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Cole Wittbrodt

Publications and source records attributed to Cole Wittbrodt.

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Bargaining with Absentmindedness

Delay is the norm in bargaining. I propose a novel source of bargaining delay: absentmindedness. Instead of interpreting absentmindedness as a literal memory friction, I use absentmindedness to represent a broader form of bounded rationality in dynamic games where players cannot perfectly track a game's progression. I show that equilibrium behavior is equivalent to that of a bargainer who commits ex-ante to a stationary behavioral strategy. Bargainers unable to finely condition play on the stage of dynamic interaction can credibly refuse last-minute ultimatums. Other parties that anticipate this behavior are driven to offer preemptive concessions to avoid a breakdown in negotiations. Absentmindedness is thus a source of bargaining power, even for players who never make offers. This bargaining power comes at the cost of efficiency; I show that there can be equilibria where offers are rejected on the path of play.

econ.TH

Optimal Platforms for Search and Matching

Search and matching increasingly take place on online platforms with elements of centralized and decentralized matching. Platforms can alter the search process for users, but cannot eliminate search frictions entirely. I study a model where users pay to change the distribution of potential partners they search over and characterize the revenue-maximizing platform when match characteristics are private information. With complementary match characteristics, I show that the only possible source of inefficiency on the optimal platform is exclusion, unlike standard screening problems. Matching on the optimal platform is perfectly assortative --- there is no equilibrium mismatch. This conclusion is robust to various manners in which fees are collected (e.g. subscription fees or match fees), and to environments where the platform designer can also change search speeds.

econ.TH