Abstract
This paper analyses the role that quality standards and innovation play on trade volume, by using a gravity model. The role of innovative activity and quality standards in enhancing trade performance is widely accepted in the literature. However, in this paper, we argue that the net effect of quality standards on trade is affected by the exporter’s ability to innovate and comply with these requirements. In particular, by using a sample of 60 exporting countries and 57 importing countries, for a wide range of 26 manufacturing industries over the period 1995–2000, we show that the most innovative industries are more likely to enhance the overall quality of exports, and then gain a competitive advantage. We also find that this effect depends on the level of technology intensity at industry-level and on the level of economic development of exporting country.
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The theoretical literature emphasizes innovation’s ability in creating new products or expanding the range of products that countries could produce and export (Grossman and Helpman 1989). Studies focusing on heterogeneous firms’ innovation data to explain their export activities find that in addition to a direct effect of innovation on exports, product innovation, through its effect on firm productivity, increases the likelihood of the firm entering the export market. (Bernard and Jensen 2004; Bleaney and Wakelin 2002; Cassiman and Golovko 2011; Becker and Egger 2013). Recently Chen (2013) finds that the extensive margin plays a more important role in science-based sectors, such as chemical and electronic equipment, and the estimates illustrate the impact of innovation on exports is decreasing with countries income levels.
With regard to the destination markets, several studies find that standards limit market access, particularly for developing countries (DCs) and Least Developed Countries (LDCs) towards developed countries, and their impact can be more restrictive than tariffs.
Perinorm is a database containing information on the standards published by the main national and international standards authorities.
Three different proxies for NTMs are used. The first indicator of NTMs is a dummy variable equal to one if the importing country notifies at least one barrier at the HS6 digit level; the second indicator is a frequency index, and finally a third dial is an ad-valorem equivalent.
On a partially related ground, many studies find that the negative impact of sanitary and phytosanitary measures (SPS) and technical barriers to trade are stronger when exports to the EU market are considered. Other studies show how stringency measures, such as the MRLs of pesticides and contaminants, negatively affect bilateral trade flows (Otsuki et al. 2001; Xiong and Beghin 2012; Disdier and Marette 2010). While others point out that similar regulations between trading partners may promote bilateral trade flows (Drogué and Demaria 2012; Vigani et al. 2011).
Since the bilateral trade flows are collected from multiple countries, heteroskedasticity may be a challenge especially in the common practice of logarithmic transformation. As Santos Silva and Tenreyro (2006) showed, if the true gravity equation is in its multiplicative form and heteroskedasticity is present, estimates from the log-linearized gravity equation can be biased. This specification of the gravity model solves three kind of problems. Indeed, thanks to its multiplicative form, the PPML specification provides a natural way to deal with zero trade flows. In addition, the estimations of the gravity model by PPML are consistent in the presence of heterosckedasticity and are reasonably efficient, especially in large samples. Finally, the objective function is log-linear instead of log-log. This imply that the dependent variable do not have to be transformed logarithmically.
One solution to this problem would be to instrument innovation, but unfortunately finding credible instruments at disaggregated level is not feasible.
Note that all countries do not produce all available goods, nor do they all have an effective demand for all available goods. Accordingly, the final dataset excludes products that are never traded.
As a matter of fact, data on NTMs can also be obtained from United Nation’s Conference on Trade and Development (UNCTAD), from World Trade Organization (WTO) and from the Trade Analysis and Information System (TRAINS) database.
As the literature suggests, international standards are less restrictive than domestic or regional ones. However, standards differ depending on products type with respect to the quality, safety as well as production and packaging. Even if the frequency index does not include the severity or the stringency of a specific measure, it allows us to know information about the number of product categories subject to NTMs. In this context, we make the assumption that the higher the number of requirements the higher the quality of products. This is because if the regulation is large then standards are promoting important public policy objectives, such us consumer safety and protection of the domestic market.
Data are available at http://www.nber.org/patents/. Broadly speaking, the dataset comprises detailed information on almost 3 million US patents granted between January 1963 and December 1999, all citations made to these patents between 1975 and 1999 (over 16 million), and a reasonably broad match of patents to Compustat (the data set of all firms traded in the US stock market) (Hall et al. 2001).
Since the original data on patents are classified according to the US Patent Classification, we combined them with other information adopting the correspondence scheme between the US Patent Classification and the International Patent Classification and between the latter and the ISIC Rev. 3 provided by Johnson (2002). Finally, concordances between ISIC Rev. 3 and ISIC Rev. 2 are applied.
Since in our sample the 25 % of the distribution of quality standards includes values equal to zero, we re-estimate our model on the sample of positive quality measures and the results, available on request, remain unchanged.
Both innovation and quality standards can be endogenous since exports can affect the incentive to apply for patents (Chen 2013) and bring about high number of standards. To deal with the causality problems of both quality and innovation, we estimate our model by using the GMM-system estimator. The equation is estimated using, as GMM-type instruments, lagged values of the dependent variable (X), of Y, E, dated t-2 and earlier and lags t-3 and earlier of Patent, Standard and Patent*Standard. As IV-type instruments, we adopt the lagged level of Tariff and country, time and industry dummies. Even though we obtain a negative coefficient of the interaction term, the total impacts of both Patent and Standard are positive. Results are reported in the Appendix Table 5. The Hansen test of overidentifying restrictions reveals that lagged patent counts and lagged quality standards are not exogenous instruments to current export flow. This could explain the negative sign of the interaction term.
A further investigation analyses differences in trade between countries according to the different levels of income. Looking at trade between middle-income countries, we find that the innovation has not an effect on trade and the quality standards act as compliance costs. When the trade is between similar countries any additional requirements on quality is a barrier to trade. Completely different is the scenario when we look at trade between middle-income and high-income countries. In this case the quality standards have a positive impact and they work as a quality/innovation incentive. Products from middle-income countries reach markets of developed economies in which consumers demand higher quality products. These results are available on request.
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Acknowledgments
We would like to thank Giovanni Anania, Alberto Franco Pozzolo and Luca Salvatici for helpful comments on an earlier draft of the article. This article has been co-funded by the Region Calabria (Programma Operativo Regione Calabria FSE 2007/2013) and by INRA UMR MOISA (Institut national de la recherche agronomique - Unité Mixte de Recherche - Marchés, Organisations, Institutions et Stratégies d’Acteurs). The views expressed in this article are the sole responsibility of the authors and do not necessarily reflect those of the INRA UMR MOISA or the Region Calabria.
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Appendix
Appendix
Table 5 presents descriptive statistics of our variables of interest. They are calculated on the whole sample, after excluding influential observations, i.e. observations with a value of trade higher that the 95th percentile of the world distribution. Concerning the dependent variable, i.e. exports, it shows an average value of more than 35 million dollars and a high variability, with values ranging between 0 and 526 million dollars. Total production reflects the economic development of exporter countries, with minimum value of 638,000 dollars for Panama (in 1996), and the maximum value of more than 639 billion dollars for USA (in 1999). Moreover, consumption show minimum values of 1163 thousand dollars for Cameroon (in 1997) and the highest value of 698 billion dollars for USA (in 1999).
Among bilateral characteristics, Distance shows an average of more than 7 thousand kilometres, with values ranging between 80 and more than 19 thousand kilometres. Tariffs show a high variability, with values ranging between 0 and 268 % and an average level of about 5 %.
Moreover, the number of patents, which reflects the technological development, is also highly variable in our sample, with values ranging between 0 (for manufacture of fabricated metal products in China) and 924 (for manufacture of food, beverages and tobacco in USA) and an average equal to 4. The frequency index of restrictions on quality ranges between 0 and 1 and shows and average value of 0.11.
Table 6 reports simple correlations among the variables used in the empirical model. As expected, exports are positively correlated with production, consumption common language and innovation. Negative correlations are reported between exports distance, tariff barriers, and, surprisingly, quality standards. Moreover, a positive and significant correlation (0.24) is reported between tariff and non-tariff measures. Even though summary statistics and bilateral correlations are suggestive, they do not control for potentially confounding factors. For this reason, in what follows we perform a more refined econometric analysis.
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Cipollina, M., Demaria, F. & Pietrovito, F. Determinants of Trade: the Role of Innovation in Presence of Quality Standards. J Ind Compet Trade 16, 455–475 (2016). https://doi.org/10.1007/s10842-016-0234-z
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DOI: https://doi.org/10.1007/s10842-016-0234-z