We develop a simple model of international trade with heterogeneous firms that is consistent with a number of stylized features of the data. In particular, the model predicts positive as well as zero trade flows across pairs of countries, and it allows the number of exporting firms to vary across destination countries. As a result, the impact of trade frictions on trade flows can be decomposed into the intensive and extensive margins, where the former refers to the trade volume per exporter and the latter refers to the number of exporters. This model yields a generalized gravity equation that accounts for the self-selection of firms into export markets and their impact on trade volumes. We then develop a two-stage estimation procedure that uses a selection equation into trade partners in the first stage and a trade flow equation in the second. We implement this procedure parametrically, semi-parametrically, and non-parametrically, showing that in all three cases the estimated effects of trade frictions are similar. Importantly, our method provides estimates of the intensive and extensive margins of trade. We show that traditional estimates are biased, and that most of the bias is not due to selection but rather due to the omission of the extensive margin. Moreover, the effect of the number of exporting firms varies across country pairs according to their characteristics. This variation is large, and particularly so for trade between developed and less developed countries and between pairs of less developed countries.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. In case of further problems read
the IDEAS help
page. Note that these files are not on the IDEAS
site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Publisher Info
Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
12927.
Length: Date of creation: Feb 2007 Date of revision: Handle: RePEc:nbr:nberwo:12927
Note: ITI Contact details of provider: Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A. Phone: 617-868-3900 Email: Web page: http://www.nber.org More information through EDIRC
For technical questions regarding this item, or to correct its listing, contact: ().
Find related papers by JEL classification: F10 - International Economics - - Trade - - - General F12 - International Economics - - Trade - - - Models of Trade with Imperfect Competition and Scale Economies F14 - International Economics - - Trade - - - Country and Industry Studies of Trade
This paper has been announced in the following NEP Reports:
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
James E. Anderson & Eric van Wincoop, 2004.
"Trade Costs,"
NBER Working Papers
10480, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
James E. Anderson & Eric van Wincoop, 2004.
"Trade Costs,"
Journal of Economic Literature,
American Economic Association, vol. 42(3), pages 691-751, September.
[Downloadable!] (restricted)
Simeon Djankov & Rafael La Porta & Florencio Lopez-De-Silanes & Andrei Shleifer, 2002.
"The Regulation Of Entry,"
The Quarterly Journal of Economics,
MIT Press, vol. 117(1), pages 1-37, February.
[Downloadable!] (restricted)
Other versions:
Simeon Djankov & Rafael La Porta & Florencio LopezdeSilanes & Andrei Shleifer, 2000.
"The Regulation of Entry,"
NBER Working Papers
7892, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
Djankov, Simeon & La Porta, Rafael & Lopez-de-Silanes, Florencio & Shleifer, Andrei, 2001.
"The Regulation of Entry,"
Working Paper Series
rwp01-015, Harvard University, John F. Kennedy School of Government.
[Downloadable!]
Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.) This item has more than 25 citations. To prevent cluttering this page, these citations are listed on a separate page.