Abstract
It is well known that there are incentives for cooperation and collaboration along the supply chain, as the performance of any one firm is dependent on that of its suppliers. However, R&D by any firm or sector may affect the performance of other firms and sectors that it supplies irrespective of whether collaboration takes place or not, as reflected in endogenous growth models where positive spillovers play a major role. This paper studies the impact of R&D spillovers on productivity performance in British firms, focusing on spillovers in a supply chain. The results show that R&D spillovers along the supply chain has the largest positive and most significant impact on labour productivity, followed by own-sector spillovers, then by own-internal R&D and own purchases of external R&D. Moreover, R&D spillovers tend to stimulate firms’ R&D and innovation spending and these, in turn, increase labour productivity.
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Notes
WIOD provides time-series of world input–output tables for forty countries worldwide and a model for the rest-of-the-world, covering the period from 1995 to 2009. It also provides data on labour and capital inputs and pollution indicators at the industry level. (http://www.wiod.org/new_site/home.htm).
Cambridge Econometrics is a leading independent consultancy specialising in applied economic modelling and data analysis techniques (http://www.camecon.com/Home.aspx).
While the estimated coefficient of the downstream flow spillovers will be a mixture of impacts from both downward and upward spillovers, the situation is slightly more complex. The downstream flows are based on a weighted sum of suppliers to a buying sector, the upstream will generally be quite different, as it will be based on a weighted sum of the buyers for a supplying sector.
Non-rivalry means one person’s use of knowledge does not prevent another’s use of it. Partial excludability indicates that the owner of knowledge cannot stop others to benefit from it free of charge or at a lower cost than the initial R&D investment (Cincera 2005, p. 659).
ARD is a confidential dataset which is only accessible for approved researchers.
Cambridge Econometrics is a leading independent consultancy specialising in applied economic modelling and data analysis techniques (http://www.camecon.com/Home.aspx).
For detailed explanation of the construction of real capital stock, please refer to the article “Estimating Capital Stock at the Firm Level” in the ARD user guide (Office for National Statistics User Guide 6644, page 149).
A detailed description can be found in ONS6644 user guide, page 149.
Note that the reference category for the variables scieeng and othersub is the proportion of workers without a degree. scieeng and othersub are included to control the quality of labour inputs of a firm.
ARD and UKIS are both confidential datasets and are only accessible subject to approval from the UK Secure Data Service.
By the time of this research project was completed, WIOD data was only available up to 2009.
Details of NACE Rev. 1 and other versions can be found on Eurostat at: http://ec.europa.eu/eurostat/statistics-explained/index.php/Glossary:Statistical_classification_of_economic_activities_in_the_European_Community_%28NACE%29
Agriculture, Hunting, Forestry and Fishing sector, Public Administration and Defence, Compulsory Social Security, Education, Health and Social Work sectors are not included due to their exclusion in UKIS.
Minimum and maximum values are not allowed to be released by the Secure Data Service for data confidentiality reasons.
A probit regression has also been conducted regressing product innovation on the other independent variables from Eq. (8). The four spillovers measures (R&D and education purchase) are not found to have any significant impact. Having more employees with a degree significantly increases the probability of product innovation. More expenditure in firms’ internal and external R&D spending and training significantly links to higher probability of product innovation. Being a process innovator is also significantly related to product innovation. Detailed results of this regression are not provided in this paper but can be provided under request.
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Li, Y., Bosworth, D. R&D spillovers in a supply chain and productivity performance in British firms. J Technol Transf 45, 177–204 (2020). https://doi.org/10.1007/s10961-018-9652-x
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DOI: https://doi.org/10.1007/s10961-018-9652-x