Social power establishes and legitimizes actions for individuals within a society who accept the structures that create that power. Differences in power can develop without strict hierarchies, however. Here, we explore the power differences among groups living in the Mimbres Mogollon region of southwestern New Mexico using bioarchaeological data and a case study from the Harris site, a Late Pithouse period village occupied circa AD 550–1000. Aspects of mortuary practices and supporting archaeological data offer nuanced interpretations of individuals with situational power linked to social practices that both solidified and maintained power by particular households. The power differences documented here are not based on coercion; instead, they are tied to cooperation and engagement with the community. For small-scale communities such as Harris, situational power is interpreted for individuals with access to prime agricultural land and/or ritual, or by association with certain land-holding lineages. This system is consistent with a heterarchical structure that embraced flexibility in the use of power.

Traditionally, reconstructions of social complexity in past societies have relied on a plethora of indicators including, but not limited to, ancient texts, monumental architectural and archaeological evidence for hierarchical leadership, surplus storage, craft specialisation and the density of populations. With the exception of mortuary patterns, particularly the quantity and quality of grave goods, bioarchaeological data have featured less prominently in archaeological interpretation. Over the past 40 years, however, the study of human skeletal remains has been more firmly integrated into theoretical explorations of the past, and the broader development of biocultural models has contributed more fully to archaeological research. The first of the two volumes reviewed here is exemplary of current bioarchaeological approaches that draw on human biology, cultural development and physical environments to understand the human experience.

The Late Pithouse period in the Mimbres Mogollon region of southwestern New Mexico was a dynamic time during which many social changes occurred. One of the more significant of these changes appears to be related to the role of land-holding kin groups at some of the larger pithouse sites. We present bioarchaeological data from our recent excavations at the Harris Site in the Mimbres River Valley to illustrate that certain kin groups were gaining social power compared to others in the village. We discuss the reasons for these power differentials and the implications that they have for understanding the myriad other social changes occurring valley-wide at the end of the Pithouse period.