序贯信息获取下的协调

Coordination with sequential information acquisition

Theoretical Economics · 2026
被引 0
人大 AABS 4

中文导读

研究了初始信念差异和序贯信息选择如何影响协调失败的可能性,发现信息选择存在双向无效率,且协调失败概率不随信息精度、成本或可得性变化。

Abstract

We investigate how differences in initial beliefs and sequential information choices affect the likelihood of coordination failure. To do so, we embed interim information acquisition (i.e., information acquisition after observing initial private information) into a standard global game mode with a normal information structure and improper prior. We find that the likelihood of coordination on welfare‐inferior equilibrium is invariant to precision, cost, and availability of information. We show that agents' information choices feature two‐sided inefficiency where too many agents with high posteriors and too few agents with low posteriors acquire information. Instead, under efficient information choices, the likelihood of coordination failure vanishes as the number of signals that agents can acquire tends to infinity. Unfortunately, efficient information choices are not implementable unless policymakers can observe agents' private information.

协调失败序贯信息获取全局博弈信息效率