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Threshold effects in the patent-growth relationship: a PSTR approach for 60 developed and developing countries

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  • Roula Inglesi-Lotz
  • Abdelaziz Hakimi
  • Majdi Karmani
  • Rim Boussaada

Abstract

This study analyzes whether there is a threshold effect in the innovation-growth relationship. Using data from the period 2008–2017, we perform an analysis using 60 countries in the whole sample and a split-sample analysis in which we separate developed countries (36) from developing countries (24). The results for the panel smooth transition regression (PSTR) model indicate that there is a threshold effect in the innovation-growth relationship. We find that below the threshold, the effect of innovation measured by the number of patents is not significant for developed and developing countries. However, surpassing the optimal threshold, the effect becomes positive only for the whole sample and developed countries. Furthermore, findings also indicate that research and development expenditure, domestic and foreign investments stimulate economic growth.

Suggested Citation

  • Roula Inglesi-Lotz & Abdelaziz Hakimi & Majdi Karmani & Rim Boussaada, 2020. "Threshold effects in the patent-growth relationship: a PSTR approach for 60 developed and developing countries," Applied Economics, Taylor & Francis Journals, vol. 52(32), pages 3512-3524, June.
    • Handle: RePEc:taf:applec:v:52:y:2020:i:32:p:3512-3524
    DOI: 10.1080/00036846.2020.1713295
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    Cited by:

    1. Ahmadova, Gozal & Delgado-Márquez, Blanca L. & Pedauga, Luis E. & Leyva-de la Hiz, Dante I., 2022. "Too good to be true: The inverted U-shaped relationship between home-country digitalization and environmental performance," Ecological Economics, Elsevier, vol. 196(C).
    2. Li, Guangchen & Wei, Weixian, 2021. "Financial development, openness, innovation, carbon emissions, and economic growth in China," Energy Economics, Elsevier, vol. 97(C).

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