{"title":"Correction to: Cultural Change Reduces Gender Differences in Mobility and Spatial Ability among Seminomadic Pastoralist-Forager Children in Northern Namibia.","authors":"Helen E Davis, Jonathan Stack, Elizabeth Cashdan","doi":"10.1007/s12110-021-09400-0","DOIUrl":"https://doi.org/10.1007/s12110-021-09400-0","url":null,"abstract":"","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"207"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09400-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38982575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tanya Broesch, Patrick L Carolan, Senay Cebioğlu, Chris von Rueden, Adam Boyette, Cristina Moya, Barry Hewlett, Michelle A Kline
{"title":"Opportunities for Interaction : Natural Observations of Children's Social Behavior in Five Societies.","authors":"Tanya Broesch, Patrick L Carolan, Senay Cebioğlu, Chris von Rueden, Adam Boyette, Cristina Moya, Barry Hewlett, Michelle A Kline","doi":"10.1007/s12110-021-09393-w","DOIUrl":"https://doi.org/10.1007/s12110-021-09393-w","url":null,"abstract":"<p><p>We examine the opportunities children have for interacting with others and the extent to which they are the focus of others' visual attention in five societies where extended family communities are the norm. We compiled six video-recorded datasets (two from one society) collected by a team of anthropologists and psychologists conducting long-term research in each society. The six datasets include video observations of children among the Yasawas (Fiji), Tanna (Vanuatu), Tsimane (Bolivia), Huatasani (Peru), and Aka (infants and children 4-12 years old; Central African Republic). Each dataset consists of a series of videos of children ranging in age from 2 months to 12 years in their everyday contexts. We coded 998 videos and identified with whom children had opportunities to interact (male and female adults and children) as well as the number of individuals and the proportion of observed time that children spent with these individuals. We also examined the proportion of time children received direct visual gaze (indicating attention to the child). Our results indicate that children less than 5 years old spend the majority of their observed time in the presence of one female adult. This is the case across the five societies. In the three societies from which we have older children (Aka, Yasawa, Peru), we find a clear shift around 5 years of age, with children spending the majority of their time with other children. We also coded the presence or absence of a primary caregiver and found that caregivers remained within 2 ft of target children until 7 years of age. When they were in the company of a primary caregiver, children older than seven spent the majority of their time more than 2 ft from the caregiver. We found a consistent trend across societies with decreasing focal attention on the child with increasing child age. These findings show (1) remarkable consistency across these societies in children's interaction opportunities and (2) that a developmental approach is needed to fully understand human development because the social context is dynamic across the lifespan. These data can serve as a springboard for future research examining social development in everyday contexts.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"208-238"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09393-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38815802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Childhood Teaching and Learning among Savanna Pumé Hunter-Gatherers : Mismatch between Foraging and Postindustrial Societies.","authors":"Karen L Kramer","doi":"10.1007/s12110-021-09392-x","DOIUrl":"https://doi.org/10.1007/s12110-021-09392-x","url":null,"abstract":"<p><p>Research in nonindustrial small-scale societies challenges the common perception that human childhood is universally characterized by a long period of intensive adult investment and dedicated instruction. Using return rate and time allocation data for the Savanna Pumé, a group of South American hunter-gatherers, age patterns in how children learn to become productive foragers and from whom they learn are observed across the transition from childhood to adolescence. Results show that Savanna Pumé children care for their siblings, are important economic contributors, learn by doing rather than by instruction, and spend their time principally in the company of other children. This developmental experience contrasts with that of children in postindustrial societies, who are dependent on adults, often well past maturity; learn in formal settings; and spend much of their time in the company of adults. These differences raise questions about whether normative behaviors observed in postindustrial societies are representative of human children. This comparison also identifies the potential mismatch between hunter-gatherer and postindustrial societies in the extent to which children may be well adapted to learn from and teach each other. In particular, spending time in autonomous work and play groups develops the cooperation and coordination skills that are foundational to human subsistence and growing up to be socially and productively adept adults and parents.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"87-114"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09392-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39063379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alyssa N Crittenden, Alan Farahani, Kristen N Herlosky, Trevor R Pollom, Ibrahim A Mabulla, Ian T Ruginski, Elizabeth Cashdan
{"title":"Correction to: Harm Avoidance and Mobility During Middle Childhood and Adolescence among Hadza Foragers.","authors":"Alyssa N Crittenden, Alan Farahani, Kristen N Herlosky, Trevor R Pollom, Ibrahim A Mabulla, Ian T Ruginski, Elizabeth Cashdan","doi":"10.1007/s12110-021-09403-x","DOIUrl":"https://doi.org/10.1007/s12110-021-09403-x","url":null,"abstract":"","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"177"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09403-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38925228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Social Learning and Innovation in Adolescence : A Comparative Study of Aka and Chabu Hunter-Gatherers of Central and Eastern Africa.","authors":"Bonnie Hewlett","doi":"10.1007/s12110-021-09391-y","DOIUrl":"https://doi.org/10.1007/s12110-021-09391-y","url":null,"abstract":"<p><p>This paper examines how innovative skills and knowledge are transmitted and acquired among adolescents in two hunter-gatherer communities, the Aka of southern Central African Republic and the Chabu of southwestern Ethiopia. Modes of transmission and processes of social learning are addressed. Innovation as well as social learning have been hypothesized to be key features of human cumulative culture, enhancing the fitness and survival of individuals in diverse environments. The innovation literature indicates adult males are more innovative than children and female adults and therefore predicts that adolescents will seek out adult males. Further, the mode of transmission should be oblique (i.e., learning from adults other than parents). Thus, learning of innovations should be oblique or horizontal rather than vertical, with adolescents paying particular attention to \"successful\" innovative individuals (prestige bias). The social learning literature indicates that complex skills or knowledge is likely to be learned through teaching, and therefore that teaching will be an important process in the transmission of innovations. In-depth and semi-structured interviews, informal observations, and systematic free-listing were used to evaluate these hypotheses. The study found that (1) cultural context patterned whether or not adolescents sought out adult male or female innovators; (2) oblique modes of transmission were mentioned with greater frequency than horizontal or vertical modes; (3) knowledge and skill bias was notable and explicitly linked by the adolescents to reproductive effort; and (4) teaching was biased toward same-sex individuals and was an important but not an exclusive means of transmitting complex skills and social knowledge.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"239-278"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09391-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38815801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sheina Lew-Levy, Erik J Ringen, Alyssa N Crittenden, Ibrahim A Mabulla, Tanya Broesch, Michelle A Kline
{"title":"The Life History of Learning Subsistence Skills among Hadza and BaYaka Foragers from Tanzania and the Republic of Congo.","authors":"Sheina Lew-Levy, Erik J Ringen, Alyssa N Crittenden, Ibrahim A Mabulla, Tanya Broesch, Michelle A Kline","doi":"10.1007/s12110-021-09386-9","DOIUrl":"10.1007/s12110-021-09386-9","url":null,"abstract":"<p><p>Aspects of human life history and cognition, such as our long childhoods and extensive use of teaching, theoretically evolved to facilitate the acquisition of complex tasks. The present paper empirically examines the relationship between subsistence task difficulty and age of acquisition, rates of teaching, and rates of oblique transmission among Hadza and BaYaka foragers from Tanzania and the Republic of Congo. We further examine cross-cultural variation in how and from whom learning occurred. Learning patterns and community perceptions of task difficulty were assessed through interviews. We found no relationship between task difficulty, age of acquisition, and oblique transmission, and a weak but positive relationship between task difficulty and rates of teaching. While same-sex transmission was normative in both societies, tasks ranked as more difficult were more likely to be transmitted by men among the BaYaka, but not among the Hadza, potentially reflecting cross-cultural differences in the sexual division of subsistence and teaching labor. Further, the BaYaka were more likely to report learning via teaching, and less likely to report learning via observation, than the Hadza, possibly owing to differences in socialization practices.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"16-47"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8208923/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38975291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Co-occurrence of Ostensive Communication and Generalizable Knowledge in Forager Storytelling : Cross-Cultural Evidence of Teaching in Forager Societies.","authors":"Michelle Scalise Sugiyama","doi":"10.1007/s12110-021-09385-w","DOIUrl":"https://doi.org/10.1007/s12110-021-09385-w","url":null,"abstract":"<p><p>Teaching is hypothesized to be a species-typical behavior in humans that contributed to the emergence of cumulative culture. Several within-culture studies indicate that foragers depend heavily on social learning to acquire practical skills and knowledge, but it is unknown whether teaching is universal across forager populations. Teaching can be defined ethologically as the modification of behavior by an expert in the presence of a novice, such that the expert incurs a cost and the novice acquires skills/knowledge more efficiently or that it would not acquire otherwise. One behavioral modification hypothesized to be an adaptation for teaching is ostensive communication-exaggerations of prosody and gesture that signal intent to transmit generalizable knowledge and indicate the intended receiver. On this view, the use of ostensive communication in conjunction with the transmission of generalizable knowledge constitutes evidence of teaching. Oral storytelling appears to meet these criteria: Indigenous peoples regard their traditions as important sources of ecological and social knowledge, and oral storytelling is widely reported to employ paralinguistic communication. To test this hypothesis, descriptions of performed narrative in forager societies were coded for the use of 14 ostensive-communicative behaviors and the presence of generalizable knowledge. Although biased toward North America, the study sample comprised 53 forager cultures spanning five continents, 34 language families, and diverse biomes. All cultures evinced the predicted behaviors. Results suggest that foragers use storytelling as a mode of instruction, thus providing cross-cultural evidence of teaching in forager populations.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"279-300"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09385-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25584205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cultural Change Reduces Gender Differences in Mobility and Spatial Ability among Seminomadic Pastoralist-Forager Children in Northern Namibia.","authors":"Helen E Davis, Jonathan Stack, Elizabeth Cashdan","doi":"10.1007/s12110-021-09388-7","DOIUrl":"https://doi.org/10.1007/s12110-021-09388-7","url":null,"abstract":"<p><p>A fundamental cognitive function found across a wide range of species and necessary for survival is the ability to navigate complex environments. It has been suggested that mobility may play an important role in the development of spatial skills. Despite evolutionary arguments offering logical explanations for why sex/gender differences in spatial abilities and mobility might exist, thus far there has been limited sampling from nonindustrialized and subsistence-based societies. This lack of sampling diversity has left many unanswered questions regarding the effects that environmental variation and cultural norms may have in shaping mobility patterns during childhood and the development of spatial competencies that may be associated with it. Here we examine variation in mobility (through GPS tracking and interviews), performance on large-scale spatial skills (i.e., navigational ability), and performance on small-scale spatial skills (e.g., mental rotation task, Corsi blocks task, and water-level task) among Twa forager/pastoralist children whose daily lives have been dramatically altered since settlement and the introduction of government-funded boarding schools. Unlike in previous findings among Twa adults, boys and girls (N = 88; aged 6-18) show similar patterns of travel on all measures of mobility. We also find no significant differences in spatial task performance by gender for large- or small-scale spatial skills. Further, children performed as well as adults did on mental rotation, and they outperformed adults on the water-level task. We discuss how children's early learning environments may influence the development of both large- and small-scale spatial skills.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"178-206"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09388-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38897696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eric Schniter, Shane J Macfarlan, Juan J Garcia, Gorgonio Ruiz-Campos, Diego Guevara Beltran, Brenda B Bowen, Jory C Lerback
{"title":"Age-Appropriate Wisdom? : Ethnobiological Knowledge Ontogeny in Pastoralist Mexican Choyeros.","authors":"Eric Schniter, Shane J Macfarlan, Juan J Garcia, Gorgonio Ruiz-Campos, Diego Guevara Beltran, Brenda B Bowen, Jory C Lerback","doi":"10.1007/s12110-021-09387-8","DOIUrl":"https://doi.org/10.1007/s12110-021-09387-8","url":null,"abstract":"<p><p>We investigate whether age profiles of ethnobiological knowledge development are consistent with predictions derived from life history theory about the timing of productivity and reproduction. Life history models predict complementary knowledge profiles developing across the lifespan for women and men as they experience changes in embodied capital and the needs of dependent offspring. We evaluate these predictions using an ethnobiological knowledge assessment tool developed for an off-grid pastoralist population known as Choyeros, from Baja California Sur, Mexico. Our results indicate that while individuals acquire knowledge of most dangerous items and edible resources by early adulthood, knowledge of plants and animals relevant to the age and sex divided labor domains and ecologies (e.g., women's house gardens, men's herding activities in the wilderness) continues to develop into middle adulthood but to different degrees and at different rates for men and women. As the demands of offspring on parents accumulate with age, reproductive-aged adults continue to develop their knowledge to meet their children's needs. After controlling for vision, our analysis indicates that many post-reproductive adults show the greatest ethnobiological knowledge. These findings extend our understanding of the evolved human life history by illustrating how changes in embodied capital and the needs of dependent offspring predict the development of men's and women's ethnobiological knowledge across the lifespan.</p>","PeriodicalId":47797,"journal":{"name":"Human Nature-An Interdisciplinary Biosocial Perspective","volume":"32 1","pages":"48-83"},"PeriodicalIF":2.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s12110-021-09387-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38901520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}