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The bifocal stance theory (BST) of cultural evolution has prompted a wide-ranging discussion with broadly three aims: to apply the theory to novel contexts; to extend the conceptual framework; to offer critical feedback on various aspects of the theory. We first discuss BST's relevance to the diverse range of topics which emerged from the commentaries, followed by a consideration of how our framework can be supplemented by and compared to other theories. Lastly, the criticisms that were raised by a subset of commentaries allow us to clarify parts of our theory. [ABSTRACT FROM AUTHOR]

Cultural evolution depends on both innovation (the creation of new cultural variants by accident or design) and high-fidelity transmission (which preserves our accumulated knowledge and allows the storage of normative conventions). What is required is an overarching theory encompassing both dimensions, specifying the psychological motivations and mechanisms involved. The bifocal stance theory (BST) of cultural evolution proposes that the co-existence of innovative change and stable tradition results from our ability to adopt different motivational stances flexibly during social learning and transmission. We argue that the ways in which instrumental and ritual stances are adopted in cultural transmission influence the nature and degree of copying fidelity and thus also patterns of cultural spread and stability at a population level over time. BST creates a unifying framework for interpreting the findings of otherwise seemingly disparate areas of enquiry, including social learning, cumulative culture, overimitation, and ritual performance. We discuss the implications of BST for competing by-product accounts which assume that faithful copying is merely a side-effect of instrumental learning and action parsing. We also set out a novel "cultural action framework" bringing to light aspects of social learning that have been relatively neglected by behavioural ecologists and evolutionary psychologists and establishing a roadmap for future research on this topic. The BST framework sheds new light on the cognitive underpinnings of cumulative cultural change, selection, and spread within an encompassing evolutionary framework. [ABSTRACT FROM AUTHOR]

Human rituals exhibit bewildering diversity, from the Mauritian Kavadi to Catholic communion. Is this diversity infinitely plastic or are there some general dimensions along which ritual features vary? We analyse two crosscultural datasets: one drawn from the anthropological record and another novel contemporary dataset, to examine whether a consistent underlying set of latent dimensions in ritual structure and experiences can be detected. First, we conduct a factor analysis on 651 rituals from 74 cultural groups, in which 102 binary variables are coded. We find a reliable set of dimensions emerged, which provide potential candidates for foundational elements of ritual form. Notably, we find that the expression of features associated with dysphoric and euphoric experiences in rituals appears to be largely orthogonal. Second, we follow-up with a pre-registered factor analysis examining contemporary ritual experiences of 779 individuals from Japan, India and the US. We find supporting evidence that ritual experiences are clustered in relatively orthogonal euphoric, dysphoric, frequency and cognitive dimensions. Our findings suggest that there are important regularities in the diversity of ritual expression and experience observed across both time and culture. We discuss the implications of these findings for cognitive theories of ritual and cultural evolution. This article is part of the theme issue 'Ritual renaissance: new insights into the most human of behaviours'. [ABSTRACT FROM AUTHOR]

This article introduces the "Seshat: Global History" project, the methodology it is based upon and its potential as a tool for historians and other humanists. Seshat is a comprehensive dataset covering human cultural evolution since the Neolithic. The article describes in detail how the Seshat methodology and platform can be used to tackle big questions that play out over long time scales whilst allowing users to drill down to the detail and place every single data point both in its historic and historiographical context. Seshat thus offers a platform underpinned by a rigorous methodology to actually do longue durée history and the article argues for the need for humanists and social scientists to engage with data driven longue durée history. The article argues that Seshat offers a much-needed infrastructure in which different skill sets and disciplines can come together to analyze the past using long timescales. In addition to highlighting the theoretical and methodological underpinnings, Seshat's potential is demonstrated using three case studies. Each of these case studies is centred around a set of longstanding questions and historiographical debates and it is argued that the introduction of a Seshat approach has the potential to radically alter our understanding of these questions. [ABSTRACT FROM AUTHOR]

As the study of human cultural evolution matures, field sites will increasingly have a role to play, just as they have in the study of genetic and cultural evolution in nonhuman species. Progress, however, may not be easy due to complex intellectual histories and disciplinary norms. Cultural anthropology and sociology, the two most field-oriented disciplines in the human behavioral sciences, have been among the most avoidant of evolutionary theory. In other branches of the human behavioral sciences, the bulk of research is conducted on college students in the laboratory without any reference to their cultures or everyday lives. The newly formed Cultural Evolution Society (CES) is in a unique position to facilitate the creation of field sites around the world. The Social Evolution Forum is therefore pleased to feature two essays on the topic by David Sloan Wilson, an evolutionary biologist by training, and Harvey Whitehouse, a social anthropologist by training. Together with commentaries by authors with diverse perspectives on field research, we hope to catalyze the formation of field sites for the study of cultural evolution around the world. [ABSTRACT FROM AUTHOR]

The article presents the research that investigates the important role of rituals in the complexity of social evolution.

The vast amount of knowledge about past human societies has not been systematically organized and, therefore, remains inaccessible for empirically testing theories about cultural evolution and historical dynamics. For example, what evolutionary mechanisms were involved in the transition from the small-scale, uncentralized societies, in which humans lived 10,000 years ago, to the large-scale societies with an extensive division of labor, great differentials in wealth and power, and elaborate governance structures of today? Why do modern states sometimes fail to meet the basic needs of their populations? Why do economies decline, or fail to grow? In this article, we describe the structure and uses of a massive databank of historical and archaeological information, Seshat: The Global History Databank. The data that we are currently entering in Seshat will allow us and others to test theories explaining how modern societies evolved from ancestral ones, and why modern societies vary so much in their capacity to satisfy their members' basic human needs. [ABSTRACT FROM AUTHOR]

Agricultural productivity, and its variation in space and time, plays a fundamental role in many theories of human social evolution. However, we often lack systematic information about the productivity of past agricultural systems on a large enough scale in order to be able to test these theories properly. The effect of climate on crop yields has received a great deal of attention resulting in a range of empirical and process-based models, yet the focus has primarily been on current or future conditions. In this paper, we argue for a "bottom-up" approach that estimates productivity, or potential productivity based on information about the agricultural practices and technologies used in past societies. Of key theoretical interest is using this information to estimate the carrying capacity of a given region, independently of estimates of population size. We outline how explicit crop yield models can be combined with high quality historical and archaeological information about past societies, in order to infer the temporal and geographic patterns of change in agricultural productivity and potential. We discuss the kinds of information we need to collect about agricultural techniques and practices in the past, and introduce a new databank initiative we have developed for collating the best available historical and archaeological evidence. A key benefit of our approach lies in making explicit the steps in the process of estimating past productivities and carrying capacities, and in being able to assess the effects of different modelling assumptions. This is undoubtedly an ambitious task, yet promises to provide important insights into fundamental aspects of past societies, and will enable us to test more rigorously key hypotheses about human socio-cultural evolution. [ABSTRACT FROM AUTHOR]

The author discusses aspects of the insights of writer David Sloan Wilson about cultural evolution. He states that Wilson's essay offers an exciting discussion concerning cultural evolution. He mentions that the cultural transformation which resulted from major religions may not been selected in Darwinian sense. He adds that cultural group selection may be a major feature of conflict among groups where territoriality and sedentarism may contribute to the process of group selection.

Abstract: Efforts to account for the emergence of large-scale cooperative human societies have focused on a range of cultural advances, from the advent of agriculture to the emergence of new forms of political regulation and social identification. Little attention has been accorded to the role of writing and recordkeeping in cultural evolution. Recent insights garnered here from behavioural economics, palaeography, grammatology, evolutionary psychology, and anthropology suggest that writing and recordkeeping helps to solve the problem of cooperation in large groups by transcending the severe limitations of our evolved psychology through the elaboration of four cooperative tools – (1) reciprocal behaviours, (2) reputation formation and maintenance, (3) social norms and norm enforcement, and (4) group identity and empathy. [Copyright &y& Elsevier]