This report presents the first ever scientific measurement of the extent and depth of child poverty in developing regions. This measurement is based upon internationally agreed definitions arising from the international framework of child rights. Indicators of severe deprivation of basic human need for shelter, sanitation, safe water, information, health, education and food were constructed using survey data on nearly 1.2 million children in 46 countries collected mainly during the late 1990's. This is the largest, most accurate survey sample of children ever assembled.