This article examines possible environmental predictors of ethnic diversity around the world. Results suggest that global ethnic diversity is associated with latitude, habitat diversity, pathogen stress, and climate.

This book discusses the characteristics of adolescence cross-culturally and examines the differences in the adolescent experience for males and females. Several relationships are tested in order to gain an understanding of cross-cultural patterns in adolescence.

This article investigates child socialization toward obedience and conformity as a function of the supervision that parents experience in their own lives. Measures of economic, familial, political, and religious supervision in parents' lives are examined.

This study examines predictors of the type of conflict management used at the community level. Results suggest that level of political integration is associated with mode of conflict management.

What causes people to trust or distrust others? Through a multi-level empirical analysis, the authors of this article find that societies with historical exposure to infectious diseases will tend to minimize contact with contaminated out-groups while strengthening in-group relationships to manage infections, thus developing a lower radius of trust.

This article focuses on the relationship between the use of physical punishment during child socialization and the amount of supervision that adults experience. The authors analyze data using a path analysis which suggests that the greater the valuation of conformity relative to self-reliance, the greater the use of physical punishment during child socialization. Precursors of conformity are also suggested.

This article examines structural and dispositional explanations for complexity of political institutions. Analysis suggests that both socioeconomic organization and socialization variables are useful in understanding the concentration, specialization, and centralization of political power, but socioeconomic organization variables have stronger associations.

In this article the researcher conducted five different studies on in-group or "we-group" vs out-group or "they-group" discrimination practices. Two previous hypotheses are re-examined, the pathogen stress hypothesis and the rice-wheat hypothesis, in order to explain heightened ingroup-outgroup differentiation, before turning to overarching geographical hypothesis. Each of the five studies look at a different group of societies cross-culturally, ending in an index of intergroup discrimination by individuals across 222 countries in study 5. All five studies conclude that differentiation between us and them varies based on geographical location and more specifically, along latitude.

This article offers a behavioral ecological approach to the study of child training practicies. Gender differences in child training are discussed in light of evolutionary theory, and the author suggests training is likely tailored to promote the reproductive success of each gender. Generally, boys are trained to be more aggressive, stronger, and self-reliant; girls are trained to be more hard-working, responsible, obedient, and sexually restrained. Gender differences in child training frequently vary with degree of polygyny and/or social stratification in a society.

This chapter investigates correlates of competitive adolescent games, focusing on societal and family characteristics as well as socialization variables and personality traits. Data suggest that games meant to encourage competitiveness will be more common for boys than for girls. Competitive games are also statistically associated with low societal and technological complexity, small and monogamous family organization, less physical contact and comfort in infant socialization, less integration in adult activities, and various personality traits.