An empirical analysis of the Linder theory of international trade for South Asian countries.
This paper presents empirical evidence in support of the Linder theory of international trade for three of the South Asian countries, Bangladesh, India, and Pakistan. This finding implies that these countries trade more intensively with countries of other regions, which may have similar per capita income Noun 1. per capita income - the total national income divided by the number of people in the nation
income - the financial gain (earned or unearned) accruing over a given period of time levels, as predicted by Linder in his hypothesis. The contribution of this research is threefold: first, there is new information on the Linder hypothesis The Linder hypothesis was proposed by economist Staffan Burenstam Linder in 1961 as a possible resolution to the Leontief paradox, which questioned the empirical validity of the Heckscher-Ohlin theory (H-O). by focusing on South Asian countries; second, this is one of very. few analyses to capture both time-series and cross-section elements of the trade relationship by employing a panel data set; third, the empirical methodology used in this analysis corrects a major shortcoming in the existing literature by using a censored cen·sor
1. A person authorized to examine books, films, or other material and to remove or suppress what is considered morally, politically, or otherwise objectionable.
2. dependent variable in estimation.
The purpose of this research is to examine the empirical validity of one of the main theories of international trade, the Linder hypothesis, from the perspective of South Asian countries, Bangladesh, India, and Pakistan. While attention in development economics in recent years has focused increasingly on international trade issues, there is no clear consensus at present as to whether or not trade is beneficial to developing economies. Many economists have asserted that increased levels of trade on the part of developing economies are not only desirable but also necessary if sustained economic growth and development are to occur. A smaller but equally vociferous group insists that trade only deepens the dependency of developing countries on the developed world and, in so doing, ensures continued under-development. Whatever the effect of trade on the developing world, it is indisputable that trade has been expanding in most developing countries in recent years [see United Nations (2004)]. It is essential therefore, to gain an understanding of the existing trade patterns in developing countries and to gain an insight into how these patterns are changing.
The contributions of this paper lie in its attention to three factors. First, we consider the Linder hypothesis in the context of developing countries. The application of the Linder theory to developing economies has been neglected in the existing literature despite the growing need to understand the increasing levels of trade occurring in these countries. Second. our research extends the existing literature by estimating a fixed-effects panel data model. This methodology not only allows us to examine the validity of the Linder theory over a large number of countries but, also, allows us to capture relevant trends that have occurred over time. Despite the tremendous advantage that the use of panel data offers, relatively few analyses have employed data of this nature: only Thursby and Thursby (1987) have previously used combined time-series and cross-section data in studying the empirical validity of the Linder hypothesis. Third, our analysis makes use of a censored dependent variable in order to properly measure the economic behaviour of all potential trading partners. This approach corrects a methodological shortcoming of previous analyses in which the magnitude of the Linder effect has been over or under estimated through the exclusion of information on those countries that have a zero or negative desire to export to a given country. The failure to model the Linder theory in this context must call into question the econometric e·con·o·met·rics
n. (used with a sing. verb)
Application of mathematical and statistical techniques to economics in the study of problems, the analysis of data, and the development and testing of theories and models. validity of existing empirical work in this area. Our analysis presents new and more accurate empirical evidence to explain existing trade patterns in developing countries.
The plan of the rest of this paper is as follows. The next section discusses the Linder hypothesis and its relationship to the competing "factor-proportions" theory. Section 3 reviews the existing literature on the empirical validity of the Linder hypothesis. Section 4 presents the econometric model Econometric models are used by economists to find standard relationships among aspects of the macroeconomy and use those relationships to predict the effects of certain events (like government policies) on inflation, unemployment, growth, etc. used in our analysis and also discusses the fixed-effects Tobit estimation procedure employed here. A discussion of the empirical results is contained in Section 5. The final section offers conclusions and suggestions for future research.
2. REVIEW OF RELEVANT LITERATURE
2.1. Theoretical Perspective
Some of the most basic questions that trade theory attempts to address involve patterns of trade: what determines why a country exports and imports certain goods, and with what countries does it exchange these goods? Since the early part of this century, the most widely used theory employed the factor proportions model. Eli Heckscher Eli Filip Heckscher (Stockholm November 24, 1879 - Stockholm December 23, 1952) was a Swedish political economist and economic historian.
Heckscher was born in Stockholm into a prominent Jewish family, son of the Danish-born businessman Isidor Heckscher and his spouse Rosa (1) pioneered this model in 1919, and Benil Ohlin (2) in 1933 and Paul Samuelson (3) in 1949 subsequently amended it.
This model posits that patterns of trade are determined by differences in relative factor proportions. In short, countries that are relatively well endowed en·dow
tr.v. en·dowed, en·dow·ing, en·dows
1. To provide with property, income, or a source of income.
a. with labour will tend to export goods that use labour relatively intensively in their production, while relative capital abundance implies relatively capital-intensive exports. This model, then, suggests that the pattern of trade is largely a supply-side phenomenon.
This model posits that patterns of trade are determined by differences in relative factor proportions. In short, countries that are relatively well endowed with labour will tend to export goods that use labour relatively intensively in their production, while relative capital abundance implies relatively capital-intensive exports. This model, then, suggests that the pattern of trade is largely a supply-side phenomenon. The Heckscher-Ohlin-Samuelson (HOS) model has been challenged in several ways. Leontief (4) (1953), in examining import and export data from the United States United States, officially United States of America, republic (2005 est. pop. 295,734,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third largest country in population and the fourth largest country in area. in 1947, discovered that U.S. exports are on average relatively labour intensive while U.S. imports are relatively more capital intensive. Since the U.S. was and is widely perceived to be a capital abundant country relative to almost any other country, this finding seemed to contradict con·tra·dict
v. con·tra·dict·ed, con·tra·dict·ing, con·tra·dicts
1. To assert or express the opposite of (a statement).
2. To deny the statement of. See Synonyms at deny. the HOS model and became known as the "'Leontief Paradox". Some evidence regarding the developing-country case comes from Bharadwaj (5) (1962) who found that the HOS model does not adequately explain bilateral trade between the U.S. and India. Bowen, Leamer and Sveikavskas (6) (1995) conclude from their study of 27 countries (some of which are developing countries) that the Heckscher-Ohlin model The Heckscher-Ohlin model (H-O model) is a general equilibrium mathematical model of international trade, developed by Eli Heckscher and Bertil Ohlin at the Stockholm School of Economics. explains observed patterns of trade rather poorly. Even the studies that have found support for the Heckscher-Oblin model have come under fire for data and methodology problems. Deardorff (7) (1984) states that the basic model is useful in understanding the commodity composition of international trade, but it is otherwise "fairly helpless". Other researchers have noted that the HOS model suggests that a great deal of trade should occur between the developed and the developing world, since the differences in capital-labour ratios would be widest in such cases. However, the fact that the majority of international trade is conducted between developed countries, which typically have very similar factor endowments, seems to call into question the validity of this theory.
Finally, there are also theoretical reasons to question the validity of the factor-proportions theory as it pertains to developing countries. Many of the underlying assumptions of the factor-proportions theory are not likely to be satisfied in developing economies. For example, the assumptions of full employment, perfect factor mobility and identical technology across countries are largely untenable in the developing-country setting. While some researchers have attempted to broaden the HOS model so that it better explains the stylised Adj. 1. stylised - using artistic forms and conventions to create effects; not natural or spontaneous; "a stylized mode of theater production"
conventionalised, conventionalized, stylized facts, others have developed alternative models. One such alternative was the theory proposed by Linder (8) (1961). In contrast with the supply-side orientation of the HOS model, the Linder theory is primarily demand-side oriented o·ri·ent
1. Orient The countries of Asia, especially of eastern Asia.
a. The luster characteristic of a pearl of high quality.
b. A pearl having exceptional luster.
3. . Linder believed that the pattern of trade derives from "overlapping demand". That is, countries generally produce goods for the domestic market and then export the surplus. It is reasonable to conclude, therefore, that countries that have an interest in acquiring this surplus would have demand patterns similar to those of the exporting country.
Linder's prediction that most trade in the world should occur between similarly endowed countries is no paradox; it is, rather, the natural result of demand-driven trade. While Linder's theory was not put forth in the form of a mathematical model, it is nonetheless powerful and thought provoking pro·vok·ing
Troubling the nerves or peace of mind, as by repeated vexations: a provoking delay at the airport.
pro·vok . Some researchers have argued that the economic characteristics of developing economies may preclude their inclusion in any studies of the Linder phenomenon. Hanink (9) (1988), for example, noted that "high levels of trade between similar, but poor, countries is unlikely". While this may have been true in Linder's day, significant levels of trade occur between developing countries in the present decade. As evidence of this tact, consider the data in Table 1, which lists, for each of the three South Asian countries of our analysis, the proportion of imports that originate o·rig·i·nate
1. To bring into being; create.
2. To come into being; start. from other developing countries. These data show, for these three countries, that approximately one-fifth to one-half of all imports originate from such sources.
Even in Pakistan, a country that has historically imported a significant quantity from the industrialised Adj. 1. industrialised - made industrial; converted to industrialism; "industrialized areas"
industrial - having highly developed industries; "the industrial revolution"; "an industrial nation" world, the share of imports from other developing countries has been steadily rising. The three South Asian countries on which this paper focuses are by no means unique in this respect. Todaro (1997) reports that approximately one-third of all developing country imports come from other developing countries. It is also worth noting at this time that the Linder theory was originally intended to apply only to manufactured goods manufactured goods npl → manufacturas fpl; bienes mpl manufacturados
manufactured goods npl → produits manufacturés .
While a large proportion of the exports from developing countries consist of primary products, the majority of imports to developing countries consist of manufactured goods. With regard to the developing economies of Subcontinent sub·con·ti·nent
1. A large landmass, such as India, that is part of a continent but is considered either geographically or politically as an independent entity.
2. , in particular, it is typical for more than three-quarters of these imports to be manufactured [see United Nations (2004)]. In addition, there are now many developing countries that are capable of producing manufactured goods for export. Further evidence of the applicability of the Linder hypothesis to today's developing countries comes from Linnemann and van Beers (1988) who note that "... one might expect at least a tendency towards similarity between a country's export vector of manufactures and its import vector of manufactures--irrespective, in principle, of its level of development".
2.2. Empirical Perspective
The earliest tests of the Linder hypothesis used rank correlation In statistics, rank correlation is the study of relationships between different rankings on the same set of items. It deals with measuring correspondence between two rankings, and assessing the significance of this correspondence. analysis and generally found evidence favourable to the Linder theory [Sailors, et al. (1973) and Greytak and McHugh (1977)]. These studies were heavily criticised, however, for their failure to employ regression analysis In statistics, a mathematical method of modeling the relationships among three or more variables. It is used to predict the value of one variable given the values of the others. For example, a model might estimate sales based on age and gender. , a technique that could have controlled for the effects of distance on trade intensities. Numerous subsequent analyses that made use of the regression technique (and controlled for distance) found no support for the Linder model [see, Hoftyzer (1984); Qureshi, et al. (1980); Kennedy and McHugh (1980, 1983); Linnemann and van Beers (1988), for example]. A few analyses, however, were able to uncover evidence in support of the Linder hypothesis through the use of regression analysis [Fortune (1971); Hirsch and Lev lev-,
pref See levo-. (1973) and Kohlhagen (1977)]. Research on the Linder hypothesis within the recent decade has employed more advanced regression techniques with generally favourable results. After controlling for distance and exchange rate variability, Thursby and Thursby (1987) uncovered evidence in favour of the Linder theory using pooled data for 17 industrialised countries over the 1974-1982 time period. Hanink (1988, 1990) used gravity models to show that the Linder hypothesis is supported in some instances. Grevtak and Tuchinda (1990) found strong support for the Linder hypothesis using interstate in·ter·state
Involving, existing between, or connecting two or more states.
One of a system of highways extending between the major cities of the 48 contiguous United States.
Noun 1. U.S. data. Francois and Kaplan (1996) find some evidence of the Linder effect in their 36-country study of intra-industry trade. However, Chow, et al. (1994), find little indication of a Linder effect among East Asian newly industrialised countries.
There is, however, a serious flaw in many of these early studies of the Linder hypothesis: their exclusion of data from countries that trade zero amounts of goods and services In economics, economic output is divided into physical goods and intangible services. Consumption of goods and services is assumed to produce utility (unless the "good" is a "bad"). It is often used when referring to a Goods and Services Tax. to the country under investigation. From an econometric perspective, such an omission omission n. 1) failure to perform an act agreed to, where there is a duty to an individual or the public to act (including omitting to take care) or is required by law. Such an omission may give rise to a lawsuit in the same way as a negligent or improper act. surely leads to biased results. In particular, if the omitted countries have per capita [Latin, By the heads or polls.] A term used in the Descent and Distribution of the estate of one who dies without a will. It means to share and share alike according to the number of individuals. incomes that are similar to that of the country under investigation, there will be a bias toward accepting the Linder hypothesis. Conversely con·verse 1
intr.v. con·versed, con·vers·ing, con·vers·es
1. To engage in a spoken exchange of thoughts, ideas, or feelings; talk. See Synonyms at speak.
2. , if the omitted countries have per capita incomes that are very different from that of the country under investigation, then there will be a bias toward rejecting the Linder hypothesis. Clearly, the appropriate econometric approach would be to recognise the censored nature of the dependent variable and include data on all potential trading partners, whether or not a non-zero amount of goods and services is actually exchanged. Only Hoftyzer (1984), which focused primarily on industrialised economies, has correctly recognised this requirement in previous research. The estimation methodology employed in Hoftyzer (1984), however, was not the appropriate technique for a censored data set.
3. ECONOMETRIC MODEL AND ESTIMATION METHODOLOGY
As with much of the existing empirical work on the Linder hypothesis, this research employs a regression technique. In order to analyse an·a·lyse
v. Chiefly British
Variant of analyze.
analyse or US -lyze
[-lysing, -lysed] or -lyzing, the effects of trade in both a time-series and cross-section context, as well as to take advantage of available data, a panel data set is used. This data set includes information on the three South Asian countries listed in Table 1 and is characterised by a large number of cross-section units, which are observed at annual intervals over the period from 1993 to 2002. Below is a discussion of the details of the fixed-effects Tobit model which is used to estimate this data.
3.1. The Fixed-effects Tobit Model
There are two basic conditions under which a fixed-effects regression model would be the most appropriate method to estimate a panel data set. The first condition is satisfied if the unobservable factors that differentiate cross-section units are best characterised as parametric shifts of the regression function. This implies that a separate intercept is required for each individual in the sample. Given the nature of the cross-section units under investigation in this analysis, this condition is likely to hold. The second condition is satisfied if a relatively large proportion of the population is represented in the sample. This is most likely true in our analysis since the sample includes information on nearly all potential trading partners of each of the South Asian countries under investigation. It follows, then, that the fixed effects model would be an appropriate model to employ in our investigation of the empirical validity of the Linder hypothesis. The form of this model is given by Equation (I) below:
[Y.sup.*.sub.itj] = [i.sub.j][[alpha].sub.ij] + [X.sub.itj] [[beta].sub.j] + [[epsilon].sub.itj] ... (1)
Where: "j" indexes the three South Asian countries of our analysis (that is, this equation is estimated three times, once for each South Asian country Noun 1. Asian country - any one of the nations occupying the Asian continent
country, land, state - the territory occupied by a nation; "he returned to the land of his birth"; "he visited several European countries" ); "i" indexes cross-section units (potential trading partners of South Asian country "j") such that i = 1, 2,..., N; and, "t" indexes time-series units such that t = 1, 2, 3,..., T. The matrix ij is of dimension (NTxN) and contains a lull set of intercept dummy Sham; make-believe; pretended; imitation. Person who serves in place of another, or who serves until the proper person is named or available to take his place (e.g., dummy corporate directors; dummy owners of real estate). variables representing each potential trading partner of South Asian country "j". The matrix [X.sub.itj] is of dimension (NTxK) and contains observations on the independent variables of the model for South Asian country "j". The parameter vector [[alpha].sub.ij] is of dimension (Nx1) and contains country-specific "individual effects" for South Asian country "j". This "individual effect" captures relevant time-invariant factors and time varying unobservable influences which differentiate the potential trading partners of South Asian country "j". The vector [[beta].sub.j] is of dimension (Kx1) and contains the parameters on the exogenous Exogenous
Describes facts outside the control of the firm. Converse of endogenous. variables for South Asian country "j". The stochastic By guesswork; by chance; using or containing random values.
stochastic - probabilistic disturbances for country "j" are captured by the (NTx1) error vector, [[epsilon].sub.itj].
The variable [y.sup.*.sub.itj] in Equation (I) is a latent variable In statistics, Latent variables (as opposed to observable variables), are variables that are not directly observed but are rather inferred (through a mathematical model) from other variables that are observed and directly measured. , which represents an unobservable measure of desire or ability on the part of potential trading partner "i" to export some non-zero quantity to South Asian country 'j". We assume that country "j" will receive a positive quantity of imports from trading partner "i" if this measure of desire or ability is positive. Similarly, we assume that country "j" will receive zero imports from trading partner "'i" if this measure of desire or ability is zero or negative. As such, we construct the observable left-censored dependent variable, [Y.sup.itj], which will be used in estimation:
[MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII ASCII or American Standard Code for Information Interchange, a set of codes used to represent letters, numbers, a few symbols, and control characters. Originally designed for teletype operations, it has found wide application in computers. ] (2)
This variable will contain a significant number of zero observations as well as many positive observations. Since the model contains this censored dependent variable, it will be necessary to use a fixed-effects Tobit (weighted maximum likelihood) estimation procedure to obtain unbiased, consistent and efficient estimates of the parameter vectors [[alpha].sub.ij] and [[beta].sub.j]. The use of the censored dependent variable in our analysis provides a significant improvement over the existing literature on the empirical validity of the Linder hypothesis. In previous analyses, if country "j" happened to receive zero dollars worth of imports from country "'i'" then data on country "i" was routinely omitted from the sample. This clearly is inappropriate, from an econometric perspective, since such an omission will lead to biased and inconsistent parameter estimates. Furthermore, this type of omission will tend to over estimate the effects of those trading partners who have a positive desire/ability to export to country "j" and, similarly, it will under estimate (or, not measure at all) the effects of those trading partners who have a zero or negative desire/ability to export to country "j". This issue is of particular relevance when assessing the Linder hypothesis in the context of developing economies since these countries typically trade with a relatively small number of partners; the dependent variable in this case would surely include a large number of censored observations.
The failure of previous empirical analyses to find evidence in support of the Linder hypothesis may be due, at least in part, to their failure to properly capture the censored nature of the dependent variable. We next detail the econometric specification of the Linder model, which is used in our analysis.
3.2. Extended Linder Model
While Linder did not specify a formal model of his hypothesis, empirical tests of this theory have typically modelled some measure of trade intensity against the following variables: a measure of the size of each trading partner's economy; a measure of relative prices between a given country and its trading partners; a measure of the difference in per capita incomes between a given country and its trading partners: and, relevant time-invariant factors such as distance. The form of our model follows this specification. The measurement of each of these variables is described below. The dependent variable of our model, which measures trade intensity, is the value of imports received by South Asian country 'j" from trading partner country "i", expressed in terms of thousands of constant dollars. The choice of imports for this variable, rather than exports, is based on the notion that a relatively large proportion of exports from developing countries is comprised of primary products--the very type of goods to which Linder believed his theory would not apply. Imports to developing countries, on the other hand, are primarily comprised of manufactured goods and are, therefore, an appropriate measure to use in testing the validity of the Linder theory. This variable will be referred to as "IMPORTS".
In order to control for differences in the size of each trading partner's economy, our model includes a variable that measures the level of real GDP GDP (guanosine diphosphate): see guanine. in trading-partner country "'i'" (measured in thousands of constant dollars), denoted "'OUTPUT". The coefficient coefficient /co·ef·fi·cient/ (ko?ah-fish´int)
1. an expression of the change or effect produced by variation in certain factors, or of the ratio between two different quantities.
2. on this variable is expected to be positive reflecting the notion that an increase in the level of output in a trading partner's economy would lead to an increase in the quantity of imports received from this trading partner. In order to control for fluctuations in relative prices among trading partners, our model includes the real exchange rate as an independent variable. This variable, which we denote de·note
tr.v. de·not·ed, de·not·ing, de·notes
1. To mark; indicate: a frown that denoted increasing impatience.
2. "EXCHANGE", is constructed as described in Equation (3) below:
[EXCHANGE.sub.it] = [([e.sub.it] x [p.sub.it])/[p.sup.*.sub.it] *] ... (3)
where: [e.sub.it] is the nominal exchange rate Nominal exchange rate
The actual foreign exchange quotation in contrast to the real exchange rate, which has been adjusted for changes in purchasing power. of potential trading partner "i" at time "t" (measured in units of South Asian country currency per unit of potential trading partner "i'" currency); [p.sub.it], is the GDP deflator GDP deflator
A price index used to adjust gross domestic product for changes in prices of goods and services included in the GDP. The GDP deflator is a more broadly based and, many economists argue, a better measure of inflation than the consumer price index in potential trading partner "'i" at time "'t": and, [p.sup.*.sub.it] is the GDP deflator of the given South Asian country at time "'t'. Since an increase in this variable should decrease the level of imports, the coefficient on this variable should be negative.
The Linder effect is captured through a variable which measures the degree of similarity between the per capita income levels of the given South Asian country and each trading partner. This variable, which we denote as "'LINDER", is the absolute value of the difference in the levels of real per capita GDP in the South Asian country and potential trading partner "i" (measured in thousands of constant dollars). Support for the Linder hypothesis would follow from the finding of a negative and statistically significant coefficient on this variable. Finally, we note that the effect of distance and other relevant time-invariant factors will be incorporated into the model through the individual effects, a [[alpha].sub.ij], in Equation ( 1 ). This term captures differences in cross-section units (potential trading partners of South Asian country "j") which are constant over time.
Re-writing the model expressed in Equation (I) for a given South Asian country and expressing the matrix of exogenous regressors in terms of the specific variables defined above produces the equation to be estimated in our analysis:
[IMPORTS.sub.it] = [[alpha].sub.1] + [[alpha].sub.2] + [[alpha].sub.3] + ... + [[alpha].sub.n] + [[beta].sub.1][OUTPUT.sub.it] + [[beta].sub.2] [EXCHANGE.sub.it] + [[beta].sub.3] [LINDER.sub.it] + [[epsilon].sub.it] ... (4)
In this representation, the "[alpha]" terms represent the different country-specific individual effects for each trading partner of the given South Asian country. The finding of a negative and statistically significant estimate for [[beta].sub.3] in this model would provide evidence in favour of the Linder hypothesis.
4. EMPIRICAL RESULTS
Initial empirical results were obtained by applying the maximum-likelihood fixed-effects Tobit estimation procedure to Equation (4) above. This equation was estimated three times, once for each South Asian country under investigation. In addition, since it is well known that Tobit models very often suffer from heteroskedasticity, especially when a large proportion of the observations on the dependent variable are censored (as is the case in this analysis), we computed likelihood ratio tests to test for the presence of multiplicative heteroskedasticity.
Testing for this error violation is especially important since the presence of heteroskedasticity not only leads to inconsistent maximum likelihood estimates but also to unreliable inferences from hypothesis tests. When the null hypothesis null hypothesis,
n theoretical assumption that a given therapy will have results not statistically different from another treatment.
n of homoskedasticity was rejected, a correction for heteroskedasticity was applied to the model. The results of estimation are displayed in Table 2.
The results in Table 2 provide strong evidence in support of the Linder hypothesis for two of the three countries under investigation. In two of the three cases (India and Bangladesh), the Linder hypothesis is supported at the 99 percent level of confidence. In one case (Pakistan), evidence exists at the 95 percent level. Each of these two countries, therefore, is more likely to trade with countries that have per capita income levels that are similar to their own, other things equal. This is as predicted by Linder. Furthermore, these results indicate that the size of a trading partner's economy has a significant impact on imports (at the 95 percent level of confidence or better) in all two of these countries. For two of these countries (India and Pakistan) the coefficient on this variable is positive, as expected. Interestingly, in the case of Bangladesh the coefficient on this variable is negative. This indicates that this country import less from countries whose economies are large, other factors equal. In addition, the results in Table 2 indicate that, after controlling for other factors, the real exchange rate does not appear to be a significant factor affecting trade intensity for any of the three countries analysed here. For each of the three countries under investigation here, much of the variation in imports seems to be the result of country-specific individual effects. These country-specific factors most likely include variables such as proximity, common linguistic or religious heritage, and colonial affiliation. For the most part, the countries with significant individual effects are consistent with a priori a priori
In epistemology, knowledge that is independent of all particular experiences, as opposed to a posteriori (or empirical) knowledge, which derives from experience. expectations. In particular, the individual effects on certain types of trading partners are, for the most part, consistently statistically significant. The individual effects tend to be significant and positive for those trading-partner countries that are industrialised nations, oil-exporting economies, neighbouring countries, or countries that share common religious heritage or colonial ties. This means that alter controlling for factors such as the size of a trading partner's economy, per capita income differences and real exchange rates, the given South Asian country tends to import more from the other countries as a result of country-specific time-invariant factors. Our attention turns now to the question of whether or not the results of this analysis would have been different if the censored nature of the dependent variable had been ignored, as has been the case in previous research. If there is no difference then, presumably pre·sum·a·ble
That can be presumed or taken for granted; reasonable as a supposition: presumable causes of the disaster. , our analysis would have little to offer regarding the Linder theory beyond what has previously been presented in the literature. To examine this question, Equation (4) has been re-estimated as a simple fixed-effects model, excluding from the sample those observations that are censored, as would have been the case in earlier studies. The results of this estimation, which are contained in Table 3, present a striking contrast to those in Table 2. When the censored observations are excluded from the sample, the results for all three countries provide no support for the Linder hypothesis; the Linder variable is insignificant at all reasonable levels of confidence. Clearly, the exclusion of the censored observations from the sample has a significant impact on the inferences which may be drawn from that data.
Economists who are interested in studying and describing the development process must attempt to understand the factors that drive trade from the perspective of the developing countries. This research has provided some insight into this phenomenon by uncovering empirical support for the Linder hypothesis for three developing South Asian countries: Bangladesh, India and Pakistan. In particular, this research indicates that these countries trade more intensively with economies that have per capita income levels similar to their own. The results of this analysis provide strong evidence of the importance of modelling the Linder relationship within the appropriate context. Considerable suspicion must be cast on those empirical analyses of the Linder hypothesis in which the censored observations on trade intensity have been excluded. It is well known that such exclusion can result in biased and inconsistent parameter estimates. The evidence presented here has shown that this could also result in misleading conclusions regarding the empirical validity of the Linder theory. While this research does not conclusively con·clu·sive
Serving to put an end to doubt, question, or uncertainty; decisive. See Synonyms at decisive.
con·clusive·ly adv. demonstrate the applicability of the Linder hypothesis to the entire developing world, it does present some intriguing in·trigue
a. A secret or underhand scheme; a plot.
b. The practice of or involvement in such schemes.
2. A clandestine love affair.
v. evidence on the possible validity of this theory in this setting. To date, the literature has not seriously tested this theory from the viewpoint of a developing country. A more complete treatment of this issue certainly would involve applying this estimation technique to a larger number of developing countries. However, should these results generalise v. 1. same as generalize.
Verb 1. generalise - speak or write in generalities
mouth, speak, talk, verbalise, verbalize, utter - express in speech; "She talks a lot of nonsense"; "This depressed patient does not verbalize" to other developing countries; the implication is that the conventional factor-proportions view of trade is inadequate to explain trade in developing economies.
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Syed Adnan Haider All Shah Bukhari is Senior Research Fellow at the Faculty of Computer Science and IT, Federal Urdu University The Federal Urdu University of Arts, Sciences & Technology is a coeducational public university located in Gulshan Town, Karachi, Sindh, Pakistan.
Federal Urdu University was established on 12 November, 2002 by presidential order, the university is the first university in of Arts, Science, and Technology, Karachi. Mohsin Hassnain Ahmad is Assistant Professor/Research Economist, Applied Economics Research Centre Applied Economics Research Centre (AERC) is a distinguished research institute of University of Karachi. It was established in 1973 by government of Sindh and financially assisted by Ford Foundation. Prof. Dr. , University of Karachi History
It was chartered by the Majlis ash-Shura in September 1950 via an Act of Parliament. The university was established in June 1951, the fourth oldest university in Pakistan and the first in Karachi. , Karachi. Shaista Alam is Research Economist, Applied Economics Research Centre, University of Karachi, Karachi. Syeda Sonia Haider Ali Haider Ali is considered on the best boxers in the history of Pakistan boxing. His explosive speed and resourcefulness has made him a constant threat to opposing boxers.
He started Boxing at an early age and became the National Champion in 1998. Shah Bukhari is Research Economist, Centre of Economics and Social Sciences Research, Government College University, Faisalabad. Muhammad Sabihuddin Butt is Associate Professor/Senior Research Economist, Applied Economics Research Centre, University of Karachi, Karachi.
Table 1 Average Percent of Imports Originating from Developing Countries Percent of Total Countries Time Period Imports Bangladesh 1993-2002 18.43 India 1993-2002 15.45 Pakistan 1993-2002 20.01 Source: Statistical yearbook for Asia and the Pacific 2003. Table 2 Fired-effects Tobit Estimates Exchange Linder Countries Output Rate Variable N Time Period Bangladesh -0.199 ** -0.053 -3.088 ** 552 1993-2002 (0.065) (0.113) (0.844) India 0.105 * -0.067 -2.759 ** 552 1993-2002 (0.053) (0.229) (0.890) Pakistan 0.032 * 0.004 -0.506 * 552 1993-2002 (0.016) (3.159) (0.234) Note: Estimated standard errors appear in parentheses. * Indicates statistical significance at the 95 percent level of confidence; ** Indicate significance at 99 percent level. Table 3 Fired-effects Tobit Estimates Exchange Linder Time Countries Output Rate Variable N Period Bangladesh -0.222 ** -0.005 -11.918 172 1993-2002 (0.079) (0.012) (8.219) India -0.489 -0.004 0.581 169 1993-2002 (0.069) (0.027) (4.79) Pakistan 0.036 * -1.979 -0.155 152 1993-2002 (0.018) (1.066) (1.520) Note: Estimated standard errors appear in parentheses. * Indicates statistical significance at the 95 percent level of confidence; ** Indicate significance at 99 percent level.