CORE Why development measurement uses more than GDP
Development is measured through a set of lenses because no single number captures income, capability, deprivation and inequality together. GDP at market prices records the value of final goods and services; GNI adjusts income by net factor income from abroad; NNP subtracts depreciation. These aggregates are essential for national-income accounting, but they do not show whether a household has schooling, nutrition, safe housing or health access. Human Development Index (HDI) 2023-24 — India, National Multidimensional Poverty Index (MPI) 2023, Household Consumption Expenditure Survey (HCES) 2022-23 and Gini Coefficient and Lorenz Curve — India therefore sit beside GDP in a serious development reading. Rajasthan shows the same need for multiple measures. A district may record rising construction and mining output, while the state still has to watch school completion, child nutrition, drinking water, women workers, tribal deprivation and the rural-urban consumption gap. Rajasthan's SDG India Index 2023-24 score of 67 and its MPI headcount decline from 28.93% in 2015-16 to 15.31% in 2019-21 measure different parts of the same development story. Growth raises the resource base, but HDI, MPI, HCES and Gini tell whether that resource base is changing lives. Real GDP, nominal GDP and per capita income answer output questions; HDI answers capability questions; MPI answers simultaneous deprivation questions; HCES answers consumption-level questions. This separation is the main discipline in the topic. The welfare conclusion should be built from a bundle, not from a headline aggregate. A credible state profile checks whether income growth is broad-based, whether consumption improves in poorer fractiles, whether girls remain in school, whether health gains reach remote hamlets, whether water and sanitation reduce avoidable disease, and whether inequality widens while averages improve. These questions keep economic measurement connected to lived development.