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Is Demand-Pulled Innovation Equally Important in Different Groups of Firms?

  • Piva, Mariacristina


    (Università Cattolica del Sacro Cuore)

  • Vivarelli, Marco


    (Università Cattolica del Sacro Cuore)

Previous empirical literature - mainly cross-sectional - has tested the demand-pull hypothesis and found that overall, evidence does not conflict with the idea that innovation may be driven by output. Using a balanced panel of 216 Italian manufacturing firms over the 1995-2000 period, and checking for fixed effects, time, sectoral and size dummies and for the path-dependent nature of R&D, we also find a (barely significant) role of sales in inducing R&D expenditures. However, at the micro level, the demand-pull effect plays a varying role for the different sub-samples of firms. In particular, exporting firms, those which are liquidity-constrained, those not receiving public subsidies and those not heading a business group, seem to be particularly sensitive to sales in deciding their R&D expenditures. These microeconometric results have been obtained using a Least Squares Dummy Variable Corrected (LSDVC) estimator, a recently-proposed panel data technique particularly suitable for small samples.

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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 1982.

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Length: 31 pages
Date of creation: Feb 2006
Date of revision:
Publication status: published in: Cambridge Journal of Economics, 2007, 31(5), 691-710
Handle: RePEc:iza:izadps:dp1982
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