We consider the potentially major role of lay economic representations in economic theoretical modelling. Departing both from the rational expectation hypothesis, that supposes a maximal cognitive fit between agents’ representations and the variables in the model, and from an approach in terms of psychological biases that would externally affect agents’representation of their environment, we consider that lay representations have essential features that make them potentially valuable tools for the reconciliation of normative and practical perspectives in macroeconomics. By reviewing a series (...) of studies in the sub-field of the psychology of lay economics, we first emphasize the collective and pragmatically-oriented features of these lay economic representations. We thereby uncover the major role of language and meaning, seemingly non-economic human institutions, in laying down the basis for economic understanding. Secondly, we directly address the question of the internal logic and cognitive features of these representations and uncover/in uncovering typical circular causal reasoning in lay macroeconomics. We finally re-assess the question of the maximal fit between ordinary economic psychology and predictive economic modelling. (shrink)

The phenomenon of performativity has recently sparked debates about the status of the economic discourse. This paper aims to discuss the subjectivist idea that if economics ‘performs’ social reality, rather than merely reflects it, then every theory can be considered ‘true.’ My main goal is to point out three limits of performativity. First, not all theories can be performative since some do not produce empirical landmarks for agents. Second, social institutions restrict performativity. Third, I emphasize the necessity that a theory (...) to be self-fulfilling. This article is a prelude to a new kind of performative studies based on an original definition: a theory performs the world if it implies a behavioral regularity which leads to a general coordination between agents. That is to say, if it becomes a convention à la David Lewis. (shrink)