Wealth Dynamics in Communities
建立模型研究人情交换如何影响财富动态，发现财富会排挤人情交换，导致低收入家庭长期财富受限，并探讨社区福利和地区政策如何同时促进储蓄和人情交换。
Abstract This article develops a model to explore how favour exchange influences wealth dynamics. We identify a key obstacle to wealth accumulation: wealth crowds out favour exchange. Therefore, households must choose between growing their wealth and accessing favour exchange. We show that low-wealth households rely on favour exchange at the cost of having tightly limited long-term wealth. As a result, initial wealth disparities persist and can even grow worse. We then explore how communities and policymakers can overcome this obstacle. Using simulations, we show that community benefits and place-based policies can stimulate both saving and favour exchange, and in some cases, can even transform favour exchange into a force that accelerates wealth accumulation.