Human Development Index (HDI) : It makes rating of all countries on a scale of 0 to 1. 0 indicates lowest human development and 1 indicates highest human development. Two important points abour HDI are It measures relative and not absolute level of human development. The main emphasis of HDI is on goals, i.e. longevity, knowledge and standard of living (expressed in real per capita income). Who Prepares HDI : United Nations Development Programme (UNDP) has since 1990 been preparing HDI.