Religious rituals that are painful or highly stressful are hypothesized to be costly signs of commitment essential for the evolution of complex society. Yet few studies have investigated how such extreme ritual practices were culturally transmitted in past societies. Here, we report the first study to analyze temporal and spatial variation in bloodletting rituals recorded in Classic Maya (ca. 2...

Theoretical work predicts that individuals should strategically increase their reliance on social learning when individual learning would be costly or risky, or when the payoffs for individually-learned behaviors are uncertain. Using a method known to elicit cumulative cultural evolution in the laboratory, we investigated the degree of within-group similarity, and between-group variation, in de...

The 1980s witnessed an increased interest among behavior analysts regarding a paradigm in cultural anthropology known as cultural materialism. This perspective suggests that all behavior ultimately rests on the relationship between the natural environment and the methods used to obtain resources needed to maintain survival and a high standard of living, known as the mode of production. While us...

Recent debates about memetics have revealed some widespread misunderstandings about Darwinian approaches to cultural evolution. Drawing from these debates, this paper disputes five common claims: (1) mental representations are rarely discrete, and therefore models that assume discrete, gene-like particles (i.e., replicators) are useless; (2) replicators are necessary for cumulative, adaptive ev...

This paper argues that the economics of the family can be much enriched by incorporating recent developments in evolutionary biology, animal behavior studies, cultural evolution, anthropology, and game theory. Evolutionary foundations of sympathy between relatives are explored. Applications of the theory of cultural evolution to the demographic transition and to wealth transfers between generat...

Scientists have identified a series of milestones in the evolution of the human food quest that are anticipated to have had far-reaching impacts on biological, behavioural and cultural evolution: the inclusion of substantial portions of meat, the broad spectrum revolution and the transition to food production. The foraging shift to dense and predictable resources is another key milestone that h...

This study deals with adherence to tuberculosis treatment among men and women as well as the disease's links and consequences vis-à-vis life styles and treatment outcomes. The ethnographic study was a component of the Tuberculosis Epidemiological Control Project in the city of Pelotas and aimed to identify the reasons patients failed to complete treatment. Direct ethnographic observations and s...

The provisions of the World Trade Organisation Agreement on the Application of Sanitary and Phytosanitary Measures are designed to extend the liberalisation of trade, without increasing the risk to public, animal or plant health. The international standards set by the Office International des Epizooties (OIE) will be used as a benchmark by World Trade Organisation panels and committees when eva...

The notion that the form of a word bears an arbitrary relation to its meaning accounts only partly for the attested relations between form and meaning in the languages of the world. Recent research suggests a more textured view of vocabulary structure, in which arbitrariness is complemented by iconicity (aspects of form resemble aspects of meaning) and systematicity (statistical regularities in...

Stephen Stich Rutgers University Abstract: While we are enthusiastic about a Darwinian approach to culture, we argue that the overview presented in the target article does not sufficiently emphasize the crucial explanatory role that psychology plays in the study of culture. We use a number of examples to illustrate the variety of ways that appeal to psychological factors can help explain cultu...