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ABSTRACTThe Shuar Health and Life History Project (established in 2005) is an interdisciplinary, integrated field and laboratory research project with the Indigenous Shuar population in Amazonian Ecuador. Grounded in human biology, behavioral ecology, evolutionary psychology, evolutionary medicine, and global health, the SHLHP has three key research foci: (1) To identify how market integration (via effects on diet, pathogen exposure, lifestyle, etc.) impacts Shuar health and well‐being; (2) To investigate (using evolutionary life history theory) how lifetime phenotype and health are shaped by adaptive energy allocation between competing life tasks; and (3) To test hypothesized human psychological and demographic adaptations, including aspects of sociality that are central to the evolutionary success of our species. To address these foci, the SHLHP has established long‐term and mutually beneficial relationships with the Shuar and local collaborators, resulting in community‐engaged data collection with more than 3500 participants and a wide range of research publications and policy contributions over the past 20 years. This special issue of the American Journal of Human Biology showcases 10 original SHLHP articles that span much of the project's intellectual breadth and represent important advances for understanding human biology, life history, and health. To serve as an introduction, here we provide essential background on the Shuar and the SHLHP, overview the ten included special issue articles, and discuss key research and impact goals for the next 20 years of the SHLHP.

Human behavioural ecology is cultural ecology

This paper presents a critical reflection on interdisciplinary collaborations that seek to guide technical application by applying explanatory theory. It proposes that quotidian aspects of disciplinary specialization can present obstacles to interdisciplinary collaborations. This refers not to highly abstruse theory or complex techniques, but rather to the disciplinary lore and taken for granted assumptions that students and faculty trained in discrete fields master informally and articulate effortlessly. As a remedy it suggests sharing accounts of disciplinary lore at the outset and across the breadth of collaborative work. As an illustration, it develops several historical narratives of collaborations between computer scientists and anthropologists, from cybernetics in the mid twentieth century to a twenty-first century project combining the explanatory theory of human behavioral ecology with human computer interaction.

Abstract The rise of aliteracy, the burgeoning impact of crowded leisure time for children, and the increasingly complex daily lives of parents all impact on promoting reading for pleasure (RfP) requiring how parents value RfP to be considered in sympathetic and sustainable ways. By investigating parents’ experiences, this qualitative research elevated the voices of parents as they considered promoting a passion for reading in their children. The research is underpinned by the social constructivism of Dewey (Dewey, The Educational Forum, 50(3), 241–252, 1986); Giles & Eyler, Michigan Journal of Community Service Learning, 1(1), 77–85, 1994) and the support of Bronfenbrenner (1979). The ecology of human development: Experiments by nature and design. Harvard University Press.) ecological systems theory. Parents in regional south-east Queensland were interviewed to examine their approach to promoting reading for pleasure with their children and to ascertain their recommendations for supporting other parents. Parents’ perspectives are examined using interpretative phenomenological analysis (IPA) methodology. Comparison and contrast grids (Hramiak, Journal of Interactive Online Learning, 4(2), 83–93, 2005) were used to analyse the data. The value of hearing participants’ voices (Harreveld, 2004) throughout the study provided the connections other parents can use, and teachers can support, to create a passion for reading applicable to other contexts. The focus of this instalment is on how parents are or feel valued in the promotion of RfP and the strategies informed by these reflections. To effectively support parents, the principles of adult learning and acknowledging parents’ unique funds of knowledge were investigated. The lack of parent voice is evident in the literature, hampering the recognition of parents as they promote a passion for reading for their children.

Toward an understanding of cultural orientations through the lens of human behavioral ecology.

This paper investigates the ultimate socioeconomic causes underlying the termination of parental investment in humans by analyzing the relationship between socioeconomic status and various forms of child mortality, including live births, stillbirths, infant deaths, and infanticide. Utilizing theoretical foundations from human behavioral ecology, the study illustrates how different forms of termination of parental investment can be viewed as points along a continuum of adaptive strategies aimed at optimizing reproductive fitness. The research emphasizes that technical and cognitive limitations lead to many instances of infanticide being concealed as natural child deaths, such as Sudden Infant Death Syndrome (SIDS), thus complicating the accurate detection of true causes of death. However, addressing common ultimate causes-specifically socioeconomic factors such as healthcare accessibility, nutritional quality, social support, and stress reduction-can simultaneously prevent or reduce all forms of investment termination. The paper further analyzes demographic data from Zagreb and surrounding municipalities. Ultimately, the study advocates a holistic approach to public health interventions and policies aimed at improving socioeconomic conditions as a crucial step toward reducing all forms of child mortality.

ABSTRACT This article presents a systematic literature review to analyse the knowledge contributions of research in Sweden as to how educational leaders are addressing interculturalism in schools. In total 18 articles were analysed. Besides that, an educational leader was interviewed to enrich the findings from the literature with the experiences of an educational leader who addressed interculturalism from a particular perspective a time when there was an influx of migrants into Sweden. Bronfenbrenner’s [(1979). The ecology of human development: Experiments by nature and design. Harvard University Press] ecological theory was used as a conceptual framework. A major shortcoming in the research field on interculturalism is that there is little literature on how educational leaders in Sweden approach it. Furthermore, the research contributes with knowledge mostly about what hinders interculturalism and about the macrosystem. The findings of this article aim to explore these lacunae and provide suggestions on how to address interculturalism. The results are discussed in relation to needs for future research.

This paper explores Great Basin arid-zone hunter–forager rock art as signalling behaviour. The rock art in Lincoln County, Nevada, is the focus, and this symbolic repertoire is analysed within its broader archaeological and ethnographic contexts. This paper mobilises an explicitly theoretical approach which integrates human behavioural ecology (HBE) and the precepts of information exchange theory (IET), generating assumptions about style and signalling behaviour based on hunter–forager mobility patterns. An archaeological approach is deployed to contextualise two characteristic regional motifs—the Pahranagat solid-bodied and patterned-bodied anthropomorphs. Contemporary Great Basin Native American communities see Great Basin rock writing through a shamanistic ritual explanatory framework, and these figures are understood to be a powerful spirit figure, the Water Baby, and their attendant shamans’ helpers. This analysis proposes an integrated model to understand Great Basin symbolic behaviours through the Holocene: taking a dialogical approach to travel backward from the present to meet the archaeological past. The recursive nature of rock art imagery and its iterative activation by following generations allows for multiple interpretive frameworks to explain Great Basin hunter–forager and subsequent horticulturalist signalling behaviours over the past ca. 15,000 years.

This study investigates the links between life history strategy (LHS), IQ, and individualism/collectivism (IND/COL) across Russian regions. It is the first to examine regional differences in LHS, illustrating how biological trade-offs are linked to cultural values within a country and separately considering the role of cognitive abilities in this relationship. We hypothesize that cultural differences between regions can be understood through human behavioral ecology, specifically the trade-offs associated with LHS. Data from 83 Russian regions were used to create indices for slow LHS (sLHS) and IND/COL. The sLHS index included indicators like teenage fertility rates, rates of third or higher births, average height, educational attainment, and interest in human sexual behavior (using Google Trends data). The IND/COL index was constructed from indicators like the proportion of multigenerational and single-person households, divorce rates, and search data indicating ingroup identity expression. Regional IQ scores were derived from a large-scale online test administered to over 230.000 individuals across these regions. Our findings reveal strong positive correlations between sLHS, IQ, and IND/COL across Russian regions. Mediation analysis suggests that IQ likely fully mediates the relationship between sLHS and IND/COL. Geographical analysis showed clear patterns of spatial clustering, with gradients linked to latitude and altitude. Additionally, five latent regional profiles emerged from the data, indicating distinct patterns among the regions. These results, while acknowledging certain limitations, underscore the importance of LHS in understanding regional cultural differences. They also point to the need for Russian social policies to adapt to the unique characteristics of each region.

Cyber victimization targeting vulnerable populations, particularly older adults, has become increasingly prevalent in the digital age. Grounded in the Bioecological Systems Framework (Bronfenbrenner in The ecology of human development: Experiments by nature and design, Harvard University Press, Cambridge, 1979), this research explores the factors contributing to victimization, including the ease of exploitation, the situational factors setting up victims for scams, their vulnerabilities, the dynamics within their environments, and the challenges victims face in recognizing scams. Using semi-structured interviews, we asked scam victims (n = 19) aged 60 years and above about their personal and structural circumstances as well as their individual assessment of the impact of their being victimized. Despite high levels of education and computer literacy among our sample, their victimization occurred far too frequently, which prompts a call for the revision of existing approaches toward helping older adults overcome scam victimization.

Hypotheses about the evolution of multi-trait organismal features often encounter trade-offs between the precision and historical relevance of tests performed in actualistic contexts. That is, highly precise tests aimed at discriminating between competing hypotheses often incur a risk of explanatory misalignment with the historical phenomenon they target. We illustrate this via a discussion of the evolution of childhood. We argue childhood is a trait complex, consisting of multiple, diverse components: patterns of growth, feeding strategies, staggered skill acquisition, and social dependence. The potential of their independent evolution bears important consequences for the evolutionary significance of tests probing the adaptive benefits of childhood in contemporary foraging communities. Via 'isolation-testing' such investigations aim for precision at the cost of historical relevance in a potentially serious way. We suggest that integrative investigations relying on the timing and context of components' evolution, emphasizing historical relevance, frame evolutionary hypotheses more reliably than the emphasis on precise tests currently common, thus bearing a higher explanatory potential.

Human behavioral ecology is an evolutionary framework that attempts to understand how adaptive human behavior maps on to variation in social, cultural, and ecological environments. It emerged as a coherent framework in the United States and the U.K. in the 1980s and has flourished as an explanatory framework ever since. The concentration of HBE scholarship in English-speaking countries has led to missed opportunities to engage other partners in testing and expanding human behavioral ecological models of human behavioral and life history variation. In this review, we provide a brief review of human behavioral ecology and describe opportunities for related scholarship in the Chinese context. We introduce human behavioral ecology holistically, including its history, methodological frameworks, pet topics, and recent integration with related fields, with a special emphasis on its recent integration with Chinese social, archaeological, and life sciences scholarship. We address potential criticisms of human behavioral ecology and how to ensure a robust and careful application of human behavioral ecology principles in the study of human behavior in China, past and present. We conclude with excitement as the remarkable variation in the Chinese behavioral landscape offers unparalleled opportunities for innovative and integrative studies.

Supplemental Material for Toward an Understanding of Cultural Orientations Through the Lens of Human Behavioral Ecology

Studies of hunter-gatherer locomotion inform a wide range of academic fields, from human behavioural ecology and hominin evolution to sports science and evolutionary health. Despite celebrated ethnographic examples of hunter-gatherer locomotor proficiency in running, climbing, swimming and diving, there has been limited systematic analysis of cross-cultural variation in hunter-gatherer locomotor versatility. We conducted a systematic cross-cultural analysis of hunter-gatherer locomotion, coding locomotor behaviour from over 900 ethnographic documents. Our results indicated that high levels of locomotor versatility are common among hunter-gatherers, and that proficiency of running, climbing, swimming and diving is found in societies across the geographical and ecological breadth of the sample. Each locomotor modality was found to be relevant not only to food acquisition but also in leisure, ritual and violent conflict. Our results also indicated the prevalence of both male and female engagement within each locomotor modality, with climbing being the only modality to possess a notable bias towards male engagement in a substantial proportion of societies. The widespread habituality and functional significance of diverse locomotor proficiency in hunter-gatherers suggests that locomotor versatility represents a dimension of human adaptive lability, playing a major role in the ability of hunter-gatherers to thrive in almost every global ecology.

Sickle Cell Disease (SCD)-Related Stigma Among Indian SCD Patients - Findings of a Multicentric Study

Human evolutionary ecology stands to benefit by integrating theory and methods developed in movement ecology, and in turn, to make contributions to the broader field of movement ecology by leveraging our species’ distinct attributes. In this paper, we review data and evolutionary models suggesting that major changes in socio-spatial behaviour accompanied the evolution of language. To illustrate and explore these issues, we present a comparison of GPS measures of the socio-spatial behaviour of Hadza hunter–gatherers of northern Tanzania to those of olive baboons (Papio anubis), a comparatively small-brained primate that is also savanna-adapted. While standard spatial metrics show modest differences, measures of spatial diversity, landscape exploration and spatiotemporal displacement between individuals differ markedly. Groups of Hadza foragers rapidly accumulate a vast, diverse knowledge pool about places and things over the horizon, contrasting with the baboon’s narrower and more homogeneous pool of ecological information. The larger and more complex socio-spatial world illustrated by the Hadza is one where heightened cognitive abilities for spatial and episodic memory, navigation, perspective taking and communication about things beyond the here and now all have clear value.This article is part of the theme issue ‘The spatial–social interface: a theoretical and empirical integration’.

In this article we report on an exploration of leadership and context for the improvement of quality education in South African socioeconomic-deprived school contexts viewed through Hellinger’s contextual theory, open systems theory, Bronfenbrenner’s ecology of human development, and Bourdieu’s theory of field, habitus and power. A post positivistic approach allowed for a quantitative research design which employed an interpretivist lens to use the theory and the context to interpret the numbers. A self-designed questionnaire was used for the data collection. We analysed the data by means of the Statistical Package for the Social Sciences (SPSS) analysis program and evaluated using a Likert scale. In the study reported on here, the mean scores – sorted from the highest, which means the most important factor, to the lowest – are presented. The findings reveal that low teacher professionalism and non-compliance to the regulations, contextual factors outside the schools (teenage pregnancy, vandalism), learners’ circumstantial challenges, high accountability by the department without considering schools’ contextual factors, and a lack of parental involvement in the teaching-learning process were among the biggest challenges for principals to influence quality education.

For thousands of years, humans have been entertained by board games. The earliest documented game boards date to at least 6000 BC in the Near East (Sebbane 2001), and we know the name, Senet, and rules of a board game from Egypt dating to 3500–3100 BC. Aspects of inequality are omnipresent in the dynamics of the competition and cooperation inherent in games. In this review, I assess the digital version of the board game Catan, which is also called Catan Universe, discussing how anthropological theories such as human behavioral ecology are recognizable in the digital game. Playing this game provides a unique way to test models of inequality.

Researchers in the biological and behavioural sciences are increasingly conducting collaborative, multi-sited projects to address how phenomena vary across ecologies. These types of projects, however, pose additional workflow challenges beyond those typically encountered in single-sited projects. Through specific attention to cross-cultural research projects, we highlight four key aspects of multi-sited projects that must be considered during the design phase to ensure success: (1) project and team management; (2) protocol and instrument development; (3) data management and documentation; and (4) equitable and collaborative practices. Our recommendations are supported by examples from our experiences collaborating on the Evolutionary Demography of Religion project, a mixed-methods project collecting data across five countries in collaboration with research partners in each host country. To existing discourse, we contribute new recommendations around team and project management, introduce practical recommendations for exploring the validity of instruments through qualitative techniques during piloting, highlight the importance of good documentation at all steps of the project, and demonstrate how data management workflows can be strengthened through open science practices. While this project was rooted in cross-cultural human behavioural ecology and evolutionary anthropology, lessons learned from this project are applicable to multi-sited research across the biological and behavioural sciences.