This study tests the relationship between population pressure and social evolution in agricultural societies. The author predicts that population pressure will be positively related to the evolution of descent, political integration, and class stratification. Results support this prediction.

This study examines socio-economic predictors of political complexity. Findings suggest that class stratification is the most significant predictor of political complexity.

This article uses factor analysis to identify the key variables underlying the many cross-cultural associations reported by Textor (1967). Twelve factors are identified.

This study takes an evolutionary approach to understanding cultural development. The author suggests that "the degree of regularity in the relative order of development of any two traits is directly proportional to the evolutionary distance between them." Scale analysis supports this proposition.

This chapter explores and tests some propositions about matrilineal societies. Supplementary to that discussion, the author also explores the problems of method associated with the use of coded data on large samples of 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.

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).

The researchers operationalize new measures of Socially Imposed Monogamy (SIM) and Ecologically Imposed Monogamy (EIM) using scores from Murdock's (1986) Ethnographic Atlas in order to reevaluate Alexander et al.'s (1979) findings that sexual stature dimorphism is higher in SIM (monogamous and highly stratified) and polygynous societies compared to EIM (monogamous and egalitarian) ones. The expected associations between marriage system and sexual dimorphism are not robustly significant; however, an interaction effect is discovered between marriage system and stratification with regard to dimorphism.

The relationships of aggression and crime to variables of childhood experience, adult behavior, and social structure are cross-culturally analyzed.

In this article, the researcher aims to test the usefulness of grid/group theory, developed by anthropologist Mary Douglas, for cross-cultural research. The article utilizes principal component factor analysis on grid/group indicators to test if "grid" and "group" can be considered as sufficiently independent factors, and thus useful for quantitative cross-cultural research.