China's fast economic growth over the past 40 years has been accompanied by an increasingly rapid rate of urbanization, from about 20% in the early 1980s to 60% in 2018. In addition to natural population growth, rural-urban migration is generally believed to be a dominant driving force....

In this paper, we propose a matching model to study the efficiency of thin and thick markets. Our model shows that the probabilities of matches in a thin market are significantly lower than those in a thick market. When applying our results to a job search model, it implies that, if the ratio of...

This paper investigates whether subjective expectations about future mortality affect consumption and bequests motives. We estimate a dynamic life-cycle model based on subjective survival rates and wealth from the panel dataset Asset and Health Dynamics among Oldest Old. We find that bequest...

Testing life-cycle models and other economic models of saving and consumption at micro level requires knowledge of individuals' subjective believes of their mortality risk. Previous studies have shown that individual responses on subjective survival probabilities are generally consistent with...

This paper investigates to what extent the differences in education between black and white men can be explained by the differences in their mortality risks. A dynamic optimal stopping-point life cycle model is examined, in which group-level mortality risk plays an important role in determining...

This paper studies how the thick market effect influences local unemployment rate fluctuations. The paper presents a model to demonstrate that the average matching quality improves as the number of workers and firms increases. Unemployed workers accumulate in a city until the local labor market...

Graduated income tax rates and transfer programs create piecewise-linear budget constraints that consist of budget segments and kink points. With any change in these tax rules, each individual may switch between a kink point and a budget segment, between two budget segments, or between two kink...

This paper examines schools' decisions to sort students into different classes and how those sorting processes impact student achievement. There are two potential effects that result from schools creating homogeneous classes--a "tracking effect," which allows teachers to direct their focus to a...

Group lending has been widely adopted in the past thirty years by many microfinance institutions as a means to mitigate information asymmetries when delivering credit to the poor. This paper proposes an empirical method to address the potential omitted variable problem resulting from unobserved...

This paper develops a search-matching model to study the impact of the unemployment rate on the housing market in the presence of the thick market effect. We estimate the structural model using Texas city-level data that covers three years, 1990, 2000 and 2010. Our structural estimation helps...