Innovation and firm growth in high-tech sectors: A quantile regression approach
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作者:
Coad, Alex
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Evolut Econ Grp, Max Planck Inst Econ, D-07745 Jena, Germany
Univ Paris 01, F-75647 Paris, France
CNRS, UMR 8174, CES Matisse, F-75647 Paris, France
St Anna Sch Adv Studies, LEM, I-56127 Pisa, PI, ItalyEvolut Econ Grp, Max Planck Inst Econ, D-07745 Jena, Germany
Coad, Alex
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Rao, Rekha
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St Anna Sch Adv Studies, LEM, I-56127 Pisa, PI, ItalyEvolut Econ Grp, Max Planck Inst Econ, D-07745 Jena, Germany
We relate innovation to sales growth for incumbent firms in high-tech sectors. A firm, on average, experiences only modest growth and may grow for a number of reasons that may or may not be related to innovative activity. However, given that the returns to innovation are highly skewed and that growth rates distributions are heavy-tailed, it may be misleading to use regression techniques that focus on the 'average effect for the average firm'. Using a quantile regression approach, we observe that innovation is of crucial importance for a handful of 'superstar' fast-growth firms. (C) 2007 Elsevier B.V. All rights reserved.