Are Institutions, Innovation, and Education the Key to Sustainable Growth in G20 Economies?

This study aims to examine the fundamental determinants of economic growth in G20 countries in the context of institutional structure, innovation, and education. The significance of the research lies in revealing that sustainable economic growth is shaped not only by traditional macroeconomic factors but also by the effectiveness of institutions, innovation capacity, and human capital investments. The existing literature contains limited studies that comprehensively address the interactions between these three variables and economic growth, specifically in G20 countries. The study applies panel data analysis to G20 countries for the period 2005–2024 and performs panel Granger causality analysis using fixed and random effects models after horizontal section dependence, unit root, and cointegration tests. Empirical findings show that institutions, innovation, and education variables have significant and positive effects on economic growth. Granger causality test results reveal that these variables unidirectionally drive growth, while growth has no feedback effect on these factors. The findings indicate that strengthening institutional reforms, encouraging R&D and innovation investments, and increasing human capital capacity are critical for sustainable and high-quality economic growth for policymakers.