The battle of the Nudge

I was invited to present a paper in Stirling, the European Capital of Nudge, last week. ( Here are pictures of me resisting the nudge to put my trash in the bin (pics taken by Leonhard Lades, my very nice host there). This is actually a nice illustration of an issue with nudges, how they […]

A Chrome market

Price and format competition with consumer confusion

Paolo Crosetto writes about our new paper about price and format competition with consumer confusion. Nice graphs depict our “Chrome market model”: Our conclusion is as follows: In a nutshell, clever consumers are not enough to avoid collusion and high prices. Consumer protection may therefore require some encouragement for firms to present prices and […]


Busy like a bee and still buzzing not so weakly

A very busy summer for me this year, after last year’s ban on conferences to focus on doing experiments. For me the summer started at the end of May with a research stay in Rennes, where I was invited by Eric Darmon and gave a talk about my research with Paolo Crosetto on how firms […]

Science Slam picture and video

A really good picture of the Science Slam victory celebration with GSBC and MPI colleagues. The photographer managed to do a really good group picture. I will remember his technique to encourage people to do a wide smile: not the usual “Cheese!”, but stretching his own mouth wide with his fingers. It seems to have […]

Jena Science Slam Winner!

My (winning!) Jena Science Slam presentation, with notes in small character added. The title of my slam was “Why is shopping such a baffling ordeal, and what can you do about it?”. I am very thankful to the audience, they had amazing energy in their cheering and applause! There should soon be videos of this […]

Competition when firms can confuse consumers: A primer on some ongoing research

I felt like giving a little primer on the results of an experiment that Paolo and I did in December, about the incentives for firms to confuse consumers. I was motivated by seeing the following recent article in JEBO: “Consumer Myopia, Competition and the Incentives to Unshroud Add-on Information” by Tobias Wenzel As in most […]

Social preferences under uncertainty. An experiment

In his short story “The Lottery in Babylon”, Borges imagines a city where a lottery, managed by a secret society, mandates the fate of its citizens. Every sixty nights, drawings are made and determine each citizen’s fate until the next drawing, and this with “incalculable consequences”. Like the narrator, one might end up a proconsul, or […]