 Government policies aim at reducing this inequality by reservation, quota for backward classes, but paradoxically also have created an incentive to keep this stratification alive.The Indian government officially recognises historically discriminated communities of India such as the untouchables under the designation of Scheduled Castes, and certain economically backward castes as Other Backward Class.Leonard and Weller have surveyed marriage and genealogical records to study patterns of exogamous inter-caste and endogamous intra-caste marriages in a regional population of India in 1900–1975.