Mercedes Delgado

Temple University and ISC
Fox School of Business
Alter Hall 542
1801 Liacouras Walk
Philadelphia, PA 19122
Tel: 215-204-3052
Fax: 215-204-8029

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org
Institutional Affiliation: Massachusetts Institute of Technology

NBER Working Papers and Publications

January 2020The Servicification of the US Economy: The Role of Startups versus Incumbent Firms
with J. Daniel Kim, Karen Mills
in The Role of Innovation and Entrepreneurship in Economic Growth, Aaron Chatterji, Josh Lerner, Scott Stern, and Michael J. Andrews, editors
Over the last few decades, the U.S. economy has exhibited a significant shift from manufacturing towards services. This transition has been particularly prominent in an important subcategory of services industries that drives innovation and employs many high-wage workers: Supply Chain Traded Services (Delgado and Mills, 2020). These industries provide specialized service inputs to organizations and are characterized by high upstreamness, which allow innovations to cascade down to other buyer industries. In this chapter, we explore the role of startups versus incumbent firms in driving the transition from manufacturing to Supply Chain Traded Services between 1998 and 2015. Using the Longitudinal Business Database of the U.S. Census Bureau, we find that startups experienced a large decline i...
August 2014Defining Clusters of Related Industries
with Michael E. Porter, Scott Stern: w20375
Clusters are geographic concentrations of industries related by knowledge, skills, inputs, demand, and/or other linkages. A growing body of empirical literature has shown the positive impact of clusters on regional and industry performance, including job creation, patenting, and new business formation. There is an increasing need for cluster-based data to support research, facilitate comparisons of clusters across regions, and support policymakers and practitioners in defining regional strategies. This paper develops a novel clustering algorithm that systematically generates and assesses sets of cluster definitions (i.e., groups of closely related industries). We implement the algorithm using 2009 data for U.S. industries (6-digit NAICS), and propose a new set of benchmark cluster definiti...

Published: Mercedes Delgado & Michael E. Porter & Scott Stern, 2016. "Defining clusters of related industries," Journal of Economic Geography, vol 16(1), pages 1-38. citation courtesy of

July 2012Clusters, Convergence, and Economic Performance
with Michael E. Porter, Scott Stern: w18250
This paper evaluates the role of regional cluster composition in the economic performance of industries, clusters and regions. On the one hand, diminishing returns to specialization in a location can result in a convergence effect: the growth rate of an industry within a region may be declining in the level of activity of that industry. At the same time, positive spillovers across complementary economic activities provide an impetus for agglomeration: the growth rate of an industry within a region may be increasing in the size and "strength" (i.e., relative presence) of related economic sectors. Building on Porter (1998, 2003), we develop a systematic empirical framework to identify the role of regional clusters - groups of closely related and complementary industries operating within ...

Published: “Clusters, Convergence, and Economic Performance,” with Michael E. Porter and Scott Stern, 2014, Research Policy, 43 (10), pp. 1785–1799 (also available as NBER WP 18250). citation courtesy of

The Determinants of National Competitiveness
with Christian Ketels, Michael E. Porter, Scott Stern: w18249
We define foundational competitiveness as the expected level of output per working-age individual that is supported by the overall quality of a country as a place to do business. The focus on output per potential worker, a broader measure of national productivity than output per current worker, reflects the dual role of workforce participation and output per worker in determining a nation's standard of living. Our framework highlights three broad and interrelated drivers of foundational competitiveness: social infrastructure and political institutions, monetary and fiscal policy, and the microeconomic environment. We estimate this framework using multiple data sets covering more than 130 countries over the 2001-2008 period. We find a positive and separate influence of each driver on o...
NBER Videos

National Bureau of Economic Research, 1050 Massachusetts Ave., Cambridge, MA 02138; 617-868-3900; email:

Contact Us