Tag Archives: innovation

The shape and structure of entrepreneurial and innovative places

Geoffrey Borchhardt and Olav Sorenson

Interactions primarily occur between those living and working in close proximity to one another. This essay explores some consequences of that fact for places. It offers three principle propositions: (1) Compact buildings, neighborhoods, and cities, and denser places, should promote higher rates of entrepreneurship, innovation, and economic growth because they reduce the costs of interaction. (2) More integrated places should also promote entrepreneurship and innovation because the average person in those places interacts with a more diverse set of others. (3) In more segregated and unevenly distributed places, people diverge more, as a function of where within the place they live and work, in their propensities to innovate and to found firms.

Published in Entrepreneurial Ecosystems in Cities & Regions

Preprint available

Innovation policy in a networked world

Olav Sorenson

Social relationships channel information, influence, and access to scarce resources. As a consequence, social networks—-the patterns of these relationships across the members of a community—-influence who comes up with important innovations, whether and how rapidly those innovations get adopted, and who has the ability to commercialize them. They therefore also affect the overall rate at which innovation occurs in the economy. This paper provides an introduction to and review of the research on social networks most relevant to innovation, with a particular focus on the earliest stages of the innovation process. It then discusses the likely consequences of a variety of policy interventions that could either reduce the importance of social relationships to innovation or alter the patterns of relationships in ways that might promote innovation.

Innovation Policy and the Economy, 18 (2018): 53-77

NBER Working Paper Preprint

Expand innovation finance via crowdfunding

Olav Sorenson, Valentina Assenova, Guan-Cheng Li, Jason Boada, and Lee Fleming

Using data on Kickstarter campaigns and venture capital investments from 2009–2015, we explored whether crowdfunding expanded access to financial capital, in the sense of supporting innovation in more geographically diverse regions than venture capital. Over this period, crowdfunding has supported projects in many regions that have attracted little or no venture capital. Within regions, moreover, the evidence suggests that successful crowdfunding campaigns attract future venture capital investments and that they have been doing so at an increasing rate. Crowdfunding therefore appears to be expanding access to capital to a larger pool of innovators.

Science, 354 (2016): 1526-1528 (OPEN ACCESS)

Supplemental Materials

Replication data and analysis files

Crowding, satiation and saturation: The days of television series’ lives

Alicia Barroso, Marco Giarratana, Samira Reis, and Olav Sorenson

The performance of firms depends not just on the structure of the industries in which they compete but also on their relative positioning within those industries, in terms of operating within particular niches. We propose that demand for these niches depends endogenously on the historical ecology of the products offered: Niches become saturated – reduced in their ability to support products – as a large number of previous offerings allows the audience to satisfy its desire for products of a particular type. Analyzing the survival rates of television series aired in the United States from 1946 to 2003, we found that the survival rates of future entrants fell with the extensiveness of recent offerings in the niche, and that the negative association between crowding and survival also weakened with this saturation.


Strategic Management Journal, 37 (2016): 565-585

Biases in the selection stage of bottom-up strategy formulation

Markus Reitzig and Olav Sorenson

We propose that the failure to adopt an idea or innovation can arise from an in-group bias among employees within an organizational subunit that leads the subunit’s members to undervalue systematically ideas associated with members of the organization outside their subunit. Such biases in internal selection processes can stymie organizational adaptation and therefore depress the performance of the firm. Analyzing data on innovation proposals inside a large, multinational consumer goods firm, we find that evaluators are biased in favor of ideas submitted by individuals that work in the same division and facility as they do, particularly when they belong to small or high-status subunits.

Strategic Management Journal, 34 (2013): 782-799

Non-compete covenants: Incentives to innovate or impediments to growth

Sampsa Samila and Olav Sorenson

We find that the enforcement of non-compete clauses significantly impedes entrepreneurship and regional growth. Based on a panel of metropolitan areas in the United States from 1993 to 2002, our results indicate that, relative to regions in states that enforce non-compete covenants, an increase in the local supply of venture capital in states that restrict them has significantly stronger positive effects on (i) the number of patents, (ii) the number of firm starts, and (iii) employment. We address potential endogeneity issues in the supply of venture capital by using endowment returns as an instrumental variable. Our results point to a strong interaction between financial intermediation and the legal regime in promoting entrepreneurship and growth.

Management Science, 57 (2011): 425-438

Complexity, networks and knowledge flow

Olav Sorenson, Jan W. Rivkin, and Lee Fleming

Because knowledge plays an important role in the creation of wealth, economic actors often wish to skew the flow of knowledge in their favor. We ask, when will an actor socially close to the source of some knowledge have the greatest advantage over distant actors in receiving and building on the knowledge? Marrying a social network perspective with a view of knowledge transfer as a search process, we argue that the value of social proximity to the knowledge source depends crucially on the nature of the knowledge at hand. Simple knowledge diffuses equally to close and distant actors because distant recipients with poor connections to the source of the knowledge can compensate for their limited access by means of unaided local search. Complex knowledge resists diffusion even within the social circles in which it originated. With knowledge of moderate complexity, however, high-fidelity transmission along social networks combined with local search allows socially proximate recipients to receive and extend knowledge generated elsewhere, while interdependencies stymie more distant recipients who rely heavily on unaided search. To test this hypothesis, we examine patent data and compare citation rates across proximate and distant actors on three dimensions: (1) the inventor collaboration network; (2) firm membership; and (3) geography. We find robust support for the proposition that socially proximate actors have the greatest advantage over distant actors for knowledge of moderate complexity. We discuss the implications of our findings for the distribution of intra-industry profits, the geographic agglomeration of industries, the design of social networks within firms, and the modularization of technologies.

Research Policy, 35 (2006): 994-1017

Science and the diffusion of knowledge

Olav Sorenson and Lee Fleming

Scientists, social scientists and politicians frequently credit basic science with stimulating technological innovation, and with it economic growth. Despite a substantial body of research investigating this general relationship, relatively little empirical attention has been given to understanding the mechanisms that might generate this linkage. This paper considers whether more rapid diffusion of knowledge, brought about by the norm of publication, might account for part of this effect. We identify the importance of publication by comparing the patterns of citations from future patents to three groups of focal patents: (i) those that reference scientific (peer-reviewed) publications, (ii) those that reference commercial (non-scientific) publications; and (iii) those that reference neither. Our analyses strongly implicate publication as an important mechanism for accelerating the rate of technological innovation: Patents that reference published material, whether peer-reviewed or not, receive more citations, primarily because their influence diffuses faster in time and space.

Research Policy, 33 (2004): 1615-1634

Science as a map in technological search

Lee Fleming and Olav Sorenson

A large body of work argues that scientific research increases the rate of technological advance, and with it economic growth. The precise mechanism through which science accelerates the rate of invention, however, remains an open question. Conceptualizing invention as a combinatorial search process, this paper argues that science alters inventors’ search processes, by leading them more directly to useful combinations, eliminating fruitless paths of research, and motivating them to continue even in the face of negative feedback. These mechanisms prove most useful when inventors attempt to combine highly coupled components; therefore, the value of scientific research to invention varies systematically across applications. Empirical analyses of patent data support this thesis.

Strategic Management Journal, 25 (2004): 909-928

Navigating the technology landscape of innovation

Lee Fleming and Olav Sorenson

Some companies are better off making incremental improvements to their products. Others that must compete on their ability to innovate focus on breakthrough inventions. Either approach requires the exploration of a specific type of ‘technology landscape’ and the right strategy for searching across the terrain.

MIT Sloan Management Review, Winter 2003: 15-23