Polyandry is generally found in areas where difficult physical environments or high populations impose extreme pressures on agricultural systems. It works to limit population growth and to ensure the coherence of agricultural estates. Some theorists suggest that this institutions more often occurs in societies in which women hold relatively high social status (Stone 1997:194). However, it does not reflect the same stratification pattern as polygyny, since a woman’s social position and prestige are not determined by the number of husbands she can amass. Female status is more apparently marked in woman-woman marriage options in polygynous societies.