The literature has shown that complementarity places significant structure on outcomes in matching environments, games, and exchange economies. We examine the extent to which this structure, and the economic intuition underlying it, is common across these classes of environments. We show that...

I study a two-sided marriage market in which agents have incomplete preferences—i.e., they find some alternatives incomparable. The strong (weak) core consists of matchings wherein no coalition wants to form a new match between themselves, leaving some (all) agents better off without harming...

Interference across competing firms in RCTs can be informative about market structure. An experiment that subsidizes a random subset of traders who buy cocoa from farmers in Sierra Leone illustrates this idea. Interpreting treatment-control differences in prices and quantities purchased from...

We analyze marital matching on income using an extremely rich Dutch data set containing all income tax files over four years. We develop a novel methodology that directly extends previous contributions to allow for highly flexible matching patterns. Investigating all marriages that took place...

Can digital labour market platforms reduce search frictions in either formal or informal labour markets? We study this question using a randomized experiment embedded in a tracer study of the work transitions of graduates from technical and vocational colleges in Mozambique. We implement an...