ABSTRACT The status and role of Popper’s ‘Rationality Principle’ (RP) is still the subject of disputes. The ‘prevailing view’ among Popper’s commentators seems to be that RP is better interpreted as a methodological principle. Yet, this view is challenged in a recent study where RP is interpreted as an‘idealization’. We critically review these two accounts of RP and propose a novel one according to which RP is, first and foremost, the scientific version of a heuristic that ordinary people unconsciously use (...) when they seek to explain and predict other people’s behavior. However, we recognize that, to the extent RP is part of a methodological strategy whereby, in the wake of adverse empirical results, social scientists place the ‘onus of proof’ on their situational model it is legitimate to claim that RP is adopted, at least partly, for methodological reasons. Further, to the extent that the adoption of RP implies suppressing those mental processes that may affect actors’ reasoning and willpower it is also legitimate to claim that RP is, at least partly, an ‘idealization’. We conclude that the status and role of RP is multi-faceted and that the three accounts of RP complement each other. (shrink)

Popper's version of situational analysis, with its focus on the logic of situations and the rationality principle, fails to provide cogent explanations of the human decisions and actions underpinning social phenomena. It so fails because where he demanded objectivism and formalism in the social sciences, his substantive arguments lost contact with the psychological and subjectivist realities of the human realm. But Popper also devised some key elements of a social ontology. It is argued that although there are crucial gaps in (...) his ontology, it can be augmented to give situational analysis the potential to reach beyond pure logic and rationality and to bring social theory closer to grasping the real world of human action. (shrink)

This article discusses the rationality principle, especially in Popper's version, on the occasion of a commentary of Maurice Lagueux's book, Rationality and Explanation in Economics (2010).

Popper's short essay about the rationality principle has been the target of many criticisms which have raised serious doubts about its consistency. How could the well-known promoter of falsificationism suggest that we not reject a principle that he himself describes as false? Nonetheless, the essay can be read in a way that makes it appear much more consistent. Better sense can be made of Popper's own examples (the flustered driver, the pedestrian, etc.), by taking seriously his view that the rationality (...) principle might be "approximately true" and falsified only in very rare cases, while also giving proper attention to his four rather elliptical arguments. (shrink)

In recent years, several authors have reconstructed the relationship between 20th-century economic theory and neuro-psychological research in terms of a three-stage narrative of initial unity, increasing separation, and ongoing reunification. In this article, I draw on major developments in economic theory and neuro-psychological research to provide a descriptive and normative critique of this reconstruction. Moreover, I put forward a reconstruction of the relationship between economics and neuro-psychology that, I claim, better fits both the available empirical evidence and the methodological foundations (...) of these disciplines. In doing so, I argue that recent calls to develop a unified interdisciplinary framework for modeling choice are premised on disputable presuppositions concerning both the domain of economic theory and the relationship between this theory’s axiomatic foundations and empirical findings about the neuro-psychological substrates of choice. (shrink)

This thesis attempts to justify a normative role for methodology by sketching a pragmatic way out of the dichotomy between two major strands in economic methodology: empiricism and postmodernism. I discuss several methodological approaches and assess their aptness for theory appraisal in economics. I begin with the most common views on methodology and argue why they are each ill-suited for giving methodological prescriptions to economics. Then, I consider positions that avoid the errors of empiricism and postmodernism. I specifically examine why (...) the two major strands of methodological criticism fail to give helpful methodological advice to economists and sketch out a pragmatic approach that can do this. (shrink)

The author submits that Popper's social philosophy rests on seven pillars: rationality (both conceptual and practical), individualism (ontological and methodological), libertarianism, the nonexistence of historical laws, negative utilitarianism ("Do no harm"), piecemeal social engineering, and a view on social order. The first six pillars are judged to be weak, and the seventh broken. In short, it is argued that Popper did not build a comprehensive, profound, or even consistent system of social philosophy on a par with his work in epistemology. (...) Still, he did make some important contributions to the field, such as unveiling the philosophical roots of totalitarianism and defending social engineering against both revolutionists and conservatives. (shrink)

Cet article utilise la notion de convention afin de préciser une condition nécessaire à la performation du monde social. On considère ici que l’influence des théories économiques sur le monde social peut être analysée en termes de traduction de conventions scientifiques en conventions sociales. Une telle perspective nous amène à souligner un élément essentiel d’une telle traduction : pour performer le monde social, une notion théorique doit dans un premier temps prendre une posture empirique. On étudie plus particulièrement l’exemple emblématique (...) de la rationalité économique comme concept central d’un nouveau type de politique publique : l’économie des nudges. Classification J.E.L. : B41, C91, Z1. (shrink)