Yao Amber Li

Yao Amber Li
The Hong Kong University of Science and Technology | UST · Department of Economics

Ph.D.

About

49
Publications
7,443
Reads
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742
Citations
Introduction
I am an associate professor of Economics and Faculty Associate of IEMS (Institute for Emerging Market Studies) at HKUST. My research fields include international trade, international macroeconomics, and Chinese economy, especially empirical trade and empirical international macroeconomics with the special focus on emerging markets such as China. My research interests include quality upgrading, knowledge diffusion, technology transfer/upgrading, MNEs, and economic geography. My recent work has focused on understanding the frictions in knowledge diffusion and the strategic responses of firms to external shocks (e.g., trade liberalization and exchange rate shocks). If you are interested in my research, please go to my website http://yaoli.people.ust.hk/
Additional affiliations
July 2010 - present
The Hong Kong University of Science and Technology
Position
  • Professor (Assistant)
July 2010 - present
The Hong Kong University of Science and Technology
Position
  • Professor

Publications

Publications (49)
Article
Industrial agglomeration policies may limit competition. We develop, validate, and apply a novel approach for measuring competition based on the comovement of markups and market shares among firms in the same location and industry. Then we develop a model of how this reduction in competition affects aggregate income. We apply our approach to the we...
Article
In this paper, we study whether or not transportation infrastructure disrupts local monopsony power in labor markets using an expansion of the national highway system in India. Using panel data on manufacturing firms, we find that monopsony power in labor markets is reduced among firms near newly constructed highways relative to firms that remain f...
Article
Full-text available
How important is the exercise of classical monopsony power against labor for the level of wages and labor's share? We examine this in the context of China and India – two large, rapidly-growing developing economies. Using theory, we develop a novel method to quantify how wages are affected by the exertion of market power in labor markets. The theor...
Article
Modern trade models attribute the dispersion of international prices to physical and man-made barriers to trade, to the pricing-to-market by heterogeneous producers and to differences in the quality of output offered by firms. This paper presents a tractable general equilibrium model that incorporates all three of these mechanisms. Our model allows...
Article
Combining data on locations with career and educational histories of mathematicians, we study how distance and ties affect citation patterns. The ties considered include coauthorship, past colocation, and relationships mediated by advisers and the alma mater. With fixed effects capturing subject similarity and article quality, we find linkages are...
Preprint
Full-text available
Combining data on locations with career and educational histories of mathematicians, we study how distance and ties affect citation patterns. The ties considered include coauthorship, past colocation, and relationships mediated by advisors and the \emph{alma mater}. With fixed effects capturing subject similarity and article quality, we find linka...
Article
Full-text available
This paper presents evidence from highly disaggregated Chinese firm-product data that, given productivity, input tariff reductions induce an incumbent importer/exporter to increase product markups. We further investigate empirically the mechanisms underlying this trade liberalization effect, and find that input tariff reductions decrease marginal c...
Article
This paper presents theory and evidence on firms’ import responses to current and future exchange rates along both intensive and extensive margins. The paper first builds a dynamic heterogeneous-firm model to study how firms adjust their import decision by taking into account both current and future exchange rates. In the model, individual firms pa...
Article
Full-text available
This paper presents an analysis of the effect of China's entry into the WTO on the quality choices of Chinese exporters in terms of their outputs and their inputs. Using highly disaggregated firm-level data, we show that the quality upgrading made possible by China's tariff reductions was concentrated in the least productive Chinese exporters. Thes...
Article
Full-text available
We use a panel of over 600,000 Chinese firms (1998–2009) to investigate the effects of credit constraints on firm productivity. We find that both internal finance through a firms own cash flow and external credit supply significantly promote firm productivity and productivity growth rates. Specially, there is a substitution effect between internal...
Article
Full-text available
This paper shows that the pricing behavior of exporting firms exhibits a "forward-looking" nature with sticky prices. As a result, the expectations of future exchange rates affect current prices at both the product level and firm level. We find evidence by employing both highly disaggregated Harmonized System (HS) 10-digit product-level import data...
Article
Full-text available
This paper presents theory and evidence from disaggregated Chinese data that tariff reductions induce a country's producers to upgrade the quality of their exports. The paper first documents stylized facts regarding the effect of trade liberalization on export prices. Next, an analytic framework is developed that relates a firm's choice of quality...
Article
Full-text available
This paper presents theory and evidence from highly disaggregated Chinese data that tighter credit constrains force firms to produce lower quality. The paper modifies Melitz's (2003) model of trade with heterogeneous firms by introducing quality choice and credit constraints. The quality sorting model predicts that tighter credit constraints faced...
Chapter
Productivity growth is a significant contributor to GDP growth, particularly to increases in per capita income. However, there is considerable ambiguity regarding how to measure the concept of technical progress, and consequently on policies that would foster productivity growth. Brazil, China, and India, three important emerging economies, are see...
Article
Full-text available
This paper presents theory and evidence from disaggregated Chinese data that tariff reductions induce a country's producers to upgrade the quality of their exports. The paper first documents stylized facts regarding the effect of trade liberalization on export prices. Next, an analytic framework is developed that relates a firm's choice of quality...
Article
Full-text available
This paper presents theory and evidence from disaggregated Chinese data that tariff reductions induce a country's producers to upgrade the quality of their exports. The paper first documents stylized facts regarding the effect of trade liberalization on export prices. Next, an analytic framework is developed that relates a firm's choice of quality...
Article
Full-text available
This paper presents theory and evidence from disaggregated Chinese data that tariff reductions induce a country's producers to upgrade the quality of their exports. The paper first documents stylized facts regarding the effect of trade liberalization on export prices. Next, an analytic framework is developed that relates a firm's choice of quality...
Article
This paper explores how the distribution of credit supply within an industry affects that industry's export intensity (the export-to-sales ratio) and export propensity (the ratio of the number of exporters to the total number of firms). Using a heterogeneous firm trade model, we derive two opposing hypotheses: for industries with relatively low (hi...
Article
This paper presents theory and evidence on firms' import responses to exchange rate fluctuations using disaggregated Chinese imports data. The paper develops a heterogeneous-firm trade model that predicts import responses at both extensive and intensive margins as well as the more profound adjustment under ordinary trade than processing trade. Next...
Article
Using data on academic citations, career and educational histories of mathematicians, and disaggregated distance data for the world's top 1000 math departments, we study how geography and ties affect knowledge flows among scholars. The ties we consider are coauthorship, past colocation, advisor-mediated relationships, and alma mater relationships (...
Article
Full-text available
This paper presents theory and evidence from Chinese firm-product data that, given firm productivity, trade liberalization increases product markups. This finding calls for a reconsideration of the well-established imports-as-market-discipline hypothesis. This paper further verifies underlying mechanisms behind this finding: input tariff reductions...
Technical Report
Full-text available
Using data on academic citations, career and educational histories of mathematicians, and disaggregated distance data for the world's top 1000 math departments, we study how geography and ties affect knowledge flows among scholars. The ties we consider are coauthorship, past colocation, advisor-mediated relationships, and alma mater relationships (...
Article
Full-text available
This paper explores the effects of distance as well as subnational and national borders on international and intranational knowledge spillovers through patent citations across the 39 most patent-cited countries and 319 metropolitan statistical areas (MSAs) within the U.S. In contrast to previous findings that knowledge localization fades over time,...
Article
Full-text available
This paper examines the relationship between the credit constraints faced by a firm and the unit value prices of its exports. The paper modifies Melitz's (2003) model of trade with heterogeneous firms by introducing endogenous quality and credit constraints. The model predicts that tighter credit constraints faced by a firm reduce its optimal price...
Article
Full-text available
This paper presents theory and evidence from highly disaggregated Chinese data that tariff reductions induce a country's producers to upgrade the quality of the goods that they export. The paper first documents two stylized facts regarding the effect of trade liberalization on export prices and its relation with product differentiation. Next, the p...
Article
Full-text available
This paper assesses the welfare impact of trade and technology diffusion as well as the change in the cross-country distribution of GDP due to removal of trade costs and diffusion barriers. The model extends the multi-country Ricardian trade model of Alvarez and Lucas (2007) to include technology diffusion with diffusion barriers. A key feature of...
Article
Full-text available
This paper documents the major transformation of higher education that has been underway in China since 1999 and evaluates its potential global impacts. Reflecting China's commitment to continued high growth through quality upgrading and the production of ideas and intellectual property as set out in both the 10th (2001-2005) and 11th (2006-2010) f...
Article
Full-text available
This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan level within the U.S. and the 38 largest patent-cited countries outside the U.S. We present 3 key findings: Fi...

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