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The dynamics of innovation and horizontal differentiation

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  • Narajabad, Borghan
  • Watson, Randal

Abstract

We study innovation in a dynamic stochastic discrete-time duopoly with endogenous horizontal differentiation. Innovation takes the form of a quality ladder; horizontal differentiation is Hotelling competition. We compute Markov-perfect equilibria and study the effects on long-run innovation of changes in taste heterogeneity (transport costs) and firms' costs of relocating products. Innovation rises as the industry's long-run position moves toward products that are permanently co-located in the space of horizontal tastes. A large enough fall in taste heterogeneity will raise long-run innovation, while more costly product relocation lowers innovation if taste heterogeneity is high, and raises it otherwise.

Suggested Citation

  • Narajabad, Borghan & Watson, Randal, 2011. "The dynamics of innovation and horizontal differentiation," Journal of Economic Dynamics and Control, Elsevier, vol. 35(6), pages 825-842, June.
  • Handle: RePEc:eee:dyncon:v:35:y:2011:i:6:p:825-842
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    References listed on IDEAS

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    Cited by:

    1. Ron Borkovsky & Ulrich Doraszelski & Yaroslav Kryukov, 2012. "A dynamic quality ladder model with entry and exit: Exploring the equilibrium correspondence using the homotopy method," Quantitative Marketing and Economics (QME), Springer, vol. 10(2), pages 197-229, June.
    2. Anaya, Karim L. & Pollitt, Michael G., 2014. "Experience with smarter commercial arrangements for distributed wind generation," Energy Policy, Elsevier, vol. 71(C), pages 52-62.

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