Revisiting the causal effects of exporting on productivity: Does price heterogeneity matter?

Wassie, Tewodros Ayenew (2017): Revisiting the causal effects of exporting on productivity: Does price heterogeneity matter?

Abstract

This paper examines the causal effect of exporting on firms' productivity controlling for price heterogeneity. In most empirical studies that establish the export-productivity relationships, output is measured in values rather than in quantities. This makes it difficult to distinguish between productivity and within-firm changes in price that may occur following exposure to international markets. Using a detail data on quantity and prices from Ethiopian manufacturing firms in the period 1996-2005, this paper distinguishes efficiency from revenue based productivity and examines what this means for the estimated relationship between exporting and productivity. The empirical strategy implemented in the paper allows for potential endogeneity for exporting and controls for self-selection into export. The main results show that exporters are more productive than non-exporters in terms of revenue based productivity and this is explained by both self-selection and learning effects. However, when correcting for price heterogeneity using quantity-based measures of productivity, exporters appear to be similar to non-exporters either before or after export entry. Overall, the results suggest that the observed relationship between exporting and productivity mainly occurs through price mechanism.

• Item Type: MPRA Paper
• Language: English
• Keywords: Export; revenue productivity; physical productivity; price heterogeneity; fixed effect quantile regression
• Subjects: D - Microeconomics > D1 - Household Behavior and Family Economics > D12 - Consumer Economics: Empirical Analysis; F - International Economics > F1 - Trade > F14 - Empirical Studies of Trade; O - Economic Development, Innovation, Technological Change, and Growth > O5 - Economywide Country Studies > O55 - Africa

References

Arellano, M. and Bond, S. (1991). Some tests of specification for panel data: Monte carlo evidence and an application to employment equations, The review of economic studies 58(2): 277–297.

Atalay, E. (2014). Materials prices and productivity, Journal of the European Economic Association 12(3): 575–611.

Aw, B. Y., Chung, S. and Roberts, M. J. (2000). Productivity and turnover in the export market: micro-level evidence from the republic of korea and taiwan (china), The World Bank Economic Review 14(1): 65–90.

Bernard, A. B., Eaton, J., Jensen, J. B. and Kortum, S. (2003). Plants and productivity in international trade, The American Economic Review 93(4): 1268–1290.

Bernard, A. B. and Jensen, J. B. (1999). Exceptional exporter performance: cause, effect, or both?, Journal of international economics 47(1): 1–25.

Bigsten, A., Collier, P., Dercon, S., Fafchamps, M., Gauthier, B., Willem Gunning, J., Oduro, A., Oostendorp, R., Pattillo, C., Soderbom, M. et al. (2004). Do African manufacturing firms learn from exporting?,Journal of development studies 40(3): 115–141.

Bigsten, A. and Gebreeyesus, M. (2009). Firm productivity and exports: Evidence from ethiopian manufacturing, The Journal of Development Studies 45(10): 1594–1614.

Blundell, R. and Bond, S. (1998). Initial conditions and moment restrictions in dynamic panel data models, Journal of econometrics 87(1): 115–143.

Canay, I. A. (2011). A simple approach to quantile regression for panel data, The Econometrics Journal 14(3): 368–386.

Clerides, S. K., Lach, S. and Tybout, J. R. (1998). Is learning by exporting important? micro-dynamic evidence from Colombia, Mexico, and morocco, The quarterly journal of economics 113(3): 903–947.

De Loecker, J. (2011). Product differentiation, multi product firms, and estimating the impact of trade liberalization on productivity, Econometrica 79(5): 1407–1451.

De Loecker, J. and Goldberg, P. K. (2014). Firm performance in a global market, Annual Review of Economics 6(1): 201–227.

De Loecker, J., Goldberg, P. K., Khandelwal, A. K. and Pavcnik, N. (2016). Prices, markups, and trade reform, Econometrica 84(2): 445–510.

De Loecker, J. and Warzynski, F. (2012). Markups and firm level export status, The American Economic Review 102(6): 2437–2471.

Espanol, P. (2007). Exports, sunk costs and financial restrictions in argentina during the 1990s.

Foster, L., Haltiwanger, J. and Syverson, C. (2008). Reallocation, firm turnover, and efficiency: Selection on productivity or profitability?, The American Economic Review 98(1): 394–425.

Gervais, A. (2015). Product quality and firm heterogeneity in international trade, Canadian Journal of Economics/Revue canadienne d’´economique 48(3): 1152–1174.

Girma, S., Greenaway, A. and Kneller, R. (2004). Does exporting increase productivity? a microeconometric analysis of matched firms, Review of International Economics 12(5): 855–866.

Harper, M. J. (1999). Estimating capital inputs for productivity measurement: An overview of us concepts and methods, International Statistical Review 67(3): 327–337.

Iacovone, L. and Javorcik, B. (2012). Getting ready: Preparation for exporting.

ISGEP (2008). Understanding cross-country differences in exporter premia: Comparable evidence for 14 countries, Review of world economics 144(4): 596–635.

Klette, T. J., Griliches, Z. et al. (1996). The inconsistency of common scale estimators when output prices are unobserved and endogenous, Journal of Applied Econometrics 11(4): 343–361.

Kugler, M. and Verhoogen, E. (2012). Prices, plant size, and product quality, The Review of Economic Studies 79(1): 307–339.

Leuven, E., Sianesi, B. et al. (2015). Psmatch2: Stata module to perform full mahalanobis and propensity score matching, common support graphing, and covariate imbalance testing, Statistical Software Components.

Levinsohn, J. and Melitz, M. (2002). Productivity in a differentiated products market equilibrium, Unpublished manuscript 9: 12–25.

Lopez, R. (2004). Self-selection into the export markets: A conscious decision? indiana university paper.

Martins, P. S. and Yang, Y. (2009). The impact of exporting on firm productivity: a meta-analysis of the learning-by exporting hypothesis, Review of World Economics 145(3): 431–445.

Melitz, M. J. (2003). The impact of trade on intra-industry reallocations and aggregate industry productivity, Econometrica 71(6): 1695–1725.

MOFED, E. (2006). Ethiopia: Building on progress a plan for accelerated and sustained development to end poverty (pasdep).

Ornaghi, C. (2008). Price deflators and the estimation of the production function, Economics Letters 99(1): 168–171.

Powell, D. and Wagner, J. (2014). The exporter productivity premium along the productivity distribution: evidence from quantile regression with nonadditive firm fixed effects, Review of World Economics 150(4): 763–785.

Roodman, D. (2003). XTABOND2: Stata module to extend xtabond dynamic panel data estimator, Statistical Software Components, Boston College Department of Economics.

Siba, E. and Gebreeyesus, M. (2017). Learning to export and learning from exporting: The case of Ethiopian manufacturing, Journal of African Economies 26(1): 1–23.

Siba, E. and Soderbom, M. (2011). The performance of new firms: Evidence from ethiopians manufacturing sector, Technical report, Mimeo: University of Gothenburg.

Smeets, V. and Warzynski, F. (2013). Estimating productivity with multi-product firms, pricing heterogeneity and the role of international trade, Journal of International Economics 90(2): 237–244.

Van Biesebroeck, J. (2005). Exporting raises productivity in sub-saharan african manufacturing firms, Journal of International economics 67(2): 373–391.

Van Biesebroeck, J. (2007). Robustness of productivity estimates, The Journal of Industrial Economics 55(3): 529–569.

Wagner, J. (2007). Exports and productivity: A survey of the evidence from firm-level data, The World Economy 30(1): 60–82.

Wagner, J. (2012). International trade and firm performance: a survey of empirical studies since 2006, Review of World Economics 148(2): 235–267.

Windmeijer, F. (2005). A finite sample correction for the variance of linear efficient two-step gmm estimators, Journal of Econometrics .