Echo Chambers and Their Effects on Economic and Political Outcomes
综述经济学文献，将回音室分解为个体选择与志同道合者隔离（形成室）和行为偏差导致极化（回声）两个现象，探讨其对经济和政治结果的影响，并提出未来研究方向和政策干预。
In this review, we survey the economics literature on echo chambers. We identify echo chambers as arising from a combination of two phenomena: ( a) the choice of individuals to segregate with like-minded ones, i.e., the creation of chambers, and ( b) behavioral biases that induce polarization when individuals exchange beliefs in these chambers, i.e., the echo. We summarize the literatures on these two phenomena and suggest how to combine the two literatures to gain insights about the effects of echo chambers on economic and political outcomes. We end by suggesting pathways for future research and discussing policy interventions to alleviate echo chambers.