How does one capture the economic effects of complexity in an economy? And how does this impact economic performance in Sub-Saharan and BRICS economies?

Comparing the GDP per capita measure  reveals that apart from Russia and China, countries are not performing well. Economic complexity affects economic performance, and this research by Thibeka Ncanywa considers how the levels of export market sophistication, and macroeconomic competitiveness are related to improving economies and economic performance. Countries with complex economic structures experience a privileged source of comparative advantage. Sub-Saharan African countries still rely much on exporting raw unprocessed products.