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Facial expression is a group cohesion solution. 面部表情是群体凝聚力的解决方案。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100538
Bridget M Waller, Jamie Whitehouse, Eithne Kavanagh
{"title":"Facial expression is a group cohesion solution.","authors":"Bridget M Waller, Jamie Whitehouse, Eithne Kavanagh","doi":"10.1017/S0140525X25100538","DOIUrl":"https://doi.org/10.1017/S0140525X25100538","url":null,"abstract":"<p><p>Facial expression has evolved as a solution to the primate group living problem. A growing body of empirical evidence suggests that the evolution of facial expression has been driven by the need to bond. Dunbar's theories of group cohesion are therefore key to understanding primate (including human) facial expression.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e187"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A fishy perspective on the social brain hypothesis. 社会大脑假说的可疑观点。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25101453
Redouan Bshary, Zegni Triki
{"title":"A fishy perspective on the social brain hypothesis.","authors":"Redouan Bshary, Zegni Triki","doi":"10.1017/S0140525X25101453","DOIUrl":"https://doi.org/10.1017/S0140525X25101453","url":null,"abstract":"<p><p>Ectotherms, particularly fish, challenge traditional brain evolution theories by exhibiting advanced cognitive abilities despite their smaller brains. While the social brain hypothesis may apply within clades, sensory-motor systems likely explain the brain size differences between average-brained ectotherms and endotherms. Evolved complex sensory-motor systems suggest that brain evolution models should expand to include sensory and motor systems, beyond cognitive processes alone.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e166"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Beyond individual selection: adaptive networks and collective social niche construction. 超越个体选择：适应性网络和集体社会生态位构建。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100599
Cédric Sueur, Jean-Louis Deneubourg
{"title":"Beyond individual selection: adaptive networks and collective social niche construction.","authors":"Cédric Sueur, Jean-Louis Deneubourg","doi":"10.1017/S0140525X25100599","DOIUrl":"10.1017/S0140525X25100599","url":null,"abstract":"<p><p>Dunbar explains primates group cohesion through cognitive and structural mechanisms like grooming and social cognition. We extend this by highlighting collective social niche construction, where emergent social properties arise from feedback loops, selection pressures, and self-organisation. Adaptive social networks evolve through multilevel selection, cultural transmission, and ontogenetic changes, shaping survival, cognition, and collective intelligence across species.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e183"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
It's not just about allies - The role of identity in stable ingroup memberships. 这不仅仅是关于盟友——身份在稳定的内部成员关系中的作用。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100447
Mark W Moffett
{"title":"It's not just about allies - The role of identity in stable ingroup memberships.","authors":"Mark W Moffett","doi":"10.1017/S0140525X25100447","DOIUrl":"https://doi.org/10.1017/S0140525X25100447","url":null,"abstract":"<p><p>Dunbar exclusively sees groups as arising through the aggregate relationships between individuals and thereby makes the serious omission of not considering the capacity of those individuals to categorize one another as ingroup versus outgroup members.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e176"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145627938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intentional communication reduces social stress by increasing the predictability of conspecifics' behaviour. 有意识的沟通通过增加对同类行为的可预测性来减少社会压力。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100502
Sam G B Roberts, Anna I Roberts
{"title":"Intentional communication reduces social stress by increasing the predictability of conspecifics' behaviour.","authors":"Sam G B Roberts, Anna I Roberts","doi":"10.1017/S0140525X25100502","DOIUrl":"https://doi.org/10.1017/S0140525X25100502","url":null,"abstract":"<p><p>Specialised forms of social cognition enable primates to manage the stresses of group living by allowing for flexible and intentional communication. This is used to increase the predictability of conspecifics' behaviour for both signallers and receivers. Intentional communication helps to overcome the stimulus-driven processing that may occur due to stress, enhancing attention allocation in receivers.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e181"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145627979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
What holds groups together? How interdependence shapes group-living. 是什么让团队团结在一起？相互依存如何塑造群体生活。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25101775
Angelica Kaufmann, James Brooks, Liran Samuni, John Michael
{"title":"What holds groups together? How interdependence shapes group-living.","authors":"Angelica Kaufmann, James Brooks, Liran Samuni, John Michael","doi":"10.1017/S0140525X25101775","DOIUrl":"https://doi.org/10.1017/S0140525X25101775","url":null,"abstract":"<p><p>Dunbar's emphasis on dyadic relationships in group formation overlooks the roles of interdependence and joint commitment in social cohesion. We challenge his premise by highlighting the importance of group-level processes, particularly where top-down group pressures like cooperative breeding and out-group threat can induce joint commitment as an alternate means to sustain group cohesion.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e172"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Core affective mechanisms maintaining group cohesion. 维持群体凝聚力的核心情感机制。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100484
Karlijn van Heijst, Mariska E Kret
{"title":"Core affective mechanisms maintaining group cohesion.","authors":"Karlijn van Heijst, Mariska E Kret","doi":"10.1017/S0140525X25100484","DOIUrl":"https://doi.org/10.1017/S0140525X25100484","url":null,"abstract":"<p><p>As the third solution to group dispersion, Dunbar proposes primates use several higher order cognitive skills to especially manage 'weak ties' in a nuanced and fast-tracked way, therewith avoiding unnecessary conflicts. We here argue that subconscious, automatic processes including attention allocation and behavioral or neurophysiological state matching can serve a similar function in maintaining group cohesion.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e185"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Beyond the cortex-integrating hippocampal function into the Social Brain Hypothesis to explain advanced cognition. 超越皮质整合海马体功能到社会脑假说来解释高级认知。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100472
Edward Ruoyang Shi
{"title":"Beyond the cortex-integrating hippocampal function into the Social Brain Hypothesis to explain advanced cognition.","authors":"Edward Ruoyang Shi","doi":"10.1017/S0140525X25100472","DOIUrl":"10.1017/S0140525X25100472","url":null,"abstract":"<p><p>The Social Brain Hypothesis (SBH) connects primate brain size to social complexity but faces empirical limitations. We propose expanding the SBH by incorporating hippocampal functions across species, demonstrating how cognition emerges from both social and ecological pressures. This extended framework moves beyond cortical-centric models, providing a comprehensive understanding of brain evolution and the origins of human cognitive abilities, including language.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e182"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tolerance as a key mechanism for large-scale social cohesion. 宽容是大规模社会凝聚力的关键机制。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100435
Wen Zhou, Bin Yin, Yanjie Su, Brian Hare
{"title":"Tolerance as a key mechanism for large-scale social cohesion.","authors":"Wen Zhou, Bin Yin, Yanjie Su, Brian Hare","doi":"10.1017/S0140525X25100435","DOIUrl":"10.1017/S0140525X25100435","url":null,"abstract":"<p><p>Grooming and cognition support primate group cohesion but are insufficient for maintaining stability in large groups. We propose tolerance, the capacity to accommodate social stress, as an additional mechanism. Tolerance fosters flexible social skills and cooperation beyond small cliques. Shaped by hormonal adaptation and development, tolerance plays a foundational role in overcoming group size limits by sustaining complex social networks.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e189"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spelling out the mechanism: functional support and modified stressor appraisal buffer a cost of increased group size. 阐明机制：功能支持和改进的压力源评估缓冲了群体规模增加的成本。
IF 13.7 1区 心理学
Behavioral and Brain Sciences Pub Date : 2025-11-27 DOI: 10.1017/S0140525X25100411
Julia Ostner, Oliver Schülke
{"title":"Spelling out the mechanism: functional support and modified stressor appraisal buffer a cost of increased group size.","authors":"Julia Ostner, Oliver Schülke","doi":"10.1017/S0140525X25100411","DOIUrl":"https://doi.org/10.1017/S0140525X25100411","url":null,"abstract":"<p><p>Dunbar suggests structural, behavioral, and cognitive mechanisms to mitigate the costs of living in large groups. While we generally concur with the notion of group size effects on female productivity, we call for a more explicit treatment of how functional support alleviates social costs and disagree with the outright dismissal of ecological drivers and phylogenetic inertia.</p>","PeriodicalId":8698,"journal":{"name":"Behavioral and Brain Sciences","volume":"48 ","pages":"e177"},"PeriodicalIF":13.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145628150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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