This chapter examines the relationship between male parental behavior and influences of species, ecological and social factors. The authors first present a cross-phylogenetic perspective on paternal differences between species, then offer two quantitative studies: a comparative study of non-western human societies that correlates father-infant proximity with socioecological factors and another about father-infant proximity among the !Kung.

Researchers looked at 180 of the 186 societies in the SCCS for changes over time in lineage systems. The goal was to estimate the frequency of transitions away from and to matriliny cross-culturally, as well as explore the potential causes of these patterns / transitions. The study focused on two overarching research questions: 1. How common are transitions away from matriliny and how often do ‘reverse transitions’ to matriliny occur? 2. What causes transitions to or from matriliny? Overall, the study found that transitions away from matriliny have been quite common within the time frames covered by the ethnographic samples available, while transitions from another system to matrility have been rare. In answering the second question, the researchers report the highest correlation is between subsistence transitions (towards pastoralism, intensive agriculture, or a market economy) and lineage transitions (away from matriliny) as well as between higher levels of social complexity (measured by stratification, slavery, and population size) and lineage transitions (away from matriliny).

A test of theory that gender assigned to animal characters in folklore will be associated with character traits based on gender status. Post facto theory for findings is presented.

This study analyzes cultural trait transmission among a sample of 172 Western North American Indian societies. The authors use autologistic models built upon spatial and linguistic neighbor graphs to examine the importance of vertical versus horizontal trait transmission. Findings suggest that cultural trait distributions cannot be explained by the transmission of traits from parent to daughter populations and are better analyzed using phylogenies. Authors also show that vertical and horizontal transmission can be incorporated in a single model and may both act upon a single trait. Analysis of only one type of cultural transmission would result in a loss of information.

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.

This study examines the treatment of the aged in different societies. Support was found for the hypothesis that the amount information controlled by the aged is positively associated with the degree of esteem in which they are held by other members of the society.

This chapter examines correlates of gerontrocide. Previously suggested predictors, such as nomadism and harsh climate, were not found to be associated with gerontrocide, but data suggested that several other variables such as social stratification, subsistence type, and rule of descent, are significant predictors.

The relationship between restrictions on premarital sex and the privacy of sexual practices is examined, using the degree of impenetrability of house materials as both a proxy and assumed cause for "offstage" or private sex. The author theorizes that permissive premarital sex norms are a response to open dwelling types which are themselves an adaptation to warm temperatures.

Geophagy during pregnancy has been proposed to fulfill a number of adaptive functions, including relieving gastrointestinal distress, detoxification of the secondary compounds found in plant foods, and providing a supplementary source of minerals such as calcium. Using a sample of 60 African populations, the authors investigate geophagy during pregnancy in a cross-cultural perspective, emphasizing variation between dairying and non-dairying populations.

This study explores predictors of variation in two dimensions of marital residence patterns among hunter-gatherers: 1) the tendency toward patrilocality versus matrilocality and 2) the tendency toward unilocality versus bilocality.