Educational Levels and Export Performance of Iranian Industries
Vahid Mehrbani
University of Tehran, Tehran, Iran.
DOI: 10.4236/tel.2018.88094   PDF    HTML   XML   672 Downloads   1,411 Views  


This paper examines a composite implication of human capital theory and knowledge-based economy literature with regard to export performance of Iranian industries. It is expected that education particularly in higher levels contributes to the expansion of export. This is the hypothesis that is tested by underlying the Branson’s export function and using a panel data of industries with two-digit codes in 2003-2013. Results show that education only in MA (MS) and PhD levels has positive and significant effect on export but lower levels of education have no effect. The coefficients indicate that a 1 percent increase in completion of MA (MS) and PhD degrees will increase the export of industry by 0.18 (0.15) percent respectively. It seems that education contributes to export in higher levels but has no important role in lower levels. It is indicated that the results are somewhat in contrast to filter theory proposed by Arrow (1973).

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Mehrbani, V. (2018) Educational Levels and Export Performance of Iranian Industries. Theoretical Economics Letters, 8, 1460-1474. doi: 10.4236/tel.2018.88094.

1. Introduction

Modern advanced economies are discerned with wide and deep applying knowledge in production of goods and services as well as export sector. This situation is named knowledge-based economy that has made a wave of orientation to knowledge in worldwide exclusively in new-emerged economies. Today, the post-industrial economy is based on knowledge and neglecting this leads to backwardness in economic development. The backbone of this issue is observed in human capital theory that claims education is an investment process which accumulates knowledge as a type of capital. Therefore, every society that establishes better educational system would be more successful in economic performance.

One of the best examples in confirming this claim is the vast economic growth of East Asian countries which is called Asian economic miracle. Between 1960 and 1985, real per capita income in Japan and Four Tigers increased more than four times and more than twice in three south Eastern Asian countries [1] . Different explanations have been presented to descript the reasons of this growth but one of them that is indisputable, impresses on the pivotal role of education [2] [3] . Private domestic investment and rapidly growing human capital were the major engines of growth [1] . Almost in all Asian economies with fast growth, improvement and transformation of educational systems have been dramatic [1] .

What explains this process and evidence is endogenous growth models that introduced and developed by Romer [4] , Lucas [5] , Azariadis and Drazen [6] and Stokey [3] . These pioneers have differently theorized the role of human capital or education in economic growth. The purpose of these studies was to show that education directly is one of the production and growth sources by increasing productivity, whether formal education that is supplied in schools and universities or non-formal education that is provided as on-the-job training in firms. For example, Romer [7] observed the positive effect of education on growth in all market-based economies. Benhabib and Spiegel [8] used a cross section analysis and shown that human capital has no effect on growth of per capita income but has positive impact on growth of total factor productivity. Fleisher et al. [9] studied the role of education in affecting productivity of labor in China. They found that more educated workers had stronger effect on value added than less educated ones. On the contrary, Bils and Klenow [10] found that not only the effect of schooling on economic growth is weak but also the negative effect is strong.

Not to mention the direct effect of education on output, there is another link that describes the role of education in economic expansion which is export. The latter issue has been apparently demonstrated in East Asia. As Stokey [3] outlined, the fast growth of per capita income in most of newly industrialized countries such as East Asia has been accompanied with quick expansion of export volume and rapid growth of education.

Export is one of the most important sectors in any economy because whatever this sector expands, more and newer markets open are opened to the domestic producers and, hence, economic growth would be more achievable. It is claimed that export is more expected to use knowledge inputs than other areas and role of education in this sector is more appeared.

The purpose of this paper is to investigate the role of education in expansion of export in Iran’s economy. Methodology of current analysis is a deductive approach. In this line, a top-to-down reasoning is used to describe the nature of relationship between various variables which are of interest, that is, export and human capital forms as educational levels. This procedure leads to hypothesis that must be tested. Afterwards, regression analysis based on Branson’s theoretical model [11] is used to test hypothesis and reaching to empirical evidence. According to evidence, it is attempted to conclude. Nevertheless, the limitation of this study is that it is confined only to industry and does not include the whole of economy. However, the contribution of current study is that the export performance of industries is analyzed with respect to labors with different levels of schooling and, hence, the educational levels are isolated to lead to clear-cut evidence. The hypothesis is that the higher the level of education, the more export of industries. Evidence from a developing economy such as Iran can help to identifying the importance of formal education in real economy. Accordingly, sections of paper are organized as follows. Next section reviews the literature. Third section introduces empirical model with data. The forth includes findings and the fifth concludes.

2. Literature Review

Emergence of human capital concept and outcomes of its accumulation at the outset of 1960s by pioneering Schultz [12] and Becker [13] led finally to understanding this issue that capital formation by education is one of the engines of economic growth. What supports to this idea is the positive effect of education on labor productivity [14] . But, why education improves the productive ability of labor? Various types of education enable ones to do particular jobs and activities or enable labor to do the certain work more effectively [15] . The reason of this superior feature of educated persons is that more literate people are more efficient consumers of information [16] because education enhances one’s ability in receiving, decoding and understanding information [15] . This is, in effect, a skill that falls to the lot of educated workers and the same as Becker [17] argued, education teaches workers valuable skills that make them more productive.

Human capital approach to allocative efficiency assumes that allocative ability is mostly an acquired skill, not an innate one. This skill is a kind of human capital in the sense that it is acquired at a cost and generates a valuable stream of services in future. It is acquired by schooling and searching for useful information [18] . Since education is a process which accumulates knowledge and, in viewpoint of development analysts, such accumulation of knowledge (human capital) has pivotal role in economic growth [19] and development process [20] , we can perceive the importance of education in a developing economy.

Arrow [21] posed the concept of learning-by-doing. The implication of his argument is that an educated person learns more rapid and increases efficiency better and more extensive than an uneducated one. In other side, there is on-the-job training. This type of education makes the capital-saving technological progress in firm. As Feldman noted, ideas are embedded in individuals who have skill, knowledge and know-how to engage in technological advance [22] . Accordingly, putting labor at on-the-job training process can help to technological progress and can lead to producing more outputs by the same inputs in which is equivalent to higher productivity of factors (see for example: Sepúlveda [23] ).

Undeniable role of education in economic expansion provided a background for analyzing this issue at the micro level and linked this to the performance of firm. Grant conceptualized the firm as an institution for integrating knowledge [24] . Spender proposed the theory of knowledge-based firm and considered it consisting of insights beyond the theory of production function and resource-based firm [25] . Otani defined the firm’s entrepreneurial capacity as the knowledge of firm’s manager about comprising elements of firm [26] . He believed that human ability is limited but human capital can infinitely cause the development of firm. Pennings, Lee and Witteloostuijn also indicated that organizational human capital (professional education) curtails the probability of firm’s dissolution [27] . If this to be true, the firm is a place that different specialties of labor force combine together which result the creation of new and knowledge-based products. Therefore, firms employ both tangible resources (such as buildings and financial resources) and intangible resources (like human capital) in the development and implementation of strategies [28] . However, it seems that value-creating assets of a service firm rest more on its human capital than on its physical infrastructures [29] .

Innovation is one of the performance aspects of firm that is a main determinant in finding new markets and reaching to more sales. In viewpoint of Schultz [30] , the assumption is that education―even at primary level―increases the individual’s ability in understanding new problems, illumination of these problems and finding the ways to solve them. Perhaps on the basis of this reason, Feldman [31] assumed that very much educated individuals make more innovations. This claim is quite straightforward and logical. The individual by schooling and getting more awareness learns to propose new options for quitting any bottleneck and making any change. For example, consultant and designer managers in a corporation can create new products and, thereby, precede rivals in the market. In this line, Andersson and Ejermo [32] studied the performance of 130 Swedish companies with regard to innovation. They found that there is a positive relationship between the innovativeness of a corporation and its accessibility to university researchers. Accordingly, the more a firm employs specialist labor force, the more improvement in competitive advantage in the market.

This issue is visualized in export performance of a firm because export means going beyond national economy and presence in new markets to sell more products. Undoubtedly, in very intense international competition for capturing markets, the producer would be successful that earns more competitive advantage. Hence, it seems that firms innovate more can better expand their exports. Greenhalgh et al. [33] by examining the effect of innovation on Britain’s export observed that innovation has positive impact on export volume in most industries. Wakelin [34] also investigated the role of innovation in export behavior of British firms. The main finding of her research is that the number of past innovations has a positive impact on the probability of an innovative firm exporting. Roper and Love [35] studied the determinants of export performance among the UK and German manufacturing plants. They showed that product innovation has a strong effect on the probability and propensity to export in both countries. Being innovative is positively related to export probability in both countries. Since exporter firms are more subject to technological advances and changes in markets, they utilize the human capital more efficiently than other parts of economy. The reason is that educated workers can adapt themselves more rapidly with sophisticated technologies and with fast changes of production which is requisite for competitiveness in world markets [36] . In addition, internalization of human capital may enhance a firm’s core capabilities and lower transaction costs; it also accrues managerial and bureaucratic costs [37] .

These discussions indicate that the higher the level of managers’ and workers’ education, the more successful firm in export performance. Various researches confirm this idea [29] [35] [36] [51] [52] [53] [54] [55] . The most researchers analyzed the effect of education on export on the basis of production function approach while it is directly introduced the export function in current paper to estimate the impact of education.

Many researchers have examined the factors of export while only some of them have attempted to enter educational variables into their empirical analyses. At this point, some selected recent studies that have been done in terms of determinants of export are reported in Table 1 in summary. As is observed in Table 1, most studies have not covered the role of education. Only Rodríguez-Pose et al. [46] and Henn et al. [45] paid attention to education but the used measure for education was a single one that didn’t include the details of educational situations. There is a lack of evidence focusing on the role of education whilst current study seeks to resolve this deficiency.

3. Empirical Model and Data

According to the represented arguments and hypothesis, we expect that export sector utilizes more educated human force which this feature contribute to the expansion of mentioned sector. But it is a wisely guess that particularly in a developing economy like Iran cannot be necessarily trusted because export in a such economy is not based on sophisticated and produced by knowledge of high-tech products. In this situation, it is possible that using educated employees leads weakly to growth of export. Therefore, we inevitably must test this claim.

1Exchange rate has measured by domestic currency per foreign currency.

Accordingly, the export function proposed by Branson [11] is used as the basis of empirical analysis. This function represents export volume (X) as a (negatively) function of both exchange rate1 (ER) and domestic prices (P). This is the simplest function of export.

X = X ( E R , P ) (1)

The theoretical background of this model is the so called “demand theory” in

Table 1. Summary of some recent relevant studies.

microeconomics. The core of this theory is that following an increase in price, the demand for goods rises. Consequently, as the domestic prices go up the domestically produced goods become high-priced which means that these goods are more expensive in international markets now. Therefore, the demand for domestic goods by foreign consumers decrease and exports lessen then. In addition, according to Branson’s theoretical framework [11] , as exchange rate goes down the national currency depreciates and hence domestic producers who attend in foreign markets are motivated to export more because they can earn more national currency from export now. This idea is also based on demand theory because exchange rate determines the purchasing power of foreign consumers in terms of goods. As exchange rate rises, the purchasing power of foreign consumers increase and their demand ascend.

Carlin and Soskice [56] also inserted a measure of competitiveness into the export equation. In this line, the degree of competition in industry affects export performance of firms too thereby that the more competitive market structure, the more export takes place [57] [58] . Moreover, on the basis of human capital and firm theory, education of employees (labors and managers) also influences export. On the whole, the generalized form of Equation (1) is defined as follows:

X = X ( E R , I N F , C O M , I N V , E C , R D , E D U ) (2)

Equation (2) constitutes the empirical model in current studywhile the error term is dealt with in the regression. Table 2 includes the introduction and definition of variables which are used in estimations.

2The government in Iran even provides subsidies for energy which this attempt makes access to energy to be easier and cheaper.

It is noted that domestic price level is replaced by inflation rate. The expectation is that high inflation impedes the growth of export. Investment is also a control for export because more investment enhances firm’s capability to enter to world markets. In addition, since the study is confined to industry sector and Iran’s economy is identified by affluence of energy resources which facilitates gaining them for industrial producers,2 the quantity of energy inputs potentially have effect on export volume. Consequently, a vector of energy conveyors has been placed in Equation (2). Besides, R & D expenditures may be an influence factor of export which is employed in model.

Vector of education consists of variables which of them refer to a level of education or sum of some levels. Educational levels are primary to PhD. In order

Table 2. Description of variables.

Source: Descriptions presented by author.

to compare education in school to university, 12 years of education or less with higher education are considered. Use of these two variables helps us to examine the importance of education at higher level as a whole and identify whether higher education excel lower level or not.

Data are restricted to Iranian industrial firms with 10 employees or more in 2003-2013. The reason of selecting the year 2013 as the end of period is that the data have not been accessible to extend the period to recent years. Thus, this is another limitation of research. Industries have been selected according to two-digit codes of ISIC. The data have been gathered from Statistical Center of Iran [59] . Iran is a developing country which oil constitutes the large portion of its export while has tried recent years to develop industry and non-oil export. Hence, presenting empirical evidence about export performance of industry sector in Iran, particularly with emphasis on role of education, can demonstrate some facts on the degree of success of policies―especially support to knowledge-based industries―which focus to industry.

4. Results

Our purpose is to estimate Equation (2) by using a panel data of Iranian industries. At first, Hausman test is done to recognize the method of estimation. The basic tested model in no logarithmic form showed that the Chi-square statistic is equal to 55.5 which is statistically significant at 1% level. Therefore, the fixed effect method is used to estimate regressions.

It is useful to examine the results of unit root test of variables prior to estimation of regressions. Table 3 presents these results. It is observed that all variables are stationary at level except exchange rate and electricity. Consequently, we can use the most variables without making difference but two recently mentioned variables. Equation (2) is estimated in various forms. All regressions have been specified as log-log because this manner gives us the elasticities. This approach helps us to compare the magnitude of impact of different levels of education on export. The results of estimations are presented in Table 4 and Table 5.3

3The robustness check has been accomplished but does not present.

Table 3. Unit root test of variables at level by Levin, Lin & Chu t* method.

Source: Findings accessed by author. Note: Numbers denoted by *, ** and *** in second column are significant at 1%, 5% and 10% respectively.

Table 4. Determinants of export in Iranian industries (Panel EGLS coefficients).

Source: Findings of current research. Note: All variables are logarithmic. Numbers in parentheses at the right of coefficients are absolute value of t-statistics. *, ** and *** are significant at 1%, 5% and 10% respectively.

Table 5. Determinants of export in Iranian industries (Panel EGLS coefficients).

Source: Findings of current research. Note: All variables are logarithmic. Numbers in parentheses at the right of coefficients are absolute value of t-statistics. *, ** and *** are significant at 1%, 5% and 10% respectively.

Table 4 represents the estimation of Equation (2) while the vector of education contains schooling less than tertiary, that is, 12 years of schooling or less. Regression 1 in Table 4 is benchmark model which does not include education. Regressions 2 and 3 indicate that completion of high school or lower schooling has no significant effect on industrial export. Regression 4 also shows that education lower than tertiary does not contribute to more export as a whole. This observation confirms that lower levels of education which take place in school is not an important factor of export. Table 4 also reveals, as expected, that exchange rate, investment, competition and gas have positive effect on export. The impact of inflation coincides to theory whereupon higher inflation leads to decrease of export. On the contrary, electricity, fuel and R & D do not show significant effect.

In Table 5, former educational variables have been replaced by tertiary education. It is obvious that higher education has no significant effect in all regressions. None of educational levels in university influence the export of industries. However, the variable HE which includes the whole of employees who have graduated from university does not show any effect, which is in line with variable SE. Apparently, there is evident distinction between tertiary in one hand and primary and secondary in other hand. Two years college has no significant effect but BA or BS degree reveals the negative and statistically significant effect.

On the contrary, MA or MS and PhD degrees demonstrate the positive and significantly effects. That is, Iranian industries’ export products need to high knowledge and specialty which means Iranian economy becomes more knowledge-based to produce goods based on knowledge and employ very high educated labor. Comparing the coefficients (elasticities) of these two variables sheds light on that MA (MS) degree has somewhat more strong effect than PhD degree. A one percent increase in MA (PhD) employees leads to 0.18 percent (0.15 percent) increase in export.

5. Concluding Remarks

This study has been organized in the line of human capital theory and knowledge-based economy literature to examine the issue whether education contributes to the growth of Iranian industries export, and if it is true, do different levels of education have different roles. The expectation was that the export of industry sector to be more dependent to high educated employees than to lower levels of education. Evidence suggests that employing educated employees leads to the growth of industrial export as human capital approach demonstrates. Therefore, literate labor is preferred to illiterate ones but the positive effect of education is credible only for the top levels of higher education. This means that higher levels of education have achievements for manufacturing. These findings reveal that industry approaches to knowledge-based economy in Iran and need to highly professional labor. Iranian industries export more processed products now which are produced by employing just literate labor armed with high specialty. Consequently, it seems that education is a determinant of export in some but not all levels. Hence, perhaps it can be concluded that these results are somewhat in contrast to filter theory proposed by Arrow [60] in the sense that higher education has no effect on productivity. Accordingly, higher education is so capable to increase productivity of Iranian industries to be eligible to compete with rivals in world markets.

Conflicts of Interest

The authors declare no conflicts of interest.


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