The project delivered clear progress beyond the state of the art, both in methodology and in its applications to markets with asymmetric information. Although the work evolved in a different sequence than originally planned, with greater emphasis on tool development, this shift proved highly productive: the stability-based methods developed during the project generated well-received publications and provided a solid foundation for the project’s core questions on pricing and bargaining.
A first major advance was the development of a practical toolkit for strategically stable analysis in extensive-form games. The project introduced new concepts and characterizations that made stability-based equilibrium selection workable in complex dynamic environments, including sequentially stable outcomes, new approaches to consistent assessments, and refinements for signaling and other asymmetric-information settings. In parallel, new mathematical infrastructure, especially lexicographic numbers, linked extensive-form equilibrium analysis to deeper mathematical theory and made the approach more tractable and broadly applicable.
A second major advance was the production of new results on dynamic trade, pricing, and bargaining, which yielded sharper predictions about prices and welfare when information was incomplete and evolved over time, including in dynamic bargaining, repeated trade with imperfect information, environments with binary private information, and settings with random price discounts. These contributions identified mechanisms shaping pricing dynamics that had previously not been well understood.
A third contribution consisted of closely related spin-off work, most notably on robust communication, which showed that stability-based reasoning could have strong selection power even in cheap-talk models, an approach that had long been viewed as infeasible. This strand also included related work on communication and information acquisition, as well as policy-relevant insights on privacy regulation.
The project also established a strong basis for further consolidation of the framework through its broader research pipeline. At the time of completion, this pipeline included two revise-and-resubmit papers and six submitted working papers. Most importantly, the Phase 1 toolkit had become sufficiently developed to be applied to the project’s central target, namely pricing in bargaining with asymmetric and interdependent information, thereby laying the groundwork for sharper and more robust predictions and for policy-relevant implications.
