In this lecture, Konstantinos Katsikopoulos presents the concept of bounded rationality and contrasts two - as he calls it - cultures of research and analysis within Behavioral Economics: an "idealistic" and a "pragmatic" approach. Thereby, Katsikopoulos discusses amongst others their different assumptions on decision making (utility optimization vs. achievement of a satisfactory outcome), the psychological process as well as the epistemic aim and implications on policy recommendations (nudging vs. education).

Antoine Godin gives a bright, illustrated, introduction to agent-based, stock-flow-consistent modeling, with a clear focus on the agent-based aspect.

This lecture is all about the challenge to include heterodox approaches into macroeconomics. After giving an overview of recent approaches to that problem Professor Michael Roos presents the theoretical framework of Complexity Economics as a means to combine behavioral aspects with macroeconomics.

La première partie de cet article retrace la généalogie de l'économie comportementaliste, depuis les premières théories de Simon des années 1950 au "prix Nobel d'économie" 2017 attribué à Richard Thaler. Les auteurs s'intéressent ensuite à la façon dont les théories comportementalistes se traduisent en instruments de politiques publiques et en étudient les conséquences sur la façon de concevoir l'Etat et son action. Enfin, dans une perspective pluridisciplinaire, ils proposent une critique de ces théories en soulignant que l'approche comportementale peut conduire à négliger les déterminants sociaux de l'action.

Thomas Boraud, neurobiologiste, directeur de recherche au CNRS et à l’Institut des maladies neurodégénératives, CNRS-Université de Bordeaux nous expose l'antinomie entre l’Homme comme un animal doué de raisonnement rationnel et sa psychologie au quotidien. Il introduit sa présentation par des arguments provenant de la biologie et de la théorie de l'évolution pour expliquer en quel sens le concept d'homo œconomicus est dépassé et doit être revu au jour d'aujourd'hui. Il expose les fondements du processus de prise de décision (biais cognitif, capacité cognitive limitée...) pour décrire la part d’aléatoire qui est présente dans ces processus. On y apprend que notre appréhension du réel est largement modelée par nos comportements, eux-mêmes contraints par les circonstances de notre environnement.

How do people make decisions? There is a class of models in psychology which seek to answer this question but have received scant attention in economics despite some clear empirical successes. In a previous post I discussed one of these, Decision by Sampling, and this post will look at another: the so-called Fast and Frugal heuristics pioneered by the German psychologist Gerd Gigerenzer. Here the individual seeks out sufficient information to make a reasonable decision. They are ‘fast’ because they do not require massive computational effort to make a decision so can be done in seconds, and they are ‘frugal’ because they use as little information as possible to make the decision effectively.

Jason Collins explains how his evolutionary approach to decision making relates to other approaches of behaviour This piece therefore not only serves as a good introduction to this evolutionary approach but also serves as a great introduction to these other approaches of behaviour namely neoclassical perfect rationality which involves mainly …

When Santa Fe Institute Scientists first started working on economics more than thirty years ago, many of their insights, approaches, and tools were considered beyond heterodox. These once-disparaged approaches included network economics, agents of limited rationality, and institutional evolution—all topics that are now increasingly considered mainstream.

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