Abstract
The coefficient of kinship of the Juangs, a very primitive tribe in the state of Orissa in eastern India, is estimated. The Juang population is sub-divided into two breeding groups: one practising shifting cultivation in the hilly regions of the former state Keonjher and Pal-Lahara, called here "primitive group"; the other settled in Dhenkanal and practising normal Indian agriculture, called here "advanced group". From the migration matrix the mean eoefficient of kinship in a population subdivided by geographically restricted clans is estimated to be 0.0045 for the primitive group and 0.0324 for the advanced group. These values correspond to Alpine and Micronesian isolates, respectively. Estimates from genealogies of randomly paired sibships are substantially smaller (0.0016 and 0.0131, respectively), but are biased downward by incompleteness of pedigrees and by neglect of restricted migration within each group. Therefore the estimates from the migration matrix are presumably more reliable in this material, and perhaps commonly in tribal populations.
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