Further considerations on the link between adjustment costs and the productivity of R&D investment: evidence for Spain
- Desiderio Romero-Jordán 1
- José Félix Sanz-Sanz 2
- Inmaculada Álvarez-Ayuso 3
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1
Universidad Rey Juan Carlos
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2
Universidad Complutense de Madrid
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3
Universidad Autónoma de Madrid
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ISSN: 1988-8767
Año de publicación: 2006
Número: 291
Tipo: Documento de Trabajo
Otras publicaciones en: Notas técnicas: [continuación de Documentos de Trabajo FUNCAS]
Resumen
This paper constructs a dynamic model to estimate the impact of adjustment costs on the productivity of investment in R&D. In order to take into account the possible endogeneity of adjustment costs, the model is estimated by means of Instrumental Variables (IV), using a panel of Spanish companies. The results show that the elasticity of the productivity of R&D investment with regard to adjustment costs is high, with a value close to 1 (-0.96). This confirms that it is essential to include adjustment costs in the empirical analysis of R&D productivity, as suggested by Jones and Williams (1998) and Comin (2003, 2004).