China wage inequality: the role of trade and technology

This article empirically investigates the impact of international trade and technical change on skill premia for a panel of 28 manufacturing sectors in China over the period 2002–2011. The results find that the effect of changes of the share of SOEs is twofold. First, the contraction of SOEs promoted productivity growth, and the promoting effect was skill-biased, which tended to increase the skill premia in China. Second, the drop of product prices resulting from falling SOEs share was more magnificent in skill-intensive industries, which helped to mitigate wage inequality through product prices. The accounted-for portion of price changes by productivity growth was skill-biased, significantly raising skill premia through product prices. However, the portion of price changes accounted for by foreign price was unskill-biased, and world price competition diminished the growing income disparity in China.     

International trade,technological change and wage inequality in the UK economy

This paper examines the joint impact of international trade and technological change on UK wages across different skill groups. International trade is measured as changes in product prices and technological change as total factor productivity (TFP) growth. We take account of a multi-sector and multi-factor of production economy and use mandated wage methodology in order to create an well-balanced approach in terms of theoretical and empirical cohesion. We use data from the EU KLEMS database and analyse the impact of both product price changes and TFP changes of 11 UK manufacturing sectors on factor rewards of high-, medium- and low-skilled workers. Results show that real wages of skill groups are significantly driven by the sector bias of price change and TFP growth of several sectors of production. Furthermore, we estimate the share of the three different skill groups on added value for each year from 1970 to 2005. The shares indicate structural change in the UK economy. Results show a structural change owing to decreasing shares of low-skilled workers and increasing shares of medium-skilled and high-skilled workers over the years.     

Does the sector bias of skill-biased technical change explain changing skill premia?

This paper shows the sector bias of skill-biased technical change (SBTC) can help explain changing skill premia within countries in recent decades. Our model demonstrates that in many cases it is the sector bias of SBTC that determines SBTC's effect on relative factor prices, not its factor bias. Rising (falling) skill premia are caused by SBTC that is concentrated in skill-intensive (unskill-intensive) sectors. Our empirical findings for ten OECD countries over the 1970s and 1980s are consistent with sector bias being important. In countries when skill premia were rising (falling), SBTC was generally concentrated in skill-intensive (unskill-intensive) sectors.     

Patterns of Skill Premia

This paper develops a model to analyse how skill premia differ over time and across countries, and uses this model to study the impact of international trade on wage inequality. Skill premia are determined by technology, the relative supply of skills, and trade. Technology is itself endogenous, and responds to profit incentives. An increase in the relative supply of skills, holding technology constant, reduces the skill premium. But an increase in the supply of skills over time also induces a change in technology, increasing the demand for skills. The most important result of the paper is that increased international trade induces skill-biased technical change. As a result, trade opening can cause a rise in inequality both in the U.S. and the less developed countries, and thanks to the induced skill-biased technical change, this can happen without a rise in the relative prices of skill-intensive goods in the U.S., which is the usual intervening mechanism in the standard trade models.     

Foreign Competition and Wage Inequality

The author argues that increased foreign competition can affect technical choice and skill differentials even when actual imports do not rise significantly. A model is presented of general oligopolistic equilibrium (GOLE) in which a reduction in import barriers (whether technological or policy–imposed) encourages more strategic investment by incumbent firms. The predictions accord with many of the stylized facts: higher skill premia; higher ratios of skilled to unskilled workers employed in all sectors and throughout the economy; little change in import volumes or prices; and rapid technological progress with rather little change in total factor productivity.     

Trade,Wages, and Specific Factors*

In this paper, we use a multisector specific‐factors model with sector‐specific capital and two mobile factors, skilled and unskilled labor, to examine the effects of trade, technology, and factor endowments on the skill premium in US manufacturing industries. Based on this model and data for the US manufacturing sector from 1958–96, we calculate changes in the skill premium and then carry out a decomposition to identify the changes caused by product price changes (trade), technological progress, labor, and capital endowment changes. The decomposition reveals that trade effects, working through product price changes, caused the skill premium to increase moderately. Changes in capital endowments (new investments) had a positive effect on the skill premium, with the strongest impact during the 1980s, while the effect of technological change on the skill premium varied over time. Finally, changes in relative labor endowments had a negative effect on the skill premium.     

技术吸收能力对技术溢出和全要素生产率的影响——基于1995—2009年中国省区面板数据

利用1995—2009年我国28个省(自治区、直辖市)的面板数据,采用数据包络分析法,实证检验了地区的技术吸收能力对地区获得的技术溢出及其全要素生产率的影响。研究表明:省际技术溢出以及来自进出口贸易、FDI和ODI渠道的技术溢出都是影响地区TFP及其分解变量——技术进步、技术效率的重要因素;人力资本、制度因素、技术差距和吸收能力综合变量通过与技术溢出发生交互作用,对地区TFP、技术效率和技术进步产生显著影响。     

SECTORAL EXCHANGE RATE PASS-THROUGH: TESTING THE IMPACT OF POLICY REFORMS IN INDIA

This paper analyses the impact of India's policy reforms on exchange rate pass‐through into import and export prices, using panel data (at one‐digit SITC level) for pre‐ (1980–90) and post‐reform (1991–2001) periods. While the pass‐through into import prices has declined, the pass‐through into export prices (in USD terms) has increased during the 1990s. The results suggest that, relative to rupee depreciation, Indian exporters increased their USD prices around 20% in the 1980s, but decreased them by around 70% in the 1990s. Moreover, the number of sectors exhibiting some degree of pass‐through increased in the 1990s (six), relative to the 1980s (three). These changes may be attributable to the elimination of currency and trade controls, which increased competition among firms and fostered a concern with market share gains in the 1990s over an attempt to use depreciations to increase profits in the 1980s.     

Directed Technical Change

For many problems in macroeconomics, development economics, labour economics, and international trade, whether technical change is biased towards particular factors is of central importance. This paper develops a simple framework to analyse the forces that shape these biases. There are two major forces affecting equilibrium bias: the price effect and the market size effect. While the former encourages innovations directed at scarce factors, the latter leads to technical change favouring abundant factors. The elasticity of substitution between different factors regulates how powerful these effects are, determining how technical change and factor prices respond to changes in relative supplies. If the elasticity of substitution is sufficiently large, the long run relative demand for a factor can slope up.
I apply this framework to develop possible explanations to the following questions: why technical change over the past 60 years was skill biased, and why the skill bias may have accelerated over the past 25 years? Why new technologies introduced during the late eighteenth and early nineteenth centuries were unskill biased? What is the effect of biased technical change on the income gap between rich and poor countries? Does international trade affect the skill bias of technical change? What are the implications of wage push for technical change? Why is technical change generally labour augmenting rather than capital augmenting?     

Industrial de-licensing, trade liberalization, and skill upgrading in India

We investigate the relationship between industrial de-licensing, trade liberalization, and skill upgrading during the 1980s and 1990s among manufacturing plants in India. We use a unique dataset on India's industrial licensing regime to test whether industrial de-licensing during the 1980s and 1990s played a role in skill upgrading, as measured by the employment and wagebill shares of white-collar workers. In addition, we assess the relative contribution of industrial de-licensing and trade liberalization to skill upgrading. We identify two main channels through which industrial de-licensing affects skill upgrading: capital- and output-skill complementarities. Using both difference-in-differences as well as regression discontinuity techniques, we find two important results. First, after controlling for the size-based exemption rule that determined whether or not a plant faced licensing restrictions, industrial de-licensing during the 1980s appears to have increased the relative demand for skilled workers via capital- and output-skill complementarities. Capital- and output-skill complementarities exist for plants in both licensed and de-licensed industries but were stronger in de-licensed industries during the 1980s, prior to India's massive trade liberalization reforms in 1991. Second, regardless of de-licensing, capital- and output-skill complementarities are generally weaker after trade was liberalized during the early 1990s. Together, capital- and output-skill complementarities contributed 75% (57%) and 31% (29%), respectively, of the growth in the employment and wagebill shares of white-collar workers in de-licensed (licensed) industries before trade was liberalized. After trade liberalization, these contributions were smaller. This suggests that trade liberalization may not have played a major role in raising the relative demand for skilled labor during the early 1990s.     

Trade,skill-biased technical change and wages in Mexican manufacturing

This article looks at the relative importance of competing stories, particularly trade liberalization and skill-biased technical change, to explain changes in the skill premium and the real wages of unskilled and skilled workers in Mexican manufacturing using plant-level data. The channel through which technical change is observed is changes in the domestic price of machinery and equipment due to the availability of new and cheaper machines. The analysis also looks at trade-induced skill-biased technical change by taking into account changes in the price of machinery and equipment caused by changes in the tariff rate specific to machinery and equipment. Instrumental variables, including the price of machinery and equipment in the United States, are used to determine causality between the above effects and wages. Thus, the article provides evidence for some recent findings in the literature that link trade liberalization, skill-biased technical change occurring through technology embodied in machines and increases in the skill premium.     

The international wealth channel: a global error-correcting analysis

This article investigates empirically whether shocks to asset prices transmit into the trade balance through consumption and investment for a group of five of the world??s most industrialized countries. We refer to this transmission channel as the international wealth channel and estimate a GVAR model including 29 countries with quarterly data over the period 1981Q1?C2006Q4. Generalized impulse response functions show that after a negative stock price shock US and UK consumption decreases, followed by an improving trade balance. This pattern is also visible for France, but not for Germany and Japan. Stock price decreases are only associated with decreasing investment and an improving trade balance in the UK. For housing, we do find that a negative shock to UK housing prices decreases domestic investment and improves the trade balance. However, this pattern is not visible in the other countries. Finally, a domestic negative real exchange rate shock only has a significantly positive impact on the US trade balance.     

Wage inequality between and within groups: trade-induced or skill-bias technical change? Alternative age models for the UK

According to recent econometric studies, technical progress is the main source of the increasing skill premium in the UK and the US. However, it is not yet clear if technical progress is skill-bias or sector-bias and, most importantly, if the use of foreign technology has a role to play. By using alternative AGE models for the UK economy, I show that both trade-induced sector-bias technical change and skill-bias technical change can explain the stylised facts of the UK economy: tertiarisation; deindustrialisation; openness to foreign markets; increased skill premium; rise in wage inequality within the skilled; and unskilled labour groups. However, the model with sector-bias technical change due to trade performs better, because it can also explain two other important stylised facts: the decline of the wage rate of unskilled workers; and the large increase of imported capital goods.     

Intra-industry Trade and Innovation: An empirical study of the Colombian manufacturing industry

This paper analyses the theoretical and empirical relationship between intra-industry trade (IIT) flows in manufactures and technical change for the Colombian manufacturing industry during the 1970-95 period. A general estimating equation for the sources of change of the equilibrium number of varieties, in which TFP growth is one of its components, is derived from the basic model of trade in differentiated goods with monopolistic competition. Based on that relationship, several estimations on the determinants of IIT flows are carried out. The econometric set up follows a panel data and cross-section estimations of system of simultaneous equations. TFP and IIT indices are the endogenous variables of the system with industry characteristic, trade policy, and innovation-activity variables as the set of exogenous variables. The paper also presents a comparative analysis in the direction and trends of Colombia's IIT flows in manufactures with the Group of Seven, NAFTA, and the Latin American Free Trade area members (LAFTA) since 1974.     

Trade,technology, and China's rising skill demand1

China has experienced rising wage inequality due to rising relative demand for skilled labour. In this paper, we use a sample of 1,500 firms to investigate the impact of trade and technology on China's rising skill demand. We find that export expansion had a negative direct effect (Heckscher–Ohlin type) and a positive indirect effect (export‐induced skill‐biased technical change) on skill demand; the net effect was found positive and accounted for 5 percent of rising skill demand of the sample firms. We find that technical change in Chinese firms was on average skill‐neutral, but majority foreign‐owned firms experienced skill‐biased technical progress that accounted for 22 percent of the rising skill demand of the sample firms.     

Forecasting UK house prices: A time varying coefficient approach

Previous studies of UK house prices, developed from the demand and supply ofhousing or from the asset market approach have been poor in terms of robustness and ex-post forecasting ability. The UK housing market has suffered a number of structural changes, particularly since the early 1980s with substantial house price increases, financial market deregulation and the removal of mortgage market constraints through competition. Consequently, models which assume that the underlying data-generating process is stable and apply constant parameter techniques tend to suffer in terms of parameter instability. This article uses the Time Varying Coefficient (TVC) methodology where the underlying data-generating process in the UK housing market is treated as unstable. The estimation results of the TVC regression of UK house prices is compared with those obtained from three alternative constant parameter regressions. Comparisons of forecasting performance suggest the TVC regression out-performs forecasts from an Error Correction Mechanism (ECM), Vector Autoregressive (VAR) and an Autoregressive Time Series regression.     

ChinHow R&D Investments Influence TFP Growth: Evidence from China’s Large and Medium- Sized Industrial Enterprises

This paper investigates the potential channels through which R&D may influence TFP growth using industry-level panel data of China’s large and medium-sized industrial enterprises over the period of 2000–2007. Comparing with existing literature, we provide a closer look of the relationship between R&D and TFP growth by decomposing TFP growth into efficiency change and technical change components using Malmquist productivity index and distinguishing between upstream R&D spillovers and downstream R&D spillovers. We find TFP grow slightly during 2000–2007, and R&D investment indeed serves as an engine of productivity growth just as endogenous growth theories argued, which is largely because R&D accelerates technical progress even it also results in enlarging technical inefficiency. However, we find a robust negative effect of downstream R&D spillovers on TFP growth, the effects of upstream is positive but not statistically significant. In addition, we do not find the positive effects of human capital on TFP as endogenous growth theories indicated, but find human capital severs as “assimilation device” for R&D spillovers both in promoting TFP growth and increasing technical efficiency even the effects on technical progress is adverse.     

Trade, technology, and unemployment: the role of endogenous skill formation

Abstract .  This paper analyses trade in an asymmetric  2 × 2 × 2  world, where the two countries ('Europe' and 'America') differ in their preferences towards wage inequality. Fair wage considerations compress wage differentials in both countries. European workers are more averse to wage inequality, and Europe is characterized by lower wage differentials and higher unemployment. Allowing for endogenous skill formation, the effects of a globalization shock, global technological change, and a change in the educational capital stock on skill premia and employment levels are derived. In contrast to a model with exogenous factor supplies, international wage and unemployment differentials are affected by global shocks.     

Productivity,energy prices and the great moderation: A new link

We build upon recent research that attributes the moderation of output volatility since the 1980s to the reduced volatility of the Total Factor Productivity (TFP) by investigating the linkage between energy price fluctuations and the stochastic process for TFP. First, we estimate a joint stochastic process for the energy price and TFP and establish that until around 1982, energy prices negatively affected TFP. This spillover has since disappeared. Second, we show that within the framework of a Dynamic Stochastic General Equilibrium (DSGE) model, the disappearance of this energy-productivity spillover accounts for close to 68 percent of the moderation in output volatility.     

Is gold a hedge against inflation? New evidence from a nonlinear ARDL approach

This paper aims to study the role of gold as a hedge against inflation based on local monthly gold prices in China, India, Japan, France, the United Kingdom and the United States of America in periods ranging from 1955 to 2015. We extend the literature by using a novel approach with the nonlinear autoregressive distributed lags (NARDL) model (Shin et al., 2014). The main advantage of this model relies on its ability to simultaneously capture the short- and long-run asymmetries through positive and negative partial sum decompositions of changes in the independent variable(s). Moreover, we rely on local gold prices instead of those from London converted into local currencies like in most of previous studies. The results show that gold is not a hedge against inflation in the long run in all cases. In the short run, gold is an inflation hedge only in the UK, USA, and India. Furthermore, there is no long-run equilibrium between gold prices and the CPI in China, India and France. This difference may be due to traditional aspects of gold and custom controls for gold trade in these countries. Our robustness check suggests that the data time-frequency does not change the specification of the NARDL model but can change conclusions regarding the role of gold as a hedge against inflation in certain countries.