Physical Quality of Life Index:
The Physical Quality of Life Index (PQLI) was developed by the Overseas Development Council in Washington in the mid-1970s due to dissatisfaction with the use of GNP as an indicator of development. PQLl measures infant mortality, expectation of life at birth and rates of adult literacy as well as other indicators of development such as birth and death rates all equally weighted on a 0 to 100 scale. '['his measure is based on a number of indicators which tell us about the quality of life led by people. However, an accurate assessment of these indicators is based on the quality of data used in the ranking. It is difficult to measure indicators like freedom. participation, environmental health and innovation which are at times included to get a comprehensive measurement of quality of life. PQLl combines literacy rate, infant mortality rate, and life expectancy, using scales from the lowest to the highest values in the global system with equal weights to all three. Based on countrylregion-specific Physical Quality of Life, it is possible to compute world quality of life (WPQLI) and the North-South gap in quality of life (NSPQLI). It is also possible to compute world literacy (WLIT).