The Human Development Index (HDI), introduced in the 1990 Human Development Report, is a composite measure of health, education, and income, providing an alternative to purely economic assessments like GDP. It includes dimensions such as life expectancy, education levels, and GNI per capita, with values ranging from 0 to 1 to reflect relative achievement. Additionally, the Gender Inequality Index (GII) and Multidimensional Poverty Index (MPI) measure disparities and deprivations across various dimensions to enhance understanding of human development challenges globally.