Integration and intra-industry trade adjustment in South Africa

This article analyses intra-industry trade adjustment by the Southern African Customs Union after 1994, and links between trade liberalisation and employment are examined. The traditional Grubel-Lloyd index is complemented by marginal inter- and intra-industry trade measures, and trade expansion of sectors is scaled, related to change in total exports and imports. In three different empirical approaches, large differences are found: in the level of intra-industry trade (IIT) between different sectors (categorised into resource-based, labour-intensive, scale-intensive and differentiated industries); in the level of IIT of individual sectors in trade with the SADC6, the European Union and the rest of the world; and in the economic significance of trade expansion for different industries and with different trading partners. Trade expansion is dominated by differentiated and scale-intensive industries, indicating that the main economic gain of international integration is found in the opportunity to exploit economies of scale in a larger market. IIT and marginal IIT are positively related to increases in labour productivity, and negatively related to employment change. Interindustry trade and both export and import expansions are positively related to employment gain, but only export is positively related to increased labour productivity.     

Intra-industry trade as an indicator of labor market adjustment

Intra-Industry Trade as an Indicator of Labor Market Adjustment. — A growing body of recent empirical research uses measures of change in intra-industry trade as indicators of labor market adjustment. In this paper, we argue that the theoretical foundations for this work are problematic. To make this argument we develop a simple model with both inter- and intra-industry trade and adjustment. We find that changes in domestic absorption, which influence trade flows but which are distinct from production changes, make changes in IIT an unreliable guide to labor market pressure.     

Study of the Measurement and Determinants of Intra‐industry Trade in East Asia*

The present paper investigates the development of intra‐industry trade (IIT) among the East Asian economies over the 1970–1996 period. A dynamic index is used to capture the changes in the structure of trade flows. Based on this approach, IIT is decomposed into horizontal (HIIT) and vertical components (VIIT) and the determinants of each are investigated. The results show that both HIIT and VIIT have exhibited increased importance over the sample period in manufacturing. Using pooled panel data the two‐way trade in all measures of IIT is found to be positively related to the country‐specific variables, such as the market size, exhange rate depreciation, the levels of development and income, and negatively to the geographic proximity of the partners. Economies of scale are seen to have a positive influence on IIT and HIIT, but a negative relationship with VIIT. Although the relative openness of a country's trade regime shows no significant relationship with any form of IIT, a trade imbalance does affect IIT and HIIT flows. The findings have implications for assessing the structural adjustment costs associated with the trade liberalization process as HIIT is associated with demand for variety and relates to two‐way trade in goods of similar quality, while VIIT is driven by international specialization and differences in relative factor endowments.     

Trade liberalisation,structural adjustment and intra-industry trade: A note

Conclusions This note reports tests of the relationship between trade liberalisation and the levels of intra-industry trade, and between levels of IIT and structural adjustment in response to trade liberalisation. It has used a new approach by focussing on the impact of changes in protection on (i) changes in IIT, and (ii) differences in structural adjustment over time in high-IIT and low-IIT sectors.     

The role of comparative advantage in trade within industries: A panel data approach for the European Union

The Role of Comparative Advantage in Trade within Industries: A Panel Data Approach for the European Union. — A large share of EU member states trade is intra-industry trade (IIT) in the period 1985-1996; in particular, IIT is based on products differentiated in quality (vertical IIT). Moreover, exports from southern countries are located mainly at the lower end of the price-quality spectrum, whereas those countries with higher per capita incomes are located at the higher end. According to the vertical IIT models, we hypothesize that commercial specialization of members states over the quality spectrum within industries is explained by differences in technological, physical and human capital. The results show that comparative advantage is an important driver of the pattern of European trade within industries.     

The Dynamics of Intra-industry Trade in ASEAN*

The decision to establish the ASEAN Free Trade Area (AFTA) by the year 2008 has resulted in producers in all ASEAN countries except Singapore raising concerns relating to potential loss of market share and adjustment pressures. Underlying these concerns is the view that the expected growth in intra-ASEAN trade will be dominated by inter-industry or net trade (NT) rather than intra-industry trade (IIT). If most of the expected growth in trade is intra-industry, however, then the short-run resource re-allocation costs are likely to be lower. In this study, we employ a new methodology to analyse the dynamics of IIT in ASEAN. We overcome problems associated with using movements in the value of the Grubel-Lloyd (GL) index by deriving a formula that decomposes the growth in trade into the contributions of growth in IIT and NT. Our results suggest that the role of IIT in trade growth has been increasing in importance, and thus much of the recent concern that threatens the viability of AFTA may be misplaced.     

On the measurement of product quality in intra-industry trade: An empirical test for China

A relatively recent development in the intra-industry trade (IIT) literature is the measurement of the simultaneous import and export of quality-differentiated products, commonly known as vertical and horizontal IIT. A recent paper from Azhar and Elliott [Azhar, A. K. M. & Elliott, R. J. R. (2006), On the Measurement of Product Quality in Intra-Industry Trade, Review of World Economics, Vol 142 no 3, pp 476–495] analyses various approaches for disentangling vertical and horizontal IIT and suggests a complementary methodology. To investigate the robustness and sensitivity of the existing approaches we examine data on the nature of trade flows between China and its East Asian neighbours and show that in 2002 China tended to export low quality versions of its manufactured goods to Malaysia, Thailand and the Philippines.     

The Skill Content of Inter- and Intra-Industry Trade: Evidence for the United Kingdom

In this paper we investigate the relative importance of net exchanges of skills embodied in intra-industry and inter-industry trade for the UK’s trade with some middle income countries. We also separately measure the net exchanges of skills embodied in vertical and horizontal intra-industry trade (IIT). We find that there are substantial factor exchanges involved in IIT, implying that traditional factor content studies may have seriously underestimated the actual factor content of total trade flows. This means that the adjustment effects of IIT may be greater than is often presumed. We also find, in line with theory, that vertical IIT involves similar net exchanges of labour of different skills to that of inter-industry trade, while horizontal IIT involves much smaller net exchanges of skills. JEL no. F11, F14     

国家特征视角下中国产业内贸易决定因素实证研究——基于2000～2007年面板数据的分析

本文首先运用边际产业内贸易指数对2000～2007年中国的总体、水平型和垂直型产业内贸易水平分别加以测度,然后运用面板数据从国家特征角度对产业内贸易决定因素进行跨时期实证研究。结果表明:经济规模、外商直接投资和贸易不平衡是影响我国产业内贸易的主要国家特征因素,其中,经济规模与我国产业内贸易尤其是水平型产业内贸易呈正相关,且显著性有增强趋势;外商直接投与我国产业内贸易呈负相关,且影响程度有减弱趋势;贸易不平衡与我国总体、水平型和垂直型产业内贸易都呈明显负相关,且影响程度有增强趋势。另外,地理位置和政治文化因素对我国产业内贸易发展也有不容忽视的影响。     

Intra-industry trade of India: Trends and country-specific factors

Intra-industry Trade of India: Trends and Country-Specific Factors. — The analysis in this paper confirms that trade liberalization biases trade expansion towards intra-industry trade (IIT) in India. The increased level of IIT is largely exportled, that is, caused by a faster growth of exports than of imports. India’s IIT is more intense with high-income countries and is characterized by a greater extent of complementarity. Further, certain country-specific factors which are found to be crucial in the models of vertical IIT are pertinent in influencing the pattern of India’s bilateral IIT.     

Does Immigration Help to Explain Intra-Industry Trade? Evidence for Spain

This paper argues and provides evidence that the stock of immigrants in a country has a positive effect on the share of its bilateral intra-industry trade (IIT). The paper links the literatures about immigration and trade and about IIT determinants. The key is that immigration contributes to trade transaction costs reduction and this would benefit the trade in differentiated products, i.e. IIT, more than the trade in homogeneous products, i.e. inter-industry trade. We test this hypothesis using Spanish data and departing from the models developed by Helpman. Results are robust to different IIT measures, estimation methods and specifications. JEL no. F10, F22, F14     

How important is intra-industry trade in trade growth?

Empirical work on intra-industry trade (IIT) is almost 30 years old. Initial research sought to identify if IIT was a significant share of total trade (TT). The Grubel-Lloyd (GL) index was widely used for this purpose. Interest has since shifted to the changing importance of IITover time. Using movements in the GL index to infer the importance of IIT over time is not only vague, but can be misleading. In this article, we measure the contributions of growth in net trade (NT) and IIT to the growth in TT. To understand changes in IIT over time, we also derive the contributions of imports and exports to the growth in TT, NT, and IIT. All our formulas are illustrated with data for 205 Australian manufacturing industries.     

On the Measurement of Product Quality in Intra-Industry Trade

The world has witnessed a dramatic increase in trade over the last forty years. Much of this growth in trade is intra-industry in nature. A relatively recent development in the intra-industry trade (IIT) literature is the measurement of the simultaneous import and export of quality-differentiated products, commonly known as vertical and horizontal IIT. In this paper we compare the Greenaway, Hine and Milner (1994) and Fontagné and Freudenberg (1997) approaches to disentangling vertical and horizontal intra-industry trade and examine some of the implications of employing simple ratios to define the boundary between product quality types. We present a complementary approach based on the traditional Grubel and Lloyd (GL) index and demonstrate with numerical examples its versatility and applicability at the product level. JEL no. F19     

Country-specific factors and the pattern of horizontal and vertical intra-industry trade in the UK

Country-Specific Factors and the Pattern of Horizontal and Vertical Intra-Industry Trade in the UK. - A large number of empirical studies have investigated the relationship between country-specific factors and total intra-industry trade (IIT). One important shortcoming of this literature is that it ignores the distinction between horizontal and vertical IIT and ignores the fact that they may have different determinants. This paper disaggregates UK IIT into its horizontal and vertical components and, using bilateral trade data, estimates a series of models incorporating countryspecific variables. The results suggest that vertical IIT is more important in the UK than horizontal IIT and that the inter-country pattern of vertical IIT is systematically related to a range of explanatory variables.     

经济一体化下中国贸易自由化调整成本实证研究——以中国和澳大利亚自贸区建立为例

在国际经济一体化背景下,本文从边际产业内贸易的分析角度对中国和澳大利亚贸易自由化调整成本进行实证分析。首先采用A指数对1992～2008年两国23个主要工业部门的边际产业内贸易水平进行测度,然后分别采用B指数比率和S指数比率对两国主要工业部门的贸易绩效和贸易自由化调整成本进行测度,最终得到一致结论:中国主要工业部门的贸易绩效整体较好,贸易自由化调整成本相对较小,但仍需进一步改善;"中高技术密集型制造品"行业调整成本低于"初级产品"和"劳动力和资源密集型制造品"行业;大部分"中高技术密集型制造品"行业的贸易自由化调整成本呈现明显下降趋势等。     

Labour-market effects of intra-industry trade: Evidence for the United Kingdom

Labor-Market Effects of Intra-Industry Trade: Evidence for the United Kingdom. — According to the “smooth adjustment hypothesis”, the labor-market adjustment costs entailed by trade liberalization are lower if trade expansion is intra-industry rather than inter-industry in nature. In this paper, we study the link between trade and labor market changes in UK manufacturing industries during the 1980s. We use industry-level measures of unemployment duration and wage variability as proxies for adjustment costs, and we relate them to various measures of intra-industry trade. Our evidence offers some support for the smooth adjustment hypothesis.     

Vertical intra-industry trade and foreign direct investment in East Asia

As economic integration in East Asia progresses, trade patterns within the region are displaying an ever-greater complexity: Though inter-industry trade still accounts for the majority, its share in overall trade is declining. Instead, intra-industry trade (IIT), which can be further divided into horizontal IIT (HIIT) and vertical IIT (VIIT), is growing in importance.In this paper, we set out to measure and examine vertical intra-industry trade patterns in the East Asian region and compare these with the results of previous studies focusing on the EU, to which such analyses so far have been confined. Based on the supposition that VIIT is closely related to offshore production by multinational enterprises, we then develop a model to capture the main determinants of VIIT that explicitly includes the role of FDI. The model is tested empirically using data from the electrical machinery industry. The findings support our hypothesis, showing that FDI plays a significant role in the rapid increase in VIIT in East Asia seen in recent years. J. Japanese Int. Economies 17 (4) (2003) 468–506.     

Patterns and determinants of intra-industry trade in Asia

Intra-industry trade (IIT) has gained in importance across Asia as a result of the rapid growth of Asian economies and their key role in the international fragmentation of production. This paper examines the level of IIT for 22 countries in East, Southeast, South, and Central Asia in 2003. IIT is measured as a multilateral trade-weighted index and is reported for ten different categories of goods in the primary and secondary sectors. In addition, the determinants of IIT are investigated using a Tobit regression model. The results indicate that ASEAN and the high-income countries in East Asia exhibit the highest levels of IIT, followed closely by China and India. R&D spending, openness, and a higher share of manufactured exports were found to promote IIT, while geographical distance and the difference in economic size had an adverse effect, especially for manufactured goods. The ASEAN free trade area was most prominently associated with IIT across all SITC categories. Central and South Asian regional trade agreements had a positive influence on IIT in primary products.     

An empirical examination of the role of vertical product differentiation in north-south trade

Conclusions Our results indicate that the general line of reasoning embodied in the recently developed models of North-South IIT would seem to be valid. The various measures of income and size similarity do seem to affect North-South IIT in the theoretically predicted way. Further, this type of trade is positively impacted by the direction of quality differences and, to a lesser degree, the extent of quality differences. Finally, it would appear that modeling this type of trade on a bilateral basis using data detailed by both industry and country has not only theoretial appeal, but is empirically useful. The results, however, do not address the mechanism which generates these quality differences between the exports of the North and South. The theoretical models use different assumptions concerning the process which generates the quality differences. Such differences may be related to capital abundance as in Falvey [1981]; a Ricardian form of comparative advantage as in Flam and Helpman [1987]; or a complex combination of the two.¹⁵ Some preliminary evidence on the role of quality differences has been given in this paper. The difficult task of explaining what generates these differences is an important issue left unaddressed at this point.