Trade Patterns: Summary of 'Explaining Trade Flows' Article Analysis

This paper summarizes Gourdon's (2009) article, "Explaining Trade Flows: Traditional and New Determinants of Trade Patterns," which investigates whether the forecasts of the factor abundance theory are reflected in empirical findings. The study assesses if novel determinants, when integrated into the traditional Heckscher-Ohlin-Vanek theorem, improve the estimation of trade patterns in commodities. The findings suggest that while traditional factors significantly influence trade structure, new factors are essential for determining comparative advantage. The paper explores the neo-classical model of international trade, highlighting the Heckscher-Ohlin model's emphasis on relative variations in factor endowments. It acknowledges experiential studies indicating a weak relationship between factor endowments and trade flows, and discusses enhancements to the factor content version of the theory. The empirical section details the selection model, construction and measure for commodities’ clusters, construction and measure for factor endowments, and the development and measure of new determinants of trade like TFP and trade intensity variables. The research enhances the prediction of trade patterns, assessing the reliability of export/import forecasts and contrasting the relevance of new determinants relative to conventional factors across different periods. The study concludes that adding new determinants, particularly ICT and infrastructure, significantly influences a nation's comparative advantage, while traditional factors remain critical in determining the probability of a nation being a net exporter. The analysis utilizes a more comprehensive cluster classification, revealing that traditional factors are still significant in shaping the structure of trade among countries.

Running Head: SUMMARY 1
Summary of Article
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Summary of Article
In the article “Explaining Trade Flows Traditional and New Determinants of Trade
Patterns,” Gourdon (2009) intends to determine whether the forecasts of the factor abundance
theory reflect in the findings and data. As a whole, the paper tests if novel determinants used in
traditional model (Heckscher-Ohlin-Vanek theorem) can help improve the estimation of trade
patterns in commodities. At the end of the study, the findings indicate that traditional elements
are very critical in influencing the trade structure but the new factors are needed in order to
determine the comparative advantage. In order to understand the determinants of comparative
advantage, several countries must be considered over time so as to observe the changes over
time. The paper is organized into various sections. Section I is the introduction section that
provides an overview of what the paper would cover. Section II offers a synopsis of the H-O
theory and the modifications added in the models. On the other hand, section III focuses on the
empirical approach, their organization and data used. Further, section IV presents the findings of
the study. Lastly, section V provides a conclusion of the study as a whole.
In the neo-classical model of international trade, nations engage in trade activities with
each other due to their differences. On the other hand, the Heckscher-Ohlin (H-O) model
ascribes that trade patterns often rely on the relative variations between the factor endowments of
nations. However, experiential studies over the years have indicated that there exists a weak
relationship between the factor endowments and trade flows among nations. According to
commodity version of these studies, a nation that has an abundance of capital is most likely to
export capital-intensive goods. On the other hand, the generalization version of the studies
indicates that a capital-abundant nation will export capital services. It is worth pointing that

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various enhancements on the factor content version have been made on the theory and tested, but
their effects on the net trade in commodities remains significantly weak.
According to the conventional explanation of trade according to the H-O theorem, under
perfect competition, homothetic and identical tastes, identical technology and no barriers to
consumption share, technology and factor endowment. There are also other studies that link the
pattern of trade to a nation’s resources have indicated that the relation is significantly non-linear.
However, more recent research has reduced the strictness of the relationship by introducing
‘new’ determinants into the model. These determinants comprise of the total factor productivity
(TFP) at the nation level, the economies of scale at the industry level and, the identical but quasi-
homothetic preferences so that consumption shares are not a function of income per capita. In
this model, frictions such as trade barriers, transport costs and transaction costs are also taken
into consideration. Often, when the new determinants are included, they are incorporated in the
content version. In this respect, the article takes the perspective that investigating the H-O
theorem is best conducted by examining net export patterns instead of the factor content. Mainly,
this is due to the fact that Gourdon (2009) believes that using the new determinants found in
factor content permits the researcher to better understand the determinants of comparative
advantage.
The empirical section of the article is divided into various sections. These sections
comprise of the selection model, construction and measure for commodities’ clusters,
construction and measure for factor endowments. There is also a section on the development and
measure of new determinants of trade. In this section, the researcher measures the TFP to
enlighten the study on how disparities in technology associated with resource endowments could

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help elucidate specialization among countries. Afterward, the development and measure of trade
intensity explanatory variables are explained. Particularly, the variables that determine trade
intensity is divided into political variables and structural variables.
As a whole, the main aim of the research was to enhance the prediction of trade patterns
among countries. Therefore, the study assesses the reliability of the forecast of export/import
status of each nation. A significant section of the paper also seeks to establish and contrast the
relevance of the ‘new’ determinants of comparative advantage relative to the conventional
factors by analyzing transformations over two periods, 1960-1980 and 1980-2000. Noteworthy,
the researcher conducts a goodness of fit study and concludes that adding ‘new’ determinants for
trade patterns facilitates and enhances the prediction of a nation being a net-exporter. Also, the
study finds that improvements arising from the inclusion of ICT and infrastructure have a
significant influence on the comparative advantage of a nation. On the other hand, ANOVA
results from the study indicate that the significance of traditional factors in influencing the
patterns of comparative advantage is still critical when determining the probability of a nation
being a net exporter of a good. However, with regards to certain industrial products, the new
factors are significant in explaining the structure of trade.
All in all, all factors taken into consideration, the study has attempted to enhance the H-O
theory by including the new determinants that comprise of trade impediments, consumer
preferences, returns-to scale and technology. It has also developed factor content literature as
well as trade structure and intensity. When contrasted to other researches, this analysis utilized a
more comprehensive cluster classification and, as a result, more clusters for manufactured

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products. As a whole, the paper’s major findings reveal that traditional factors are still significant
in shaping the structure of trade among countries.

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Reference
Gourdon, J. (2009). Explaining Trade Flows: Traditional and New Determinants of Trade
Patterns. Journal of Economic Integration. 24(1), p. 53-86.