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L'estimation des préférences individuelles en vue de la décision publique. Problèmes, paradoxes, enjeux

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  • Antoinette Baujard

Abstract

[eng] Public decision-makers seek to maximize social welfare , hence to satisfy the population’s individual preferences. How do the systems for gathering information on agents’ preferences affect the quality and the interpretation of public decision-making ? The paper applies a decision-making model to the allocation of a subsidy for public or private transportation. Individual preferences are revealed, at the aggregate level, by individual behaviors in different choice contexts. Using Saari’s techniques of probability calculus for voting paradoxes, the loss of information due to these particular conditions of data collection is assessed and analyzed in detail. The author draws conclusions in three areas : information reliability and decision quality ; model formulation ; and the implementation of welfarism. [fre] L’objectif des décideurs publics est de maximiser le bien-être social, donc de satisfaire au mieux les préférences individuelles de la population. Dans quelle mesure les dispositifs de collecte d’informations sur ces préférences affectent-t-ils la qualité et l’interprétation de la décision publique ? L’article présente un modèle d’allocation d’une subvention au transport public ou privé. Les préférences individuelles sont inférées, de façon agrégée, des comportements des agents qui choisissent l’un ou l’autre dans différents contextes de choix. L’adaptation des techniques de calcul de probabilité des paradoxes de vote élaborées par Saari permet d’évaluer et d’analyser la perte d’information due à ces conditions particulières de collecte. Trois conclusions sont alors établies : sur la fiabilité de l'information et la qualité de la décision, sur la formulation des modèles et sur la mise en oeuvre du welfarisme.

Suggested Citation

  • Antoinette Baujard, 2006. "L'estimation des préférences individuelles en vue de la décision publique. Problèmes, paradoxes, enjeux," Économie et Prévision, Programme National Persée, vol. 175(4), pages 51-63.
  • Handle: RePEc:prs:ecoprv:ecop_0249-4744_2006_num_175_4_7562
    DOI: 10.3406/ecop.2006.7562
    Note: DOI:10.3406/ecop.2006.7562
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