The author builds upon previous research (Winkelman 1998) to further elucidate the cross-cultural predictors of institutionalized human sacrifice. The author considers a range of ecological factors and political variables, particularly geopolitical dynamics and intra- and inter-group relations. Other factors were explored, including social complexity and social structures. The author identifies the lack of an effective superordinate political authority as a main determinant in similar behaviors contemporarily (e.g. suicide bombers, beheadings, public brutality in civil war).

This article offers a detailed analysis of neuropsychopsiological processes involved in altered states of consciousness (ASC) in order to design and evaluate a psychophysiological model of trance states. Cross-cultural hypotheses concerning ASC are tested.

This article offers a detailed analysis of neurophysiological processes involved in altered states of consciousness. Cross-cultural hypotheses concerning altered states of consciousness are tested.

The authors examine the relationship between magico-religious practitioner type and socioeconomic variables in order to present a typology of magico-religious practitioners. Three bases for magico-religious practitioners are discussed in terms of selection procedures and activities. Several hypotheses are empirically tested, and descriptive generalizations derived from analyses are presented.

This article examines shamans and other types of magico-religious healers. Agriculture and political integration are suggested to influence the transformation of shamans into shaman/healers, healers, or possession-trance mediums.

This study tests cross-cultural hypotheses that predict the variables that lead to drunkenness. Previous hypotheses are reviewed and retested and control tests attempt to ascertain the adequacy of the cross-cultural method.

The dissertation in its entirety is an archaeological investigation of population aggregation among the Mesa Verde region Anasazi A.D. 900-1300. Chapters four and five of Adlers larger work focus on cross-cultural perspectives to inform discussion around resource access and community strength. Multiple different hypotheses were tested with different data sets, but the HRAF database and Standard Cross Cultural Sample were used throughout.

The social control hypothesis suggests that ritual human sacrifice may have played an important role in the evolution of social stratification, functioning to legitimize class-based power distinctions by pairing displays of ultimate authority with supernatural justifications. Authors test this hypothesis about human sacrifice with a phylogenetic analysis of 93 Austronesian cultures.

This study tests a broad hypothesis that alcohol is employed to relieve anxiety and feelings of powerlessness. Frequency of drunkenness and drunken brawling were associated with several variables, including supernatural beliefs, political systems, settlement patterns, and division of labor.

This study retests the data presented by Sillitoe (1977) in his study of the relationship between likelihood of warfare and population density in New Guinea. Contrary to Sillitoe, the author finds a strong and significant association between the two variables. The author also finds a significant relationship between the severity of food shortages and the frequency of warfare cross-culturally.