This paper aims to clarify the status of capability in Sen’s idea of justice. Sen’s name is so widely associated with the concept of capability that commentators often assume that his contribution to the study of justice amounts to a capability theory, albeit underdeveloped. We argue that such a reading is misleading. Taking Sen’s reticence about operationalization seriously, we show that his contribution is inconsistent with a capability theory. Instead, we defend the idea that the capability approach plays a heuristic (...) role: capability is a step in his argument against alternative materials, but is not meant as a definitive end. Sen defends a critical perspective primarily to encourage public reasoning and respect for agency as regards the definition of what should count in the evaluation of social states. (shrink)

Abstract : This introduction to a special issue on "Normes and normativity" emphasizes the difficulties and challenges of distinguishing between a positive approach and a normative approach to norms in economics. Collective life is organized by norms, however the mere fact that they regularly influence behaviours does not imply their desirability. A strict description of norms may require consideration of ethical issues, which may be reported by different methods; choosing among norms however is an activity of a fundamentally normative nature, (...) which questions the legitimacy of decisions and evaluations. The very possibility of a demarcation between is and ought is not straightforward. In welfare economics in particular, the standard approaches that aim to avoid value judgements (welfarism) or to isolate them (axiomatics) can be problematic. To conclude, we present the four articles in the special issue meant to illustrate these issues regarding the nature, knowledge, value of norms and the positive-normative distinction. -/- Résumé : Cette introduction à un dossier thématique sur le thème "Normes et normativité" insiste sur les difficultés et les enjeux de la distinction entre les approches positives et normatives des normes en économie. La vie collective est organisée par des normes, mais qu’elles ordonnent les comportements dans les faits n’impliquent pas qu’elles soient désirables. Une stricte description des normes peut nécessiter de prendre en compte les questions éthiques, lesquelles peuvent être traduites par différentes méthodes ; choisir les normes en revanche est une activité de nature fondamentalement normative, qui interroge la légitimité des décisions et des évaluations. La possibilité même de démarcation entre positif et normatif ne va pas de soi : en particulier en économie du bien-être, les approches standards qui visent à éviter les jugements de valeur (le welfarisme) ou à les isoler (l’axiomatique) peuvent s’avérer problématiques. Pour conclure, nous présentons les quatre articles du numéro qui illustrent ces questionnements relatifs à la nature, la connaissance, la valeur des normes et la distinction entre normatif et positif. (shrink)