TY - JOUR AU - Clerides,Sofronis AU - Lach,Saul AU - Tybout,James TI - Is "Learning-by-Exporting" Important? Micro-Dynamic Evidence from Colombia, Mexico and Morocco JF - National Bureau of Economic Research Working Paper Series VL - No. 5715 PY - 1996 Y2 - August 1996 UR - http://www.nber.org/papers/w5715 L1 - http://www.nber.org/papers/w5715.pdf N1 - Author contact info: Sofronis Clerides E-Mail: s.clerides@ucy.ac.cy Saul Lach Department of Economics Hebrew University Jerusalem, 91905 ISRAEL Tel: 972-2-5883253 Fax: 972-2-5816071 E-Mail: saul.lach@huji.ac.il James R. Tybout Department of Economics Penn State University 517 Kern Graduate Building University Park, PA 16802 Tel: 814/865-4259 Fax: 814/863-4775 E-Mail: jtybout@psu.edu AB - Is there any empirical evidence that firms become more efficient after becoming exporters? Do firms that become exporters generate positive spillovers for domestically-oriented producers? In this paper we analyze the causal links between exporting and productivity using firm-level panel data from three semi-industrialized countries. Representing export market" participation and production costs as jointly dependent autoregressive processes, we look for evidence that firms' stochastic cost processes shift when they break into foreign markets. We find that relatively efficient firms become exporters, but firms' unit costs are not affected by previous export market participation. So the well-known efficiency gap between exporters and non-exporters is due to self-selection of the more efficient firms into the export market, rather than learning by exporting. Further, we find some evidence that exporters reduce the costs of breaking into foreign markets for domestically oriented producers, but they do not appear to help these producers become more efficient. ER -