This essay discusses some things we have learned about markets, in the process of designing marketplaces to fix market failures. To work well, marketplaces have to provide thickness, i.e. they need to attract a large enough proportion of the potential participants in the market; they have to...

Because no marketplace operates in isolation from the larger world, marketplace designs may need to adapt to changes in the larger environments. I discuss such changes in connection with the labor markets for new doctors, new Ph.D. economists, and for kidney exchange transplants. But while...

Wie finden Eltern die richtige Schule für ihr Kind? Oder Jobsuchende den richtigen Arbeitgeber - und umgekehrt? Wie finden Nierenkranke den richtigen Organspender? Und Singles den richtigen Partner? Nobelpreisträger Alvin Roth, einer der weltweit führenden Wirtschaftswissenschaftler, zeigt,...