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Does income inequality affect green innovation? A non-linear evidence

    Xing-Yun Zou Affiliation
    ; Xin-Yu Peng Affiliation
    ; Xin-Xin Zhao Affiliation
    ; Jie Ma Affiliation
    ; Chun-Ping Chang Affiliation

Abstract

It is crucial for the advancement of political economics and innovation economics to examine the relationship between income inequality and green innovation (GI). Using the panel fixed effect model, this study investigates the influence of income inequality on GI across 97 countries from 1991 to 2018 and demonstrates a significant non-linear association between the two. The empirical data exhibit an inverted U-shape relationship, suggesting that there is an optimal degree of income inequality that optimizes GI output, and the inflection point of our overall sample is at a Gini coefficient of 0.366. Additionally, we choose a set of robustness tests to validate the results by substituting explained variables, adding omitted variables, and employing the difference and system generalized method of moments (GMM) estimations. Moreover, heterogeneity analysis reveals that the non-linear patterns vary among samples, with the U-shape relationship being more significant in countries with lower income, higher corruption, and weaker government effectiveness. Our findings provide government decision-makers with a crucial reference for maximizing the importance of income distribution in fostering GI and achieving sustainable development.


First published online 24 August 2023

Keyword : income inequality, green innovation (GI), panel fixed effect model

How to Cite
Zou, X.-Y., Peng, X.-Y., Zhao, X.-X., Ma, J., & Chang, C.-P. (2024). Does income inequality affect green innovation? A non-linear evidence. Technological and Economic Development of Economy, 30(3), 578–602. https://doi.org/10.3846/tede.2023.19271
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May 22, 2024
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References

Abban, O. J., Wu, J., & Mensah, I. A. (2020). Analysis on the nexus amid CO2 emissions, energy intensity, economic growth, and foreign direct investment in Belt and Road economies: Does the level of income matter? Environmental Science and Pollution Research, 27(10), 11387–11402. https://doi.org/10.1007/s11356-020-07685-9

Acemoglu, D., Naidu, S., Restrepo, P., & Robinson, J. A. (2019). Democracy does cause growth. Journal of Political Economy, 127(1), 47–100. https://doi.org/10.1086/700936

Acs, Z. J., Anselin, L., & Varga, A. (2002). Patents and innovation counts as measures of regional production of new knowledge. Research Policy, 31(7), 1069–1085. https://doi.org/10.1016/S0048-7333(01)00184-6

Afesorgbor, S. K. (2019). The impact of economic sanctions on international trade: How do threatened sanctions compare with imposed sanctions? European Journal of Political Economy, 56, 11–26. https://doi.org/10.1016/j.ejpoleco.2018.06.002

Aghion, P., Akcigit, U., Bergeaud, A., Blundell, R., & Hemous, D. (2019). Innovation and top income inequality. The Review of Economic Studies, 86(1), 1–45. https://doi.org/10.1093/restud/rdy027

Ahuja, M., Mondal, D., Mishra, D. P., Ghosh, S., & Kumar, M. (2023). Assessment of financial and environmental impacts of pre-mining methane drainage in Indian scenario: A case study using Jharia coal seams. Innovation and Green Development, 2(3), 100065. https://doi.org/10.1016/j.igd.2023.100065

Arellano, M., & Bond, S. R. (1991). Some tests of specification for panel data: Monte Carlo evidence and an application to employment equations. Review of Economic Studies, 58(2), 277–297. https://doi.org/10.2307/2297968

Arin, K. P., Berlemann, M., Koray, F., & Kuhlenkasper, T. (2011). The taxation-growth-nexus revisited (HWWI Research Paper No. 104). Hamburg Institute of International Economics.

Awan, A. G., & Yaqoob, R. (2023). Economic value of introducing technology to improve productivity: An ARDL approach. Innovation and Green Development, 2(3), 100069. https://doi.org/10.1016/j.igd.2023.100069

Bai, C., Feng, C., Yan, H., Yi, X., Chen, Z., & Wei, W. (2020). Will income inequality influence the abatement effect of renewable energy technological innovation on carbon dioxide emissions? Journal of Environmental Management, 264, 110482. https://doi.org/10.1016/j.jenvman.2020.110482

Berg, A., Ostry, J. D., Tsangarides, C. G., & Yakhshilikov, Y. (2018). Redistribution, inequality, and growth: New evidence. Journal of Economic Growth, 23(3), 259–305. https://doi.org/10.1007/s10887-017-9150-2

Bernardino, J. P. R., & Araújo, T. (2013). On positional consumption and technological innovation: An agent-based model. Journal of Evolutionary Economics, 23, 1047–1071. https://doi.org/10.1007/s00191-013-0317-5

Blundell, R., & Bond, S. (1998). Initial conditions and moment restrictions in dynamic panel data models. Journal of Econometrics, 87(1), 115–143. https://doi.org/10.1016/S0304-4076(98)00009-8

Brasington, D. M., & Hite, D. (2005). Demand for environmental quality: A spatial hedonic analysis. Regional Science & Urban Economics, 35(1), 57–82. https://doi.org/10.1016/j.regsciurbeco.2003.09.001

Breau, S., Kogler, D. F., & Bolton, K. C. (2014). On the relationship between innovation and wage inequality: New evidence from Canadian cities. Economic Geography, 90(4), 351–373. https://doi.org/10.1111/ecge.12056

Bronzini, R., & Piselli, P. (2016). The impact of R&D subsidies on firm innovation. Research Policy, 45(2), 442–457. https://doi.org/10.1016/j.respol.2015.10.008

Chai, J., Wu, H., & Hao, Y. (2022). Planned economic growth and controlled energy demand: How do regional growth targets affect energy consumption in China? Technological Forecasting and Social Change, 185, 122068. https://doi.org/10.1016/j.techfore.2022.122068

Chancel, L., Piketty, T., Saez, E., & Zucman, G. (2022). World inequality report 2022. World Inequality Lab. Harvard University Press. https://doi.org/10.4159/9780674276598

Chang, C.-H. (2011). The influence of corporate environmental ethics on competitive advantage: The mediation role of green innovation. Journal of Business Ethics, 104(3), 361–370. https://doi.org/10.1007/s10551-011-0914-x

Chang, Y., Ries, R. J., & Wang, Y. (2010). The embodied energy and environmental emissions of construction projects in China: An economic input-output LCA model. Energy Policy, 38(11), 6597–6603. https://doi.org/10.1016/j.enpol.2010.06.030

Chen, H., & Yoon, S. S. (2019). Government efficiency and enterprise innovation – evidence from China. Asian Journal of Technology Innovation, 27(3), 280–300. https://doi.org/10.1080/19761597.2019.1678389

Chen, J., Wang, L., & Li, Y. (2020). Natural resources, urbanization and regional innovation capabilities. Resources Policy, 66, 101643. https://doi.org/10.1016/j.resourpol.2020.101643

Chen, X., Fu, Q., & Chang, C. P. (2021a). What are the shocks of climate change on clean energy investment: A diversified exploration. Energy Economics, 95, 105136. https://doi.org/10.1016/j.eneco.2021.105136

Chen, Y., Liu, M., & Su, J. (2013). Greasing the wheels of bank lending: Evidence from private firms in China. Journal of Banking & Finance, 37(7), 2533–2545. https://doi.org/10.1016/j.jbankfin.2013.02.002

Chen, Y. E., Li, C., Chang, C. P., & Zheng, M. (2021b). Identifying the influence of natural disasters on technological innovation. Economic Analysis and Policy, 70, 22–36. https://doi.org/10.1016/j.eap.2021.01.016

Cheng, K. M. (2010). Theoretical mechanism and evidence of the technology innovation facilitated by the urbanization. Science Research Management, 31(2), 26–34.

Choi, C., & Yi, M. H. (2018). The Internet, R&D expenditure and economic growth. Applied Economics Letters, 25(4), 264–267. https://doi.org/10.1080/13504851.2017.1316819

Chu, A. C., Cozzi, G., & Furukawa, Y. (2016). Unions, innovation and cross-country wage inequality. Journal of Economic Dynamics and Control, 64(3), 104–118. https://doi.org/10.1016/j.jedc.2015.12.004

Craney, T. A., & Surles, J. G. (2002). Model-dependent variance inflation factor cutoff values. Quality Engineering, 14(3), 391–403. https://doi.org/10.1081/QEN-120001878

Croix, D., & Doepke, M. (2004). Public versus private education when differential fertility matters. Journal of Development Economics, 73(2), 607–629. https://doi.org/10.1016/j.jdeveco.2003.05.005

Dickman, S. L., Himmelstein, D. U., & Woolhandler, S. (2017). Inequality and the health-care system in the USA. The Lancet, 389(10077), 1431–1441. https://doi.org/10.1016/S0140-6736(17)30398-7

Dong, J., Li, W., Cao, Y., & Fang, J. (2016). How does technology and population progress relate? An empirical study of the last 10,000 years. Technological Forecasting and Social Change, 103(4), 57–70. https://doi.org/10.1016/j.techfore.2015.11.011

Dosi, G. (1988). Sources, procedures, and microeconomic effects of innovation. Journal of Economic Literature, 26(3), 1120–1171.

Edler, J., & Georghiou, L. (2007). Public procurement and innovation – Resurrecting the demand side. Research Policy, 36(7), 949–963. https://doi.org/10.1016/j.respol.2007.03.003

Ellis, J., Smith, J., & White, R. (2020). Corruption and corporate innovation. Journal of Financial and Quantitative Analysis, 55(7), 2124–2149. https://doi.org/10.1017/S0022109019000735

Fernando, Y., Jabbour, C. J. C., & Wah, W. X. (2019). Pursuing green growth in technology firms through the connections between environmental innovation and sustainable business performance: Does service capability matter? Resources, Conservation and Recycling, 141, 8–20. https://doi.org/10.1016/j.resconrec.2018.09.031

Flanagan, K., Uyarra, E., & Laranja, M. (2011). Reconceptualising the “policy mix” for innovation. Research Policy, 40(5), 702–713. https://doi.org/10.1016/j.respol.2011.02.005

Foellmi, R., & Zweimüller, J. (2006). Income distribution and demand-induced innovations. Review of Economic Studies, 73(4), 941–960. https://doi.org/10.1111/j.1467-937X.2006.00403.x

Foellmi, R., & Zweimüller, J. (2017). Is inequality harmful for innovation and growth? Price versus market size effects. Journal of Evolutionary Economics, 27(2), 359–378. https://doi.org/10.1007/s00191-016-0451-y

Foellmi, R., Wuergler, T., & Zweimüller, J. (2014). The macroeconomics of Model T. Journal of Economic Theory, 153, 617–647. https://doi.org/10.1016/j.jet.2014.03.002

Frías, J. A., Kaplan, D. S., & Verhoogen, E. (2012). Exports and within-plant wage distributions: Evidence from Mexico. American Economic Review, 102(3), 435–440. https://doi.org/10.1257/aer.102.3.435

Fu, Q., Chen, Y. E., Jang, C. L., & Chang, C. P. (2020). The impact of international sanctions on environmental performance. Science of The Total Environment, 745, 141007. https://doi.org/10.1016/j.scitotenv.2020.141007

Fu, Q., Gong, Q., Zhao, X. X., & Chang, C. P. (2023). The effects of international sanctions on green innovations. Technological and Economic Development of Economy, 29(1), 141–164. https://doi.org/10.3846/tede.2022.17782

Fu, T., & Jian, Z. (2021). Corruption pays off: How environmental regulations promote corporate innovation in a developing country. Ecological Economics, 183, 106969. https://doi.org/10.1016/j.ecolecon.2021.106969

Greewood, J., & Mukoyama, E. (2001). The effect of income distribution on the timing of new product introduction. University of Rochester, Mimeo.

Griliches, Z. (1990). Patent statistics as economic indicators: A survey. Journal of Economic Literature, 28(4), 1661–1707.

Hao, Y., Gai, Z. Q., & Wu, H. T. (2020). How do resource misallocation and government corruption affect green total factor energy efficiency? Evidence from China. Energy Policy, 143, 111562. https://doi.org/10.1016/j.enpol.2020.111562

Hao, X., Li, Y., Ren, S., Wu, H., & Hao, Y. (2023). The role of digitalization on green economic growth: Does industrial structure optimization and green innovation matter? Journal of Environmental Management, 325, 116504. https://doi.org/10.1016/j.jenvman.2022.116504

He, F., Ma, Y., & Zhang, X. (2020). How does economic policy uncertainty affect corporate innovation? Evidence from China listed companies. International Review of Economics & Finance, 67, 225–239. https://doi.org/10.1016/j.iref.2020.01.006

Hojnik, J., & Ruzzier, M. (2016). The driving forces of process eco-innovation and its impact on performance: Insights from Slovenia. Journal of Cleaner Production, 133, 812–825. https://doi.org/10.1016/j.jclepro.2016.06.002

Huang, J. W., & Li, Y. H. (2017). Green innovation and performance: The view of organizational capability and social reciprocity. Journal of Business Ethics, 145(2), 309–324. https://doi.org/10.1007/s10551-015-2903-y

Hudson, J., & Minea, A. (2013). Innovation, intellectual property rights, and economic development: A unified empirical investigation. World Development, 46, 66–78. https://doi.org/10.1016/j.worlddev.2013.01.023

Jalles, J. T. (2010). How to measure innovation? New evidence of the technology – growth linkage. Research in Economics, 64(2), 81–96. https://doi.org/10.1016/j.rie.2009.10.007

Jorgenson, A., Schor, J., & Huang, X. (2017). Income inequality and carbon emissions in the United States: A state-level analysis, 1997–2012. Ecological Economics, 134, 40–48. https://doi.org/10.1016/j.ecolecon.2016.12.016

Kogan, L., Papanikolaou, D., Seru, A., & Stoffman, N. (2017). Technological innovation, resource allocation, and growth. Quarterly Journal of Economics, 132(2), 665–712. https://doi.org/10.1093/qje/qjw040

Koh, S. G. M., Lee, G. H. Y., & Bomhoff, E. J. (2020). The income inequality, financial depth and economic growth nexus in China. The World Economy, 43(2), 412–427. https://doi.org/10.1111/twec.12825

Kraus, S., Rehman, S. U., & García, F. J. S. (2020). Corporate social responsibility and environmental performance: The mediating role of environmental strategy and green innovation. Technological Forecasting and Social Change, 160, 120262. https://doi.org/10.1016/j.techfore.2020.120262

Kremer, M. (1993). Population growth and technological change: One million B.C. To 1990. Quarterly Journal of Economics, 108(3), 681–716. https://doi.org/10.2307/2118405

Law, S. H., Naseem, N. A. M., Lau, W. T., & Trinugroho, I. (2020). Can innovation improve income inequality? Evidence from panel data. Economic Systems, 44(4), 100815. https://doi.org/10.1016/j.ecosys.2020.100815

Lee, C. C., Lee, C. C., & Lien, D. (2020). Income inequality, globalization, and country risk: A cross-country analysis. Technological and Economic Development of Economy, 26(2), 379–404. https://doi.org/10.3846/tede.2019.11414

Li, D., Zheng, M., Cao, C., Chen, X., Ren, S., & Huang, M. (2017). The impact of legitimacy pressure and corporate profitability on green innovation: Evidence from China top 100. Journal of Cleaner Production, 141, 41–49. https://doi.org/10.1016/j.jclepro.2016.08.123

Li, S., Chang, G., & Zunong, R. (2023a) Does regional digital economy development influence green investment? Innovation and Green Development, 2(3), 100053. https://doi.org/10.1016/j.igd.2023.100053

Li, X., Yu, G., Wen, L., & Liu, G. (2023b). Research on the effect of agricultural science and technology service supply from the perspective of farmers’ differentiation. Innovation and Green Development, 2(3), 100055. https://doi.org/10.1016/j.igd.2023.100055

Lin, H., Zeng, S. X., Ma, H. Y., Qi, G. Y., & Tam, V. W. Y. (2014). Can political capital drive corporate green innovation? Lessons from China. Journal of Cleaner Production, 64, 63–72. https://doi.org/10.1016/j.jclepro.2013.07.046

Liu, Z., Zhang, H., Zhang, Y. J., & Qin, C. X. (2020). How does income inequality affect energy efficiency? Empirical evidence from 33 Belt and Road Initiative countries. Journal of Cleaner Production, 269, 122421. https://doi.org/10.1016/j.jclepro.2020.122421

Long, H., Chang, C. P., Jegajeevan, S., & Tang, K. (2022). Can Central Bank mitigate the effects of the COVID-19 pandemic on the macroeconomy? Emerging Markets Finance and Trade, 58(9), 2652–2669. https://doi.org/10.1080/1540496X.2021.2007880

Lovett, K. (2011). Institutional design and economic growth: The relationship between bureaucracy and economic performance in a global economy (Working Paper).

Luo, Y., Salman, M., & Lu, Z. (2021). Heterogeneous impacts of environmental regulations and foreign direct investment on green innovation across different regions in China. Science of The Total Environment, 759, 143744. https://doi.org/10.1016/j.scitotenv.2020.143744

Luo, S., Yimamu, N., Li, Y., Wu, H., Irfan, M., & Hao, Y. (2022). Digitalization and sustainable development: How could digital economy development improve green innovation in China? Business Strategy and the Environment. https://doi.org/10.1002/bse.3223

Mgomezulu, W. R., Edriss, A. K., Machira, K., & Pangapanga-Phiri, I. (2023). Towards sustainability in the adoption of sustainable agricultural practices: Implications on household poverty, food and nutrition security. Innovation and Green Development, 2(3), 100054. https://doi.org/10.1016/j.igd.2023.100054

Moran, P., & Queralto, A. (2018). Innovation, productivity, and monetary policy. Journal of Monetary Economics, 93, 24–41. https://doi.org/10.1016/j.jmoneco.2017.10.006

Murphy, K. M., Shleifer, A., & Vishny, R. (1989). Income distribution, market size, and industrialization. Quarterly Journal of Economics, 104(3), 537–564. https://doi.org/10.2307/2937810

Murphy, K. M., Shleifer, A., & Vishny, R. W. (1993). Why is rent-seeking so costly to growth? American Economic Review, 83(2), 409–414.

Napolitano, L., Sbardella, A., Consoll, D., Barbieri, N., & Perruchas, F. (2020). Green innovation and income inequality: A complex system analysis (SPRU Working Paper Series (SWPS 2020-11). https://doi.org/10.2139/ssrn.3663871

Nasreen, S., & Anwar, S. (2014). Causal relationship between trade openness, economic growth and energy consumption: A panel data analysis of Asian countries. Energy Policy, 69, 82–91. https://doi.org/10.1016/j.enpol.2014.02.009

Niessen, L. W., Mohan, D., Akuoku, J. K., Mirelman, A. J., Ahmed, S., Koehlmoos, T. P., Trujillo, A., Khan, J., & Peters, D. H. (2018). Tackling socioeconomic inequalities and non-communicable diseases in low-income and middle-income countries under the Sustainable Development agenda. The Lancet, 391(10134), 2036–2046. https://doi.org/10.1016/S0140-6736(18)30482-3

Owens, A., Reardon, S. F., & Jencks, C. (2016). Income segregation between schools and school districts. American Educational Research Journal, 53(4), 1159–1197. https://doi.org/10.3102/0002831216652722

Patel, V., Burns, J. K., Dhingra, M., Tarver, L., Kohrt, B. A., & Lund, C. (2018). Income inequality and depression: A systematic review and meta-analysis of the association and a scoping review of mechanisms. World Psychiatry, 17(1), 76–89. https://doi.org/10.1002/wps.20492

Peng, X. Y., Zou, X. Y., Zhao, X. X., & Chang, C. P. (2023). How does economic policy uncertainty affect green innovation? Technological and Economic Development of Economy, 29(1), 114–140. https://doi.org/10.3846/tede.2022.17760

Pickett, K. E., & Wilkinson, R. G. (2015). Income inequality and health: A causal review. Social Science & Medicine, 128, 316–326. https://doi.org/10.1016/j.socscimed.2014.12.031

Policardo, L., & Carrera, E. J. S. (2018). Corruption causes inequality, or is it the other way around? An empirical investigation for a panel of countries. Economic Analysis and Policy, 59, 92–102. https://doi.org/10.1016/j.eap.2018.05.001

Policardo, L., Sanchez Carrera, E. J., & Risso, W. A. (2019). Causality between income inequality and corruption in OECD countries. World Development Perspectives, 14, 100102. https://doi.org/10.1016/j.wdp.2019.02.013

Pradhan, R. P., Arvin, M. B., Nair, M., Bennett, S. E., Bahmani, S., & Hall, J. H. (2018). Endogenous dynamics between innovation, financial markets, venture capital and economic growth: Evidence from Europe. Journal of Multinational Financial Management, 45, 15–34. https://doi.org/10.1016/j.mulfin.2018.01.002

Qin, B., Gao, Y., Ge, L., & Zhu, J. (2023). The influence mechanism of outward FDI reverse technology spillovers on China’s green innovation. Technological and Economic Development of Economy, 29(2), 468–499. https://doi.org/10.3846/tede.2022.17930

Raihan, A. (2023). Nexus between greenhouse gas emissions and its determinants: The role of renewable energy and technological innovations towards green development in South Korea. Innovation and Green Development, 2(3), 100066. https://doi.org/10.1016/j.igd.2023.100055

Ren, S., Hao, Y., & Wu, H. (2023). Digitalization and environment governance: does internet development reduce environmental pollution? Journal of Environmental Planning and Management, 66(7), 1533–1562. https://doi.org/10.1080/09640568.2022.2033959

Roper, S., Love, J. H., & Bonner, K. (2017). Firms’ knowledge search and local knowledge externalities in innovation performance. Research Policy, 46(1), 43–56. https://doi.org/10.1016/j.respol.2016.10.004

Schmookler, J. (1966). Inventions and economic growth. Harvard University Press.

Shahzad, M., Qu, Y., Javed, S. A., Zafar, A. U., & Rehman, S. U. (2020). Relation of environment sustainability to CSR and green innovation: A case of Pakistani manufacturing industry. Journal of Cleaner Production, 253, 119938. https://doi.org/10.1016/j.jclepro.2019.119938

Soava, G., Mehedintu, A., & Sterpu, M. (2020). Relations between income inequality, economic growth and poverty threshold: New evidences from EU countries panels. Technological and Economic Development of Economy, 26(2), 290–310. https://doi.org/10.3846/tede.2019.11335

Song, M., Wang, S., & Zhang, H. (2020). Could environmental regulation and R&D tax incentives affect green product innovation? Journal of Cleaner Production, 258, 120849. https://doi.org/10.1016/j.jclepro.2020.120849

Sun, H., Edziah, B. K., Sun, C., & Kporsu, A. K. (2019). Institutional quality, green innovation and energy efficiency. Energy Policy, 135, 111002. https://doi.org/10.1016/j.enpol.2019.111002

Tselios, V. (2011). Is inequality good for innovation? International Regional Science Review, 34(1), 75–101. https://doi.org/10.1177/0160017610383278

UNU-WIDER. (2021). World Income Inequality Database (WIID). Version 31 May 2021. https://doi.org/10.35188/UNU-WIDER/WIID-310521

Vona, F., & Patriarca, F. (2011). Income inequality and the development of environmental technologies. Ecological Economics, 70(11), 2201–2213. https://doi.org/10.1016/j.ecolecon.2011.06.027

Wang, C., & Li, J. (2019). An evaluation of regional green innovation performance in China and its spatial-temporal differences based on the panel data of inter-provincial industrial enterprises from 2005 to 2015. Science Research Management, 40(6), 29–42 (in Chinese).

Wang, Q. J., Feng, G. F., Chen, Y. E., Wen, J., & Chang, C. P. (2019). The impacts of government ideology on innovation: What are the main implications? Research Policy, 48(5), 1232–1247. https://doi.org/10.1016/j.respol.2018.12.009

Wang, Q. J., Feng, G. F., Wang, H. J., & Chang, C. P. (2022). The influence of political ideology on greenhouse gas emissions. Global Environmental Change, 74, 102496. https://doi.org/10.1016/j.gloenvcha.2022.102496

Wang, Q. J., Feng, G. F., Wang, H. J., & Chang, C. P. (2021). The impacts of democracy on innovation: Revisited evidence. Technovation, 108, 102333. https://doi.org/10.1016/j.technovation.2021.102333

Warner, K., Hamza, M., Oliver-Smith, A., Renaud, F., & Julca, A. (2010). Climate change, environmental degradation and migration. Natural Hazards, 55(3), 689–715. https://doi.org/10.1007/s11069-009-9419-7

Wei, Y. M., Mi, Z. F., & Huang, Z. (2015). Climate policy modeling: An online SCI-E and SSCI based literature review. Omega, 57, 70–84. https://doi.org/10.1016/j.omega.2014.10.011

Wen, J., Deng, P., Zhang, Q., & Chang, C. P. (2021). Is higher government efficiency bringing about higher innovation? Technological and Economic Development of Economy, 27(3), 626–655. https://doi.org/10.3846/tede.2021.14269

Wen, J., Hao, Y., Feng, G. F., & Chang, C. P. (2016). Does government ideology influence environmental performance? Evidence based on a new dataset. Economic Systems, 40(2), 232–246. https://doi.org/10.1016/j.ecosys.2016.04.001

Wen, J., Yin, H. T., Jang, C. L., Uchida, H., & Chang, C. P. (2023a). Does corruption hurt green innovation? Yes – Global evidence from cross-validation. Technological Forecasting and Social Change, 188, 122313. https://doi.org/10.1016/j.techfore.2022.122313

Wen, J., Zhang, S., & Chang, C. P. (2022). Legal origins and innovation: Global evidence. Technological Forecasting and Social Change, 174, 121216. https://doi.org/10.1016/j.techfore.2021.121216

Wen, J., Zhao, X. X., Fu, Q., & Chang, C. P. (2023b). The impact of extreme weather events on green innovation: Which ones bring to the most harm? Technological Forecasting and Social Change, 188, 122322. https://doi.org/10.1016/j.techfore.2023.122322

Wen, J., Zhao, X. X., Wang, Q. J., & Chang, C. P. (2020b). The impact of international sanctions on energy security. Energy & Environment, 32(3), 458–480. https://doi.org/10.1177/0958305X20937686

Wen, J., Zheng, M., Feng, G. F., Chen, S. W., & Chang, C. P. (2020a). Corruption and innovation: Linear and nonlinear investigations of OECD countries. The Singapore Economic Review, 65(01), 103–129. https://doi.org/10.1142/S0217590818500273

World Bank. (2020). World development indicators. World Bank, Washington DC.

Wu, R., & Xie, Z. (2020). Identifying the impacts of income inequality on CO2 emissions: Empirical evidences from OECD countries and non-OECD countries. Journal of Cleaner Production, 277, 123858. https://doi.org/10.1016/j.jclepro.2020.123858

Xue, Y., Jiang, C., Guo, Y., Liu, J., Wu, H., & Hao, Y. (2022). Corporate social responsibility and high-quality development: Do green innovation, environmental investment and corporate governance matter? Emerging Markets Finance and Trade, 58(11), 3191–3214. https://doi.org/10.1080/1540496X.2022.2034616

Yang, H. C., Feng, G. F., Zhao, X. X., & Chang, C. P. (2022). The impacts of energy insecurity on green innovation: A multi-country study. Economic Analysis and Policy, 74, 139–154. https://doi.org/10.1016/j.eap.2022.01.017

Yang, J., & Chen, S. (2023). Corporate financialization, digitalization and green innovation: A panel investigation on Chinese listed firms. Innovation and Green Development, 2(3), 100068. https://doi.org/10.1016/j.igd.2023.100068

Yin, H. T., Chang, C. P., Anugrah, D. F., & Gunadi, I. (2023). Gender equality and central bank independence. Economic Analysis and Policy, 78, 661–672. https://doi.org/10.1016/j.eap.2023.04.006

Yin, H.-T., Chang, C.-P., & Wang, H. (2022a). The impact of monetary policy on green innovation: Global evidence. Technological and Economic Development of Economy, 28(6), 1933–1953. https://doi.org/10.3846/tede.2022.17020

Yin, H.-T., Wen, J., & Chang, C.-P. (2022b). Science-technology intermediary and innovation in China: Evidence from State Administration for Market Regulation, 2000–2019. Technology in Society, 68, 101864. https://doi.org/10.1016/j.techsoc.2022.101864

Yolcan, O. O. (2023). World energy outlook and state of renewable energy: 10-Year evaluation. Innovation and Green Development, 2(4), 100070. https://doi.org/10.1016/j.igd.2023.100070

Zecca, E., & Nicolli, F. (2021). Inequality, democracy and green technological change. Journal of Cleaner Production, 306, 127061. https://doi.org/10.1016/j.jclepro.2021.127061

Zhao, W., Hafeez, M., Maqbool, A., Ullah, S., & Sohail, S. (2021). Analysis of income inequality and environmental pollution in BRICS using fresh asymmetric approach. Environmental Science and Pollution Research, 28(37), 51199–51209. https://doi.org/10.1007/s1156-021-14209-6

Zhao, X. X., Wen, J., Zou, X. Y., Wang, Q. J., & Chang, C. P. (2023). Strategies for the sustainable development of China in the post‐epidemic era. Sustainable Development, 31(1), 426–438. https://doi.org/10.1002/sd.2401

Zhao, X. X., Zheng, M., & Fu, Q. (2022). How natural disasters affect energy innovation? The perspective of environmental sustainability. Energy Economics, 109, 105992. https://doi.org/10.1016/j.eneco.2022.105992

Zheng, M., Feng, G.-F., Jiang, R.-A., & Chang, C.-P. (2023a). Does environmental, social, and governance performance move together with corporate green innovation in China? Business Strategy and the Environment, 32(4), 1670–1679. https://doi.org/10.1002/bse.3211

Zheng, M., Feng, G. F., Zhao, X., & Chang, C. P. (2023b). The transaction behavior of cryptocurrency and electricity consumption. Financial Innovation, 9(1), 44. https://doi.org/10.1186/s40854-023-00449-7

Zheng, M., Feng, G. F., Jang, C. L., & Chang, C. P. (2021). Terrorism and green innovation in renewable energy. Energy Economics, 104, 105695. https://doi.org/10.1016/j.eneco.2021.105695

Zheng, M., Feng, G. F., Wen, J., & Chang, C. P. (2020). The influence of FDI on domestic innovation: An investigation using structural breaks. Prague Economic Papers, 29(4), 403–423. https://doi.org/10.18267/j.pep.739

Zhongzheng, W. (2023). Extreme risk transmission mechanism between oil, green bonds and new energy vehicles. Innovation and Green Development, 2(3), 100064. https://doi.org/10.1016/j.igd.2023.100064

Zhu, P. F., & Xu, W. M. (2003). On the impact of government’s S&T incentive policy on the R&D input and its patent output of large and medium-sized industrial firms in Shanghai. Economic Research Journal, 6, 45–53.

Zou, X. Y., Peng, X. Y., Zhao, X. X., & Chang, C. P. (2023). The impact of extreme weather events on water quality: International evidence. Natural Hazards, 115(1), 1–21. https://doi.org/10.1007/s11069-022-05548-9

Zweimüller, J. (2000). Schumpeterian entrepreneurs meet Engel’s law: The impact of inequality on innovation-driven growth. SSRN Electronic Journal, 27(1), 1–20.