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The Effect of Connectivity, Proximity and Market Structure on R&D Networks

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In a seminal paper, Goyal and Moraga-Gonzalez (2001) use an undirected network to characterize knowledge flows between firms engaging in research in an oligopolistic market. In their paper, firms are regarded as inhabiting a research joint venture (RJV), if they share the same edge of the network. These firms are allowed an R&D spillover of 1; the outside firms (firms not sharing an edge in the network) are permitted a constant knowledge spillover that is less than one. We begin our paper by showing that this last assumption has important consequences when dealing with R&D networks of size greater than or equal to six firms. We present examples of topologically non-equivalent networks that have the same degree of connectivity and generate identical outcomes in terms of R&D effort, firm profits and total welfare. We then modify their model so that R&D spillovers decrease as the number of shortest paths increases between any two firms. We show that under product differentiated Cournot and Bertrand competition, we have different outcomes for all economic variables. We also show that R&D effort increases with respect to the number of collaborative links if firms are in a weakly competitive market, whereas it declines if firms are in a more competitive market where products are closer substitutes. We also find that in more competitive markets there is a conflict between the stability and the efficiency of RJVs.

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Paper provided by School of Economics, University of Queensland, Australia in its series Discussion Papers Series with number 454.

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Date of creation: 2011
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Handle: RePEc:qld:uq2004:454

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  1. Rabah Amir & John Wooders, 1999. "Effects of One-Way Spillovers on Market Shares, Industry Price, Welfare, and R & D Cooperation," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 8(2), pages 223-249, 06.
  2. Spence, Michael, 1984. "Cost Reduction, Competition, and Industry Performance," Econometrica, Econometric Society, vol. 52(1), pages 101-21, January.
  3. De Bondt, Raymond, 1997. "Spillovers and innovative activities," International Journal of Industrial Organization, Elsevier, vol. 15(1), pages 1-28, February.
  4. Greg Shaffer & Stephen W. Salant, 1999. "Unequal Treatment of Identical Agents in Cournot Equilibrium," American Economic Review, American Economic Association, vol. 89(3), pages 585-604, June.
  5. Ngo Van Long & Antoine Soubeyran, 1999. "Asymmetric Contributions to Research Joint Ventures," The Japanese Economic Review, Japanese Economic Association, vol. 50(2), pages 122-137, 06.
  6. Francis Bloch, 1995. "Endogenous Structures of Association in Oligopolies," RAND Journal of Economics, The RAND Corporation, vol. 26(3), pages 537-556, Autumn.
  7. Kultti, Klaus & Takalo, Tuomas, 1998. "R&D spillovers and information exchange," Economics Letters, Elsevier, vol. 61(1), pages 121-123, October.
  8. Darmot Leahy & J. Peter Neary, 1997. "Public Policy Towards R & D in Oligopolistic Industry," Politick√° ekonomie, University of Economics, Prague, vol. 1997(5), pages 683-698.
  9. Suzumura, Kotaro, 1992. "Cooperative and Noncooperative R&D in an Oligopoly with Spillovers," American Economic Review, American Economic Association, vol. 82(5), pages 1307-20, December.
  10. Kamien, Morton I & Zang, Israel, 1993. "Competing Research Joint Ventures," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 2(1), pages 23-40, Spring.
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