Processual models of the early state envisioned hierarchical societies with stable social and political structures. More recent research, however, has questioned this vision. Here, the authors explore Middle Horizon (AD 700–1000) Wari state iconography to provide an example of early state social and political organisation from the Central Andes. Social network analysis (SNA) of human figures (‘agents’) depicted in Wari art identifies links between individual agents, as visualised on objects and between the objects’ findspots. The results suggest that the Wari state was more heterarchical than previously imagined. Similar applications of SNA could be used to explore the iconographic evidence of other early, pre-literate states around the world.

Kani Shaie is a small archaeological site in the Kurdistan Region of Iraq, centrally located in the Bazian Basin, a narrow valley at the western edge of the Zagros Mountains along the major route between Kirkuk and Sulaymaniyah. Its main mound was inhabited almost continuously from the fifth to the middle of the third millennium, c. 5000–2500 B.C.E. This period of Mesopotamian prehistory, corresponding to the Chalcolithic and Early Bronze Age, witnessed major transformations such as initial urbanism and intensification of interregional interaction networks. The recent resurgence of fieldwork in the Kurdistan Region of Iraq is beginning to reveal local trajectories that do not always match the established chronological framework, which is largely based on changes in ceramic technology and styles observed in northern Mesopotamia. Here, we discuss the ceramic sequence retrieved from a step trench at Kani Shaie spanning the entire Late Chalcolithic (c. 4600–3100 B.C.E.). A bottom-up approach to potting traditions at the site allows an initial assessment of the relationship between local communities in the Zagros foothills and large-scale developments in the Mesopotamian world. We argue that the evidence from Kani Shaie reflects a long process in which different communities of practice made active choices of adopting, adapting, or rejecting non-local cultural practices.

This study examined the relations between risk cognitions and risk behavior. Adolescents’ perceptions of the risks associated with driving after drinking (DAD) and their perceptions of the prevalence of this behavior among their peers were assessed, and these perceptions were used to predict their DAD behavior. Results provided evidence of a type of cognitive social influence: the more common adolescents thought the behavior was, the less risk, both personal and general, they attributed to it. As expected, however, this relation was significant only for those who were high in a tendency to engage in social comparison. Perceptions of risk, in turn, were prospectively related to risk behavior for all participants. Specifically, low perceived risk, especially personal risk, was associated with an increase in DAD behavior. Implications of the results for DAD interventions are discussed.