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Science 27 July 2007:
Vol. 317. no. 5837, pp. 482 - 487
DOI: 10.1126/science.1144581

Research Articles

The Product Space Conditions the Development of Nations

C. A. Hidalgo,1*{dagger} B. Klinger,2* A.-L. Barabási,1 R. Hausmann2

Economies grow by upgrading the products they produce and export. The technology, capital, institutions, and skills needed to make newer products are more easily adapted from some products than from others. Here, we study this network of relatedness between products, or "product space," finding that more-sophisticated products are located in a densely connected core whereas less-sophisticated products occupy a less-connected periphery. Empirically, countries move through the product space by developing goods close to those they currently produce. Most countries can reach the core only by traversing empirically infrequent distances, which may help explain why poor countries have trouble developing more competitive exports and fail to converge to the income levels of rich countries.

1 Center for Complex Network Research and Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA.
2 Center for International Development, Kennedy School of Government, Harvard University, Cambridge, MA 02139, USA.

* These authors contributed equally to this work.

{dagger} To whom correspondence should be addressed. E-mail: chidalgo{at}nd.edu

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E-Letters:

Read all E-Letters

Network Modeling of Product Space and Transformations
Jiming Liu
Science Online, 13 Nov 2007 [Full text]
Access to Product Space and Transformations Study Data
Cesar A. Hidalgo
Science Online, 30 Apr 2008 [Full text]



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