcome of such coalescence events. Here, we evaluated the relative importance of three community properties—namely, diversity, composition, and density—in determining coalescence outcome and biotic interactions among members of the coalescing bacterial communities. We found that manipulation of the density and composition of soil bacterial community resulted in the largest shifts in the structure of the resulting coalesced communities, explaining 24.7% and 6.8% of the variance in the β-diversity of the coalesced communities, respectively. Coalescence events impacted up to 35% of the dominant Operational Taxonomic Unit (OTUs) in the native community, with a predominance of negative effects. Our results also revealed that community density had the greatest explanatory power for the variance in the relative abundance of the OTUs negatively affected by coalescence events. In particular, all significantly affected OTUs that belonged to the Bacillales exhibited a decrease in relative abundance in several of the coalesced communities, which was related to the density of some members of the α-Proteobacteria and γ-Proteobacteria in the manipulated community suspensions. Overall, our data suggest that community density and composition were the main properties determining the outcome of coalescence events and that coalescence experiments can offer insights into multi-species interactions in complex environments.
ano.nymous@ccsd.cnrs.fr.invalid (Sarah Huet) 02 May 2025
https://hal.science/hal-05053988v1
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[hal-05108807] Can cooperation reduce the environmental impact of Local Food Supply Chains ? : An interdisciplinary research between social and environmental sciences
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Berline Africa Maagoum Soh) 12 Jun 2025
https://institut-agro-dijon.hal.science/hal-05108807v1
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[hal-05151332] Le sanglier dans la lutte des chasses De la diffusion de la « chasse-gestion » à l’accaparement bourgeois des forêts et des animaux
Dans les forêts du nord-est de la France, la diffusion de la « chasse-gestion » – une norme environnementale visant à maximiser les populations de sangliers – a profondément transformé les pratiques cynégétiques et les rapports de classe entre chasseurs. À travers une double enquête ethnographique menée à plus de dix ans d’intervalle dans le même massif forestier, cet article analyse comment la rationalisation de la chasse a favorisé l’embourgeoisement des groupements de chasseurs et accentué les divisions au sein des classes populaires.
ano.nymous@ccsd.cnrs.fr.invalid (Benoît Coquard) 08 Jul 2025
https://hal.science/hal-05151332v1
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[hal-05111276] Contre-culture, écopsychologie et masculinisme. Itinéraire d'une reconversion dans la baie de San Francisco
A partir du début des années 1990 en Californie, l’écopsychologie et l’écothérapie se développent autour de l’idée selon laquelle l’esprit humain a partie liée avec le monde naturel : notre psyché serait affectée par la violence que nous infligeons à la Terre, et seule une reconnexion profonde à la nature, souvent par des rituels présentés comme « chamaniques » pourrait nous apporter le bien-être psychologique. Qui sont les acteurs qui promeuvent ces discours, et qu’est-ce que cela leur permet de faire ? Cet article rappelle tout d’abord combien l’écopsychologie émerge dans un contexte particulier: le double héritage de John Muir et de la contre-culture des années 1960. Le cas d’un acteur ordinaire de l’écopsychologie californienne, Shepherd Bliss, permet ensuite de comprendre comment, dans ce contexte, peuvent se construire des carrières à l’interface de mondes a priori éloignés. Dans ces approches, le fait de réenchanter la nature s’appuie sur des recettes éprouvées pour réenchanter la masculinité.
ano.nymous@ccsd.cnrs.fr.invalid (Eric Doidy) 13 Jun 2025
https://hal.science/hal-05111276v1
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[hal-05022473] Review and challenges in the economic valuation of green spaces
Green spaces provide a variety of ecosystem services to society and the environment. This paper provides an overview of the literature on the valuation of green spaces, focusing on their advantages and limitations. We conclude with a number of challenges ahead.
ano.nymous@ccsd.cnrs.fr.invalid (Capucine Chapel) 06 Apr 2025
https://hal.science/hal-05022473v1
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[hal-05124696] Impacts sur la santé publique de la dynamique des populations de renards
Le Renard roux (Vulpes vulpes) est une espèce de la faune sauvage. En tant que gibier, il peut être chassé par différents moyens. Il est de plus susceptible d’être inscrit, dans certains territoires, comme espèce susceptible d’occasionner des dégâts (ESOD) par arrêté ministériel triennal pris en application de l’article R.427-6 du Code de l’environnement. Nonobstant les restrictions sur les périodes de chasse, les animaux classés ESOD peuvent être éliminés toute l’année. En 2019 et pour trois ans, suite à des consultations départementales et un arbitrage ministériel, le renard a été classé ESOD dans 90 départements français. La décision de classement doit être motivée. Plusieurs arguments sont avancés pour ce classement : pertes dans les élevages avicoles ou de gibier, raisons sanitaires (par ex. : échinococcose alvéolaire, gale sarcoptique). Inversement, des bénéfices liés à la présence des renards sont également avancés, tels que la prédation de rongeurs (campagnols notamment), porteurs d’agents zoonotiques, la réduction d’utilisation de raticides, etc. ... Dans un rapport et avis sur le rôle épidémiologique du renard dans le système multihôtes de la tuberculose bovine (Anses 2021)1, l’Anses notait que l’importance des nuisances attribuées aux renards faisait l’objet de controverses et de polémiques en France. La présente saisine s’inscrit ainsi dans un contexte sociétal sensible impliquant notamment les associations de protection de la nature et les chasseurs ou les éleveurs. Les réponses à cette saisine visent à clarifier le rôle du renard dans l’épidémiologie de certaines zoonoses pour lesquelles il est présenté comme premier responsable de la transmission à l’humain, ce qui motive certains acteurs à proposer son classement en tant qu’ESOD. Dans une approche « une seule santé » (One Health), il est demandé d’identifier les risques pour la santé publique associés à des évolutions significatives, à la hausse et à la baisse, de populations de renards, i.e. : 1) « lister des zoonoses présentes en France pour lesquelles les renards ont un rôle épidémiologique, direct ou indirect (par les populations de proies qu’il élimine) et décrire ce rôle épidémiologique ; 2) identifier, le cas échéant, d’autres familles d’impacts en santé publique (par exemple l’effet indirect sur l’emploi des pesticides tels que les raticides) associés à l’évolution des populations de renards ; 3) expliciter, en fonction des connaissances disponibles (publications, données disponibles ou mécanismes de collecte mobilisables), l’importance relative des effets identifiés aux points 1 et 2, pour l’humain et/ou l’environnement, de l’évolution des populations de renards ; 4) analyser la faisabilité d’une évaluation socio-économique de type coût/bénéfice de la prévention et des impacts associés à ces zoonoses dans lesquels les renards ont des rôles différents, pour l’être humain et/ou l’environnement ». La saisine concerne exclusivement la France métropolitaine. En outre, n’entrent pas dans le champ de la saisine (i) les renards en tant que proies des loups, lynx et grands ducs principalement, ce qui ne constitue pas un enjeu de santé publique, (ii) l’impact des renards prédateurs sur les populations de volailles (basse-cours, élevages aviaires), d’oiseaux sauvages (notamment le gibier), sujet très large qui rejoint un critère de classement ESOD, et (iii) l’impact des renards prédateurs de micromammifères (souris, campagnols, mulots, etc.) à l’origine de dégâts aux cultures, l’expertise se limitant aux populations de proies susceptibles de transmettre des agents de zoonoses.
ano.nymous@ccsd.cnrs.fr.invalid (Emmanuelle Gilot-Fromont) 18 Jul 2025
https://hal.science/hal-05124696v1
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[hal-05151340] « Un système de valeurs perdure »
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Benoît Coquard) 08 Jul 2025
https://hal.science/hal-05151340v1
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[hal-05027515] Potential of peatlands restoration for GHG emissions mitigation in France: Investigation of acquisition costs
Public demand for the restoration of degraded French peatlands is strong, as they contribute to climate change. A French carbon offset accreditation is being developed to facilitate private investment in peatland restoration. Assessing the costs of restoration programs and projects is vital to target cost-efficiency. Studies on acquisition costs are non-existent in the peatland scientific literature, while the sale price of peatlands could increase restoration costs, hampering the feasibility of operation works. Given the need for spatially explicit information for restoration planning, we use the first stage of the hedonic prices method to provide a model that measures the price of French peatlands and its determinants, at a national scale. Real peatland sales from the DVF+ database (Cerema) are exploited. The parcels selected in the model are distributed along a gradient of elevation, state of degradation and intensity of land use. Predictions of peatland prices are then made in the Cotentin-Bessin and jurassian massif regions to check the validity of the model. The average peatland price is 3014 €/ha but it varies greatly between regions. The main results indicate that intensive land use (crops) and increasing slope raise the selling price, while elevation, increasing distance to settlement and moor land use lower it. The prediction results are encouraging for a nationwide use of peatland prices in restoration planning programs. This study will also help get a better understanding of implications of peatland acquisition in restoration and total costs. This study provides ex-ante information before the price of land may rise due to soaring carbon prices and the attractiveness of peatland purchase for private sector following the implementation of the French carbon offset accreditation for peatlands. Afterwards, the focus should be put onto complementary land indicators such as fragmentation. The methods developed in the article can be applied to other contexts where there are overlapping land uses.
ano.nymous@ccsd.cnrs.fr.invalid (Lise Pinault) 09 Apr 2025
https://hal.science/hal-05027515v1
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[hal-05109984] Des campagnes reconfigurées
Tandis que le nombre d’agriculteurs et d’agricultrices ne cesse de diminuer, l’espace rural se réinvente sous l’impulsion de nouveaux actifs non issus de cette profession, longtemps emblématique de la ruralité.
ano.nymous@ccsd.cnrs.fr.invalid (Yannick Sencébé) 12 Jun 2025
https://institut-agro-dijon.hal.science/hal-05109984v1
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[hal-05107904] Identification of Spatial Spillovers: Do's and Don'ts
The notion of spatial spillovers has been widely used in applied spatial econometrics. In this paper, we consider how they can be identified in both structural and causal reduced‐form models. First, discussing the various threats to identification in structural models, we point out that the typical estimation framework proposed in the applied spatial econometric literature boils down to considering spatial spillovers as a side‐effect of a data‐driven chosen specification. We also discuss the limits of blindly relying on interaction matrices purely based on geography to identify the source and content of spillovers. Then, we present reduced forms impact evaluation models for spatial data and show that the current spatial versions of usual impact evaluation models are not fully satisfactory when considering the identification issue. Finally, we propose a set of recommendations for applied articles aimed at identifying spatial spillovers.
ano.nymous@ccsd.cnrs.fr.invalid (Nicolas Debarsy) 11 Jun 2025
https://hal.science/hal-05107904v1
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[hal-05003526] Méthode d'analyse de la transition agroécologique à l'échelle des filières
Cet article propose un cadre analytique du processus de transition agroécologique à l'échelle des filières agrialimentaires, en mobilisant des approches issues des transition studies et de l'économie de l'innovation. Ce cadre vise à questionner la manière dont les différents maillons des filières peuvent se coordonner pour construire un processus d'apprentissage collectif de conception et valorisation sur le marché de systèmes agrialimentaires durables. Un ensemble de fonctions clés telles que la coconstruction des connaissances, la mise en place de cahiers de charges en lien avec des mentions valorisantes, la sécurisation de l'approvisionnement au travers de contrats, sont considérées. La pertinence d'utilisation de ce cadre d'analyse pour comprendre ces dynamiques de filière, s'est renforcée au fil de sa construction pour l'étude de 28 cas de démarches de filières déclarant se différencier par des pratiques reliées à des principes de l'agroécologie.
ano.nymous@ccsd.cnrs.fr.invalid (Marie-Benoît Magrini) 24 Mar 2025
https://hal.inrae.fr/hal-05003526v1
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[hal-05003464] Le chantier « Agroécologie & Marché » conduit par les groupes filières INRAE
Innovations agronomiques 100 (2025), 1-12 <div>Résumé<p>Le secteur agroalimentaire fait l'objet d'une segmentation croissante du marché avec la multiplication de démarches dites de qualité, publique ou privée, qui engagent les filières dans la construction de pratiques de production, de transformation ou de distribution différenciées. Nous connaissons peu de choses sur la manière dont ces démarches inscrivent leurs pratiques dans l'agroécologie, et en particulier pour les filières ayant une mention valorisante autre que l'agriculture biologique. De 2022 à 2023, la Direction Scientifique Agriculture INRAE a engagé un chantier exploratoire, avec 11 groupes filières INRAE, pour analyser comment se construisent des démarches de filières différenciées sur le marché et leur engagement en faveur de l'agroécologie. Ce chantier dénommé « Agroécologie et Marché » s'est appuyé sur une analyse documentaire et une série d'entretiens auprès de plus de 60 acteurs, représentatifs d'interprofessions et de différents maillons de diverses filières. Cet article introductif présente la réflexion initiale de ce chantier, la mission des groupes filières et les 28 cas d'études retenus à titre illustratif, pour conduire cette analyse exploratoire au regard d'une diversité de contextes de production et de filières.</p></div>
ano.nymous@ccsd.cnrs.fr.invalid (Marie-Benoît Magrini) 24 Mar 2025
https://hal.inrae.fr/hal-05003464v1
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[hal-04766903] Assessing the ex-ante impacts of a low-emission zone on transport poverty and vulnerability with the VulMob indicator
Numerous Low Emission Zones (LEZs) have been implemented across Europe to improve air quality and reduce car use. However, to date, the impact of LEZs has been widely perceived as regressive, since vehicles that meet the low emission requirements are more expensive than others. The literature assessing the impact of LEZs on vulnerable and poor households prior to their implementation is sparse, particularly if we take into account the diversity of households’ capacities to adapt according to their characteristics and mobility habits, beyond the sole solution of purchasing a LEZ-compatible vehicle. However, such assessments would make it possible to define accompanying policies to improve the social justice of the LEZs. In this article, we develop a methodology to evaluate the ex-ante impacts of a LEZ on vulnerable or poor households. First, we identify households affected by the LEZ. Second, the VulMob multidimensional indicator is used to identify, among affected households, households with low transport-affordability and highly vulnerable households according to their vulnerability profiles. Third, we assess the adaptive capacity in terms of modal shift options and considering the possibility to modify the destination. We apply this methodology to the Grenoble area (France), using the Local Household Travel Survey. The results show that not only are highly vulnerable households more affected by the LEZ than other households, but also that more of them are left with no alternative but to buy a LEZ-compliant car. Nevertheless, modal shift seems an adaptation solution with great potential for all households. This could improve the environmental and health performance of LEZs. This work can guide decision-makers in the definition of preventive and compensatory policies, considering the profiles of transport vulnerability and the specificities of the territory.
ano.nymous@ccsd.cnrs.fr.invalid (Lola Blandin) 05 Nov 2024
https://hal.science/hal-04766903v1
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[hal-05165058] An individual evolutionary learning model meets Cournot
We extend the individual evolutionary learning model by incorporating other-regarding considerations and apply the model to some Cournot games. Using a model fitted to the experimental data of a repeated three-player Cournot game (with non-linear cost and demand functions), we provide out-of-sample predictions regarding the "feedback effects" and "number effects" and test them using the data gathered via newly conducted experiments. The prediction regarding the feedback effect is partially confirmed. Namely, it is observed for the three- and four-player games, but not the two-player game. The prediction regarding the number effect is also partially confirmed in that while the model predicts the number effect to be observed with detailed feedback, and not under aggregate feedback, the effect is observed with both types of feedback.
ano.nymous@ccsd.cnrs.fr.invalid (Jasmina Arifovic) 16 Jul 2025
https://hal.inrae.fr/hal-05165058v1
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[hal-04971903] Acceptability and effect on food choices of incentives promoting more sustainable diets among low-income consumers: A qualitative study
In the context of rising food costs, low-income consumers are likely to lack financial access to a sustainable diet primarily composed of healthy plant-based food. To promote a change towards more sustainable food habits, vouchers for fruit, vegetables and legumes redeemable in supermarkets have been experimented in the urban area of Dijon (France). The objective of the study was to explore the acceptability of the intervention and the effects of the vouchers on food choices through participants' perceptions. Face-to-face semi-structured interviews were conducted with twenty-seven participants, three months after the end of the intervention. The transcripts were analysed through inductive then deductive content analysis, following a process evaluation framework with two themes related to the implementation and the mechanisms of impact of the intervention. Implementation issues and feelings of discrimination were mentioned, but satisfaction was high and vouchers were considered to improve the financial situation, although the restriction on the targeted products was not always understood. Regarding the mechanisms of impact, during the intervention period, two third of the participants, especially families with young children, attached greater importance to taste and curiosity for unfamiliar food and lesser importance to price. Vouchers thus led to food purchases of higher diversity and higher enjoyment. Other participants did not change their habits, mostly because of an improper use of the vouchers or the absence of motivation for a dietary change. These findings suggest that financial incentives not only increase access to sustainable food, but also influence food choice processes and contribute to greater acceptability of plant-based food in low-income families. The results call for financial incentives to be considered as an opportunity to support changes in dietary behaviour in low-income populations.
ano.nymous@ccsd.cnrs.fr.invalid (Basile Verdeau) 28 Feb 2025
https://hal.inrae.fr/hal-04971903v1
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[hal-05164725] 2024 JGS Best Paper Award and the Editors’ Choice Paper Volume 27(1)
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ano.nymous@ccsd.cnrs.fr.invalid (Manfred Fischer) 16 Jul 2025
https://hal.inrae.fr/hal-05164725v1
