Effect of Growth in Gross Domestic Product on Economic Development: A Comparative Study of Nigeria and Germany

Abstract

This paper investigates the relationship between economic growth, measured by gross domestic product (GDP), and economic development, measured primarily by the Human Development Index (HDI), through a comparative analysis of Nigeria and Germany between 1990 and 2023. Guided by modernisation and dependency theories, the study adopts a mixed-methods design that combines descriptive statistics, trend analysis, and institutional interpretation. The findings reveal that Nigeria experienced periods of rapid GDP expansion, particularly during the oil boom years. However, these gains were weakly translated into improvements in human development due to structural dependence, policy volatility, and institutional weaknesses. By contrast, Germany's more modest but stable GDP growth was consistently accompanied by broad-based development outcomes, supported by strong institutions, diversified production, and robust welfare systems. The comparative evidence suggests that the growth–development nexus is context-dependent: while GDP growth can be a driver of development, its effectiveness hinges on structural conditions and institutional capacity.