Using a sample of 80 Austronesian societies from the Ethnographic Atlas, the study applies phylogenetic comparative methods to explore the transmission of cultural traits. The authors follow the research question: "for each possible cultural trait in each society, does the geographical (GNN) or phylogenetic nearest neighbor (PNN) best predict the state of the cultural trait?". Cultural traits in the realms of social organization, kinship, marriage, and subsistence were examined. The results show that PNN predicted slightly more traits in comparison to GNN, but there was not much variation between the different economic and social traits. In addition, 43-48% of traits were not predicted by GNN or PNN.

This exploratory study seeks to explain cassava production and processing in Africa by considering cultural, agronomic, and environmental data. After examining the descriptive results of the agricultural and social contexts of cassava use, the authors build upon Boserup's population density model (1965) to analyze their own hypothesized model of cassava's importance among the sampled societies.

Aiming to respond to the question "How has knowledge in forager oral narrative been maintained accurately for dozens of generations?", this study explores the myth transmission rules among forager societies. The first hypothesis anticipates that these rules constrain transmission and contexts similarly across forager societies. The authors suggest that these rules are information technology aids to minimize the chances of errors and loss of information. Related to this, the authors formulate eight hypotheses of what these rules will mandate during myth transmission: 1) skilled storytellers to pass down stories, 2) minimal low-distractions, 3) numerous people 4) multiple generations, 5) measures that identify and correct mistakes, 6) measures that maintain the audience's attention, 7) measures that sanction rule violations, and 8) measures that encourage rule compliance. There is enough evidence to support 7 out of the total of 9 hypotheses. These results show the relevance of studying the rules concerning myth and knowledge transmission across generations.

The authors examine correlations between slavery and variables that can potentially be detected archaeologically. The authors do not test specific hypotheses, but aim to explore the variables in a broader sense. As such, the authors use a grounded theory approach to data analysis in order to examine trends that emerge from the data itself.

Social scientists are equivocal as to the importance of teaching (as contrasted with other forms of learning) in traditional societies. While many cultural anthropologists have downplayed the importance of teaching, cognitive psychologists often argue that teaching is a salient human universal. Here the authors investigate cultural transmission among 23 hunter-gatherer populations to explore the relative importance of teaching among foragers.

The author evaluates predictions from the standard model of intensification of food production and suggests it be rejected based on an analysis of 40 societies. The standard model proposes that food producers will increase their energy input until the maximum possible output is achieved, at which point output and labor productivity will fall and producers will invent or adopt new technologies. He then proposes a different model, which he terms the cultural niche construction model. The cultural niche construction model proposes that societies will minimize their energy input while maximizing their returns through continual technological adaptation and niche construction. After predictions from this second model are tested, the author suggests tentatively accepting the cultural niche construction model as a new framework to explain transitions to complex societies.

The researchers develop and compare two evolutionary models to evaluate the association between social stratification and female genital modification(FGMo) in a cross-cultural African sample, theorizing that social hierarchy creates competition for high-value males in which FGMo acts as a costly demonstration of paternity certainty. Although the null model outperforms the stratification model when applied to empirical data, an association between FGMo and stratification is found in the expected direction. The authors suggest that while stratification may be an important factor in the de novo origins of FGMo, spread and persistence of the practice subsequently become more heavily dependent on other selective forces.

This paper examines patterns of cultural learning in pastoralist societies and compares them to those found in hunter-gatherer societies. The study analyzed 198 texts from 13 pastoralist cultures in the eHRAF World Cultures database and found that most cultural skills and knowledge were acquired in early childhood, with parents and non-parental adults as the primary sources of transmission. Teaching was the most common form of learning across all age groups, with minimal variation in transmission between different age groups. While similarities were found between the cultural learning patterns of pastoralists and hunter-gatherers, pastoralists were less likely to mention learning from peers and more likely to mention learning via local enhancement and stimulus enhancement. The importance of teaching did not increase with age in pastoralist societies, unlike in hunter-gatherer societies.

Genetic, linguistic, and geographic data can be used to explain the distribution of cultural units ("semes") and to understand the evolutionary mechanisms of culture. Three broad models of cultural transmission attempt to explain why cultures share semes: (1) Cultural diffusion, emphasizing horizontal transmission. (2) Local adaptation, where trail-and-error learning leads to the independent adoption of semes by different peoples living in similar environments. (3) Demic diffusion, which emphasizes vertical and frequency-dependent transmission. Authors test the explanatory power of each model using cultural, genetic, linguistic and geographic data from 36 African cultures.

This study explores the ways in which human deception has evolved using a sample of 145 societies from eHRAF. After noticing that most research has focused just on tactical deception on humans, this study delved into the categorization and prevalence of human aggressive mimicry. The authors suggest that deception evolved from the context of directing it toward prey. The presence of human aggressive mimicry supports that this is a near-universal cross-cultural practice among hunter-gatherers and the authors highlight the importance of further research on human-nonhuman interactions. The authors posit that this hypothesis could serve as a link between the Social Brain Hypothesis and the Foraging Brain Hypothesis.