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Innovation and R&D Investment of Tunisian Firms: A Two-Regime Model with Selectivity Correction

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  • Zouhour Karray

    (Faculté des Sciences Economiques et de Gestion de Nabeul)

  • Mohamed Kriaa

Abstract

The purpose of the paper is to produce new empirical evidence regarding the determinants of R&D investment by Tunisian firms, through introducing the relationship between R&D expenditures and innovation effort of firms. We suppose that factors explaining in-house R&D are not the same according to whether the firm is innovating or not. Our empirical analysis utilizes econometric models of selectivity correction (Heckman, 1976-1979; Lee, 1976-1978) and considers a sample of 320 firms during the period 2002-2005. On the one hand, econometrics results show a positive impact of R&D activities, human capital quality, past experience in innovation and publics subsidies on probability to innovate of firms whereas ownership structure (state and foreign owners) have a negative impact. While on the other hand, when estimating the determinants of R&D expenditures for the two groups of firms (innovating and non-innovating) we find interesting results; there are spillover effects only for innovating firms and which have an absorptive capacity. Also channels for acquisition of external technologies play an important role in explaining R&D expenditures. Finally, ownership structure has a significant impact on R&D investment especially for foreign controlled firms. The effect is positive for innovating firms and negative for noninnovating firms.

Suggested Citation

  • Zouhour Karray & Mohamed Kriaa, 2009. "Innovation and R&D Investment of Tunisian Firms: A Two-Regime Model with Selectivity Correction," Working Papers 484, Economic Research Forum, revised Apr 2009.
    • Handle: RePEc:erg:wpaper:484
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    2. Mounir Amdaoud & Messaoud Zouikri, 2018. "Compétences externes et innovation: le cas des firmes de l'industrie manufacturière algérienne," Working Papers hal-04141692, HAL.
    3. Mounir Amdaoud & Christian Le Bas, 2020. "Firm Patenting and Types of innovation in Least Developed Countries. An Empirical Investigation on Patenting Determinants," CEPN Working Papers hal-03059466, HAL.
    4. Izak Atiyas, 2011. "Firm Level Data in The ERF Region: Research Questions, Data Requirements and Possibilities," Working Papers 589, Economic Research Forum, revised 06 Jan 2011.

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