2017-07-012024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/656401摘要：過去數十年來，收入與財富的不均度在許多國家中快速增長。理論指出，不完全市場中的財富報酬不確定性是產生上述不均的重要機制。如果我們想要了解不均度產生的機制，甚至更進一步作出相對應的政策去減緩不均的增長，則了解財富報酬的異質性是相當重要的第一步。然而，財富不均的研究有兩個問題。首先，因為缺乏個人的資產資料，理論模型無法直接藉由資料去驗證。第二，理論模型雖然可以解釋不均的分布，但是無法解釋不均快速增長的動態現象。在這份計劃中，我建議使用台灣的個人及家戶資產與稅務資料去解決上述問題。這些資料在全世界中是獨一無二的。本計畫首先藉由稅務資料分析個人及家戶的收入以及資產報酬的異質性，再進一步去驗證理論模型是否符合實證上的資料，以檢驗出相對重要的機制。<br> Abstract: There have been rapid rises in income and wealth inequality in past decades for many countries. From the theoretical perspective, heterogeneity in uninsurable idiosyncratic capital income risk has been recognized as a key mechanism in generating top income and wealth inequality. This wealth return heterogeneity is significant if we want to understand the mechanisms generating inequality, and therefore policies to alleviate the undesired consequences. However, these theories are subject to two challenges. First, due to the lack of individual wealth data in most countries, they have not been fully examined empirically. Second, though successful in explaining stationary distributions, they cannot explain the observed transitional inequality dynamics. To deal with these challenges, I propose to use Taiwan`s unique credential administrative data of households` asset records to examine existing theories. This project focuses on the heterogeneity in labor earning and capital income risks and the corresponding endogenous wealth distribution. By using the unique dataset, this project can have two potential contributions: (1) to examine if this mechanism is empirically significant; (2) to help discover whether there are other forces contributing to wealth inequality, heterogeneity, and dynamics.財富報酬不均異質性Wealth returnsinequalityheterogeneity