\ Global Youth Development Index and Report 2016 upper-middle income, lower-middle income and low income. High-income countries tend to be very high YDI countries and low-income countries tend to be have low YDI scores. Only one country in the YDI top 30, Costa Rica, is not classified as high income. Costa Rica is an upper-middle-income country. YDI has three primary indicators, each of which is weighted at 10 per cent in the composite index. The primary YDI indicators are analogous to the HDI dimensions. Conceptually, this reflects the fact that without strong performance in these three crucial areas it is not possible to achieve high standards in youth development. An important difference between the two indexes is the inclusion of the domains of Civic Participation and Political Participation in the YDI. Figure 2.24 shows how the YDI is strongly correlated with but does not exactly mirror the HDI. 2.7 Youth Development Index and Human Development Index The HDI is a summary measure of average achievement in key dimensions of human development: a long and healthy life, adequate education and a decent standard of living. It is an important universal measure of human development and progress, which recognises that all levels of development depend heavily on these three critical elements. Comparing YDI and HDI scores yields some useful insights. Analysing the difference in ranks on the YDI and HDI at a regional level suggests that youth development in South Asia, Central America and Caribbean, Asia-Pacific and South America is high in comparison with the overall level of human development. The MENA region, Russia and Eurasia, North America and Sub-Saharan The YDI complements the HDI, with a specific focus on the development of young people. The Figure 2.24  Comparison of the 2016 YDI and 2015 HDI scores Low development 200 NER 180 GAB 160 IRQ UGA 140 SYC 2016 YDI Rank 120 LBR CHN RUS FJI BLZ 100 BRA PHL 80 NPL R=0.87 GRC PER 60 High development 58 JAM SGP BHR COL 40 USA MLT 20 PRT GBR 0 0 20 High development Source: Commonwealth Secretariat 40 60 80 100 2015 HDI rank 120 140 160 180 Low development 200