AbstractEthnoarchaeological data from contemporary Wanka villages in the Mantaro Valley of the Peruvian Andes provide new perspectives on the use and discard of ceramic cooking vessels. We present a regional survey of ceramic vessel use and discard with household consumption as the focus of study. A mathematical model determines vessel uselife from the age distribution of in-use vessels. We examine the number of vessels per household, their volume, their uselife, and their reported discard. A typical Wanka household cooking vessel assemblage consists of four or five ollas, two large ollas, one chata, and one tostadera. As family members are added to a household, the number of household ollas slightly increases, as does olla volume and the overall rate of olla discard. Large families have fewer chatas, and the rate of chata discard is uncorrelated with household size. Large and small families alike have only one tostadera, but in large families, a shortened tostadera uselife increases their discard rate. Distributing the same population into small or large households will result in significantly different rates of total sherd accumulation. Bulk sherd accumulation is a better indicator of the number of households rather than of the total number of persons. Household size can be estimated from the relative proportions of discarded ollas, chatas, and tostaderas.
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