This study examines relationships among the instruction of children, household type and size, and political integration. Particular attention is paid to type of instruction--whether the instructor is kin or non-kin, and whether the instruction requires a change in the child's residence. Different types of instruction are theorized to solve problems for children in different household types (e.g. children in mother-child households experience gender identity conflict, and so leave their houses for instruction from non-kin). The causality between instruction and societal complexity is also discussed.

This study relates the type of games present in a society to the level of cultural complexity. Authors use a "game-type combination scale" that categorizes societies as having: 1) games of physical skill only; 2) games of physical skill and games of chance; and 3) games of physical skill, games of chance, and games of strategy. Results show a relationship between the game-type combination scale and indicators of cultural complexity.

This study tests the hypothesis that humans tend to transmit wealth to male heirs where polygyny is possible. The results support this hypothesis.

This study explores ecological reasons that might explain why boys are mostly circumcised in tropical regions, particularly in Africa and the insular Pacific. The author postulates a long causal chain linking: 1) tropical climate to the growing of root and fruit crops; 2) the need to keep babies on mother's milk for as long as possible where the adult diet is lacking in protein; 3) a long post-partum sex taboo as a way to space births; 4) the practice of polygyny (and associated mother-child sleeping) in the face of a long sex taboo; 5) patrilocal residence; and 6) male initiation ceremonies which are believed to result from the combination of mother-child sleeping, the long poast-partum sex taboo and patrilocal residence.

This article examines the relationship between inheritance and paternity certainty. Results indicate an "association between relatively frequent female extramarital sex and a cultural norm that allows men to designate heirs whose relatedness is relatively unaffected by low probability of paternity."

This article examines the relationship between water scarcity and morally concerned high gods. Analysis supported this association. Implications of this cross-cultural finding are discussed.

This article provides a new explanation of matrilineal inheritence and paternity certainty, suggesting that matrilineal inheritance is most advantageous for women and can be described as a grandmaternal strategy. Results suggest a strong relationship between matrilineal inheritance and moderate to low probability of paternity, and an even stronger relationship between patrilineal inheritance and high probability of paternity.

This study examines the relative reproductive benefits of different types of inheritance strategies. The author argues that, on the basis of the chromosomal corollary, a male's reproductive fitness will be most enhanced if his wealth transfers to his son and his son's son rather than to his daughter. Results from previous cross-cultural studies are provided in support of this hypothesis.

This chapter examines the variables that are associated with the evil eye belief cross-culturally. Results suggest that the evil eye belief is significantly associated with various socioeconomic and demographic variables. All hypotheses are supported.

This article examines the relationships between game types (physical, strategy, and chance) and social, religious, and geographic variables. Hypotheses are supported.