Empirical foundations for an integrated study of language evolution

2020 ◽  
Vol 10 (2) ◽  
pp. 188-229
Author(s):  
Gareth Roberts ◽  
Betsy Sneller
Keyword(s):  
Cultural Evolution ◽  
Language Change ◽  
Language Evolution ◽  
Population Level ◽  
Similar Role ◽  
Level Change ◽  
Evolutionary Study ◽  
Cultural Evolutionary ◽  
Radical Shift ◽  
Integrated Study

Abstract Half a century ago, Uriel Weinreich, William Labov, and Marvin Herzog laid out a programmatic vision for the study of language change. This included establishing five fundamental problems for the field and a radical shift from a focus on idiolects to a focus on population-level change (grounded in their concept of orderly heterogeneity). They also expressed an explicit desire to see an integrated evolutionary study of language change. In spite of this, the newer fields of language evolution and cultural evolution make little contact with the field of sociolinguistics that emerged out of their work. Here we lay out a program, grounded in their five problems, for a more integrated future. We situate each problem in modern sociolinguistics and identify promising points for theoretical exchange, making comparisons with Tinbergen’s four questions, which play a similar role in the evolutionary sciences. Finally, we propose cultural-evolutionary experiments for making empirical progress.

scholarly journals Variation is the universal: making cultural evolution work in developmental psychology

2018 ◽  
Vol 373 (1743) ◽  
pp. 20170059 ◽  
Author(s):  
Michelle Ann Kline ◽  
Rubeena Shamsudheen ◽  
Tanya Broesch
Keyword(s):  
Cultural Evolution ◽  
Developmental Psychology ◽  
Population Level ◽  
Interdisciplinary Studies ◽  
Cultural Research ◽  
Cross Cultural Research ◽  
Cultural Evolutionary ◽  
Geographical Scope ◽  
Cultural Gaps

Culture is a human universal, yet it is a source of variation in human psychology, behaviour and development. Developmental researchers are now expanding the geographical scope of research to include populations beyond relatively wealthy Western communities. However, culture and context still play a secondary role in the theoretical grounding of developmental psychology research, far too often. In this paper, we highlight four false assumptions that are common in psychology, and that detract from the quality of both standard and cross-cultural research in development. These assumptions are: (i) the universality assumption , that empirical uniformity is evidence for universality, while any variation is evidence for culturally derived variation; (ii) the Western centrality assumption , that Western populations represent a normal and/or healthy standard against which development in all societies can be compared; (iii) the deficit assumption , that population-level differences in developmental timing or outcomes are necessarily due to something lacking among non-Western populations; and (iv) the equivalency assumption , that using identical research methods will necessarily produce equivalent and externally valid data, across disparate cultural contexts. For each assumption, we draw on cultural evolutionary theory to critique and replace the assumption with a theoretically grounded approach to culture in development. We support these suggestions with positive examples drawn from research in development. Finally, we conclude with a call for researchers to take reasonable steps towards more fully incorporating culture and context into studies of development, by expanding their participant pools in strategic ways. This will lead to a more inclusive and therefore more accurate description of human development. This article is part of the theme issue ‘Bridging cultural gaps: interdisciplinary studies in human cultural evolution’.

scholarly journals Using Models to Predict Cultural Evolution From Emotional Selection Mechanisms

2019 ◽  
Vol 12 (2) ◽  
pp. 79-92
Author(s):  
Kimmo Eriksson ◽  
Pontus Strimling
Keyword(s):  
Empirical Research ◽  
Cultural Evolution ◽  
Empirical Studies ◽  
Population Level ◽  
Research Paradigm ◽  
Modeling Framework ◽  
Level Change ◽  
Selection Mechanisms ◽  
Directing Attention

Cultural variants may spread by being more appealing, more memorable, or less offensive than other cultural variants. Empirical studies suggest that such “emotional selection” is a force to be reckoned with in cultural evolution. We present a research paradigm that is suitable for the study of emotional selection. It guides empirical research by directing attention to the circumstances under which emotions influence the likelihood that an individual will influence another individual to acquire a cultural variant. We present a modeling framework to translate such knowledge into specific and testable predictions of population-level change. A set of already analyzed basic cases can serve as a toolbox.

EDITORIAL — CULTURAL EVOLUTION IN SPATIALLY STRUCTURED POPULATIONS: A REVIEW OF ALTERNATIVE MODELING FRAMEWORKS

2012 ◽  
Vol 15 (01n02) ◽  
pp. 1203001 ◽  
Author(s):  
ANNE KANDLER ◽  
CHARLES PERREAULT ◽  
JAMES STEELE
Keyword(s):  
Cultural Evolution ◽  
Evolutionary Dynamics ◽  
Diffusion Theory ◽  
Population Level ◽  
Structured Populations ◽  
Macro Level ◽  
Agent Based ◽  
Spatially Structured Populations ◽  
Cultural Evolutionary ◽  
Spatially Explicit Modeling

We consider the dynamics of cultural evolution in spatially-structured populations. Most spatially explicit modeling approaches can be broadly divided into two classes: micro- and macro-level models. Macro-level models study cultural evolution at the population level and describe the average behavior of the considered system. Conversely, micro-level models focus on the constituent units of the system, and study the evolutionary dynamics that emerge out of the interaction between these units. In this paper, we give an overview of the general properties of micro- and macro-level models using the examples of agent-based simulations and of continuum models based in diffusion theory; we highlight how both frameworks account for spatially-dependent processes. We argue that both micro- and macro-level models are well-suited to describe the process of cultural evolution in spatial settings and stress that micro- and macro-level models should not be considered as competing alternatives, but rather as complementary tools that can provide different insights into cultural evolutionary dynamics. Although adding spatial components to any model increases its complexity, we argue (based on the findings presented by contributors to this Special Issue of Advances in Complex Systems), that the incorporation of space into the evolutionary framework is a necessary step towards a more complete understanding of the process of cultural evolution.

scholarly journals Conversation, cognition and cultural evolution

2017 ◽  
Vol 18 (3) ◽  
pp. 402-442 ◽  
Author(s):  
Seán G. Roberts ◽  
Stephen C. Levinson
Keyword(s):  
Structural Properties ◽  
Language Processing ◽  
Cultural Evolution ◽  
Stable Distribution ◽  
Language Change ◽  
Language Evolution ◽  
Actual Distribution ◽  
Content Type ◽  
Language Typology ◽  
Agent Based

This paper outlines a first attempt to model the special constraints that arise in language processing in conversation, and to explore the implications such functional considerations may have on language typology and language change. In particular, we focus on processing pressures imposed by conversational turn-taking and their consequences for the cultural evolution of the structural properties of language. We present an agent-based model of cultural evolution where agents take turns at talk in conversation. When the start of planning for the next turn is constrained by the position of the verb, the stable distribution of dominant word orders across languages evolves to match the actual distribution reasonably well. We suggest that the interface of cognition and interaction should be a more central part of the story of language evolution.

scholarly journals Maintenance of prior behaviour can enhance cultural selection

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bradley Walker ◽  
José Segovia Martín ◽  
Monica Tamariz ◽  
Nicolas Fay
Keyword(s):  
Cultural Evolution ◽  
Learning Strategy ◽  
Critical Evaluation ◽  
Experimental Studies ◽  
Population Level ◽  
Agent Based ◽  
Cultural Selection ◽  
Agent Based Modelling ◽  
Cultural Evolutionary

AbstractMany cultural phenomena evolve through a Darwinian process whereby adaptive variants are selected and spread at the expense of competing variants. While cultural evolutionary theory emphasises the importance of social learning to this process, experimental studies indicate that people’s dominant response is to maintain their prior behaviour. In addition, while payoff-biased learning is crucial to Darwinian cultural evolution, learner behaviour is not always guided by variant payoffs. Here, we use agent-based modelling to investigate the role of maintenance in Darwinian cultural evolution. We vary the degree to which learner behaviour is payoff-biased (i.e., based on critical evaluation of variant payoffs), and compare three uncritical (non-payoff-biased) strategies that are used alongside payoff-biased learning: copying others, innovating new variants, and maintaining prior variants. In line with previous research, we show that some level of payoff-biased learning is crucial for populations to converge on adaptive cultural variants. Importantly, when combined with payoff-biased learning, uncritical maintenance leads to stronger population-level adaptation than uncritical copying or innovation, highlighting the importance of maintenance to cultural selection. This advantage of maintenance as a default learning strategy may help explain why it is a common human behaviour.

scholarly journals Cultural Evolution of Genetic Heritability

2021 ◽  
pp. 1-147
Author(s):  
Ryutaro Uchiyama ◽  
Rachel Spicer ◽  
Michael Muthukrishna
Keyword(s):  
Cultural Evolution ◽  
Evolutionary Dynamics ◽  
Behavioral Genetics ◽  
Social Contexts ◽  
Genetic Effects ◽  
Genetic Heritability ◽  
Innovation And Diffusion ◽  
Nuanced Understanding ◽  
Cultural Evolutionary ◽  
The Life Course

Abstract Behavioral genetics and cultural evolution have both revolutionized our understanding of human behavior—largely independent of each other. Here we reconcile these two fields under a dual inheritance framework, offering a more nuanced understanding of the interaction between genes and culture. Going beyond typical analyses of gene–environment interactions, we describe the cultural dynamics that shape these interactions by shaping the environment and population structure. A cultural evolutionary approach can explain, for example, how factors such as rates of innovation and diffusion, density of cultural sub-groups, and tolerance for behavioral diversity impact heritability estimates, thus yielding predictions for different social contexts. Moreover, when cumulative culture functionally overlaps with genes, genetic effects become masked, unmasked, or even reversed, and the causal effects of an identified gene become confounded with features of the cultural environment. The manner of confounding is specific to a particular society at a particular time, but a WEIRD (Western, educated, industrialized, rich, democratic) sampling problem obscures this boundedness. Cultural evolutionary dynamics are typically missing from models of gene-to-phenotype causality, hindering generalizability of genetic effects across societies and across time. We lay out a reconciled framework and use it to predict the ways in which heritability should differ between societies, between socioeconomic levels and other groupings within some societies but not others, and over the life course. An integrated cultural evolutionary behavioral genetic approach cuts through the nature–nurture debate and helps resolve controversies in topics such as IQ.

scholarly journals Migration, acculturation, and the maintenance of between-group cultural variation

2017 ◽  
Author(s):  
Alex Mesoudi
Keyword(s):  
Social Learning ◽  
Cultural Values ◽  
Cultural Evolution ◽  
Population Level ◽  
Empirical Literature ◽  
Cultural Variation ◽  
Individual Level ◽  
And Migration ◽  
The Individual ◽  
Social Learning Processes

AbstractHow do migration and acculturation (i.e. psychological or behavioral change resulting from migration) affect within- and between-group cultural variation? Here I answer this question by drawing analogies between genetic and cultural evolution. Population genetic models show that migration rapidly breaks down between-group genetic structure. In cultural evolution, however, migrants or their descendants can acculturate to local behaviors via social learning processes such as conformity, potentially preventing migration from eliminating between-group cultural variation. An analysis of the empirical literature on migration suggests that acculturation is common, with second and subsequent migrant generations shifting, sometimes substantially, towards the cultural values of the adopted society. Yet there is little understanding of the individual-level dynamics that underlie these population-level shifts. To explore this formally, I present models quantifying the effect of migration and acculturation on between-group cultural variation, for both neutral and costly cooperative traits. In the models, between-group cultural variation, measured using F statistics, is eliminated by migration and maintained by conformist acculturation. The extent of acculturation is determined by the strength of conformist bias and the number of demonstrators from whom individuals learn. Acculturation is countered by assortation, the tendency for individuals to preferentially interact with culturally-similar others. Unlike neutral traits, cooperative traits can additionally be maintained by payoff-biased social learning, but only in the presence of strong sanctioning institutions. Overall, the models show that surprisingly little conformist acculturation is required to maintain realistic amounts of between-group cultural diversity. While these models provide insight into the potential dynamics of acculturation and migration in cultural evolution, they also highlight the need for more empirical research into the individual-level learning biases that underlie migrant acculturation.

scholarly journals Sacral rulers in pre-Christian Scandinavia: The possibilities of typological comparisons within the paradigm of cultural evolution

2016 ◽  
Vol 52 (1) ◽  
pp. 9-35
Author(s):  
Simon Nygaard
Keyword(s):  
Cultural Evolution ◽  
Main Part ◽  
Theoretical Framework ◽  
Evolutionary Theories ◽  
History Of Religions ◽  
History Of ◽  
Societal Structure ◽  
New Perspective ◽  
Cultural Evolutionary

This article offers a new perspective on the century-old discussion of sacral rulers in the history of religions generally, and pre-Christian Scandinavian religions specifically, namely the application of a cultural evolutionary theoretical framework based on the work of Robert N. Bellah. In doing this, the article opens the possibility of wider typological comparisons within this paradigm and suggests a nuancing of Bellah’s typology with the addition of the category of ‘chiefdom religion’. This is utilised in the main part of the article, which features a comparison between the figure of the sacral ruler in pre-Christian Scandinavian and pre-Christian Hawaiian religions through an analysis of: 1) the position of the ruler in society, cult, and ideology; 2) the societal structure in which these religions are found; 3) the idea of a ruler sacrifice; 4) incestuous relationships and their ideological implications; and, finally, 5) the idea of a double rulership. Following this comparison, the perspectives in and the usefulness of cultural evolutionary theories in the history of religions are briefly evaluated.

scholarly journals Language change and language evolution: Cousins, siblings, twins?

2020 ◽  
Author(s):  
Stefan Hartmann
Keyword(s):  
Adaptive Systems ◽  
Language Change ◽  
Historical Linguistics ◽  
Language Evolution ◽  
Integrated Approach ◽  
Data Driven ◽  
Historical Time ◽  
Research Questions ◽  
The Relationship ◽  
Cross Fertilization

The relationship between “language change” and “language evolution” has recently become subject to some debate regarding the scope of both concepts. It has been claimed that while the latter used to refer to language origins in the first place, both terms can now, to a certain extent, be used synonymously. In this paper, I argue that this can partly be explained by parallel develop-ments both in historical linguistics and in the field of language evolution research that have led to a considerable amount of convergence between both fields. Both have adopted usage-based approaches and data-driven methods, which entails similar research questions and similar perspectives on the phenomena under investigation. This has ramifications for current models and theories of language change (or evolution). Two approaches in particular – the concept of com-plex adaptive systems and construction grammar – have been combined in integrated approaches that seek to explain both language emergence and language change over historical time. I discuss the potential and limitations of this integrated approach, and I argue that there is still some unex-plored potential for cross-fertilization.

The cultural evolution of war rituals

2018 ◽  
Vol 41 ◽  
Author(s):  
Luke Glowacki
Keyword(s):  
Cultural Evolution ◽  
Small Scale ◽  
Evolutionary Processes ◽  
Cultural Evolutionary

AbstractThe cultural evolutionary processes outlined by Singh illuminate why ritualized behaviors aimed at controlling unseen forces and overcoming fear are common in warfare among many small-scale societies. They also suggest an explanation for the development of ritual specialists for war who are distinct from war leaders.

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