To meet global challenges, developing countries must increase their research capacity, transition from being research consumers to research producers, and base their policies and practices on sound scientific evidence (Cooke et al. 2018). This is challenging because developing countries have low research funding (< 0.5% of their gross domestic product), few research personnel (less than 60 researchers per million inhabitants), and poor research infrastructure (Kahn 2022). While a few indigenous researchers can provide immediate solutions to global challenges by facilitating the adoption of frontier technologies developed abroad, overreliance on adoption/adaption of frontier technologies is not a viable approach for building a sustainable research base that can address future challenges (Harris 2004). Therefore, new and more indigenous researchers are needed to strengthen developing countries’ ability to define their own problems; identify priority areas; set objectives; conduct sound research; establish sustainable research infrastructure; and develop innovative products, processes, and concepts that promote social, economic, and environmental development.
Increasing the number of researchers per million inhabitants (researcher density) is essential to meet global challenges (Hintringer et al. 2021). This is probably because when many researchers address a common problem, they tend to differentiate themselves by searching for theories from other disciplines, which leads to the development of novel concepts, theories, and processes (Rothman et al. 2001). A recent global study found that research activity, as measured by research density, is an excellent predictor of economic growth over time (Cabello et al. 2016). In the health sector, a global study showed that increasing the number of health researchers in a country is associated with a decrease in disease burden due to an increase in health innovations (Wen et al. 2022). Similarly, the number of energy researchers in a country has been shown to be a key determinant of a country’s productivity in green innovation, with the number of patents correlated to the number of energy researchers (Yang et al. 2022). A recent study in South Korea that compared the applicability of R&D investment, number of people with tertiary education, number of patents by non-citizens, number of patents by citizens, and researcher density found that the last two quantifiable factors were better indicators of innovation (Hintringer et al. 2021). Therefore, researcher density is used as an indicator of science, technology, and innovation (STI) development in the Sustainable Development Goals (SDG Indicator 9.5.2) and OECD members (OECD 2021).
It has been proposed that researcher density in developing countries can be improved by increasing research funding, building continental research networks, and incentivizing researchers abroad to return to their country of origin (Atickem et al. 2019). There is evidence that investing in R&D can increase economic growth; however, successful R&D requires increasing researcher density. In addition, while continental research networks and returning researchers are helpful for knowledge transfer, they are not feasible for building a sustainable pipeline to train new researchers at the national or regional level. However, the scarcity of researchers in developing countries is often associated with political instability, poor governance, and lack of political will. These three issues can best be addressed by developing STI policies that outline procedures, guidelines, processes, and actions to increase researcher density at continental, regional, national, and sectoral levels.
To build resilient infrastructure, foster innovation, and promote sustainable infrastructure, synergies are required at different governance levels and between sectors to increase researcher density. This study seeks to answer the following question: Are STI policies in developing countries coherent with the goal of meeting global challenges by increasing researcher densities at national, regional, and continental scales? We answer this question by examining interlinkages in commitment to increasing researcher density across governance levels, that is, continental (African Union, AU), regional (Southern African Development Community, SADC), and national (Zimbabwe) levels, and assessing for consistency, coherence, and congruence in: (i) the Sustainability Development Goals and STI policies in Africa; (ii) the international objectives and national contexts; (iii) the actions proposed by diverse stakeholders; and (iv) social, economic, and environmental policies issued by different sectors or governance levels (OECD 2016). Finally, we proposed a framework for developing coherent and consistent STI policies across sectors and governance levels.