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SEX in bonobos: The intensity of sexual stimulation sharply drops after facial mimicry 倭黑猩猩的性行为:在进行面部模仿后,性刺激的强度急剧下降
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-10-27 DOI: 10.1016/j.evolhumbehav.2025.106786
Martina Francesconi , Alice Galotti , Yannick Jadoul , Federico Giovannini , Andrea Ravignani , Elisabetta Palagi
Nonverbal communication plays a central role in human sexual interactions, enhancing sexual satisfaction and perceived partner connectedness. Here, we investigate the potential evolutionary roots of visual communication by examining the role of facial displays in sexual interactions in bonobos (Pan paniscus), a species in which - unlike many others - sexuality serves both reproductive and social functions. Using high-resolution temporal analyses, we tested whether variations in the rate of the oscillatory movements during sex (a proxy for sexual stimulation intensity) are associated with the exchange of facial expressions, specifically silent bared-teeth (SBT) displays and rapid facial mimicry (RFM). Analyses of sexual sessions free from interference by third-parties revealed that the offset of unilateral SBTs was not followed by a significant decrease in the oscillatory movement rates, whereas the termination of RFM consistently triggered a decline in sexual stimulation. Restricted temporal windows surrounding RFM cessation further confirmed that disruption of facial mimicry by even one partner suffices to decrease stimulation intensity. These results indicate that RFM, rather than passive observation of a partner's expression, marks the peak of sexual stimulation and reflects fine-grained socio-emotional coordination between partners. Our findings suggest that rapid facial exchanges during sexual interactions in bonobos may represent an evolutionarily conserved mechanism linking nonverbal communication and coordination in social actions. This work provides comparative insights into the communicative functions of facial expressions, highlighting parallels between humans and one of our closest phylogenetic relatives.
非语言交流在人类的性互动中起着核心作用,增强性满意度和感知伴侣的联系。在这里,我们通过研究倭黑猩猩(Pan paniscus)的面部表情在性互动中的作用来研究视觉交流的潜在进化根源。在倭黑猩猩(Pan paniscus)中,与许多其他物种不同,性行为既具有生殖功能,也具有社会功能。通过高分辨率的时间分析,我们测试了性行为中振荡运动速率的变化(性刺激强度的代表)是否与面部表情的交换有关,特别是无声的露齿(SBT)显示和快速面部模仿(RFM)。对不受第三方干扰的性行为的分析表明,单侧性行为的抵消并不会导致振荡运动率的显著下降,而RFM的终止却会引发性刺激的下降。在RFM停止周围受限的时间窗口进一步证实,即使是一个伴侣对面部模仿的破坏也足以降低刺激强度。这些结果表明,RFM,而不是被动观察伴侣的表情,标志着性刺激的高峰,反映了伴侣之间细致的社会情感协调。我们的研究结果表明,倭黑猩猩在性行为中快速的面部交流可能代表了一种进化上保守的机制,将非语言交流与社会行为中的协调联系起来。这项工作为面部表情的交流功能提供了比较的见解,突出了人类和我们最接近的系统发育亲戚之间的相似之处。
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引用次数: 0
Using SEM to test the associations among women's childhood ecology, adult psychosocial life history traits, and mating effort 利用扫描电镜对女性童年生态、成年社会心理生活史特征和交配努力之间的关系进行检验
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-11-08 DOI: 10.1016/j.evolhumbehav.2025.106783
Lisa M. Bohon, Sophia Sinclair, Raquel R. Medeiros-Tejomaya, Jessica Hamel, Alexandra H.B. Hock
The purpose of this study was to investigate childhood ecology before the age of 10 and adult psychosocial Life History (LH) traits as predictors of adult mating effort. College women (N = 875) volunteered in an online Qualtrics study. SEM analysis showed that faster life psychosocial traits explained 22.2 % of the relation between the childhood microsystem and mating effort. Women who experienced a disordered microsystem (childhood trauma, parental disengagement, parental cohabitation with an unrelated adult, and crime in their neighborhood) were more likely to exhibit adult faster LH personality traits such as psychopathy, impulsivity, resource control, tendencies, and neuroticism. These personality traits were also associated with a greater number of lifetime sexual partners, shorter-term mating orientation, and greater intention to engage in risky sexual behaviors. In addition, a disordered microsystem, and perceived resource insecurity related to having more lifetime sexual partners, shorter-term mating orientation, and greater endorsement of future risky sexual behaviors.
本研究的目的是探讨10岁前儿童生态和成人社会心理生活史(LH)特征作为成年交配努力的预测因子。大学女生(N = 875)自愿参加了一项在线素质研究。扫描电镜分析显示,快速生活的社会心理特征解释了童年微系统与交配努力之间22.2%的关系。经历过微系统紊乱的女性(童年创伤、父母疏离、父母与不相关的成年人同居、社区犯罪)更有可能表现出成人更快的LH人格特征,如精神病、冲动、资源控制、倾向和神经质。这些性格特征还与更多的终生性伴侣、更短期的交配取向以及更倾向于从事危险的性行为有关。此外,微系统紊乱和感知到的资源不安全感与拥有更多终生性伴侣、更短期的交配取向以及对未来危险性行为的更大认可有关。
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引用次数: 0
Gender differences in social networks under subsistence changes 生存变化下社会网络的性别差异
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-12-13 DOI: 10.1016/j.evolhumbehav.2025.106814
Yaming Huang , Gabriel Šaffa , Shiting Zhang , Pengpeng Bai , Liqiong Zhou , Gui He , Ruth Mace , Juan Du
Sexual selection theory suggests that gendered social strategies are universal outcomes of reproductive competition, yet recent cross-cultural studies show that these strategies are shaped by socio-ecological factors although they remain insufficiently examined. In particular, little is known about how gendered strategies adapt during periods of rapid social and economic changes. To this end, we examine gender differences in scale and composition of ego-networks, guided by two main hypotheses: that gender roles are shaped by (i) market participation, and (ii) post-marital residence pattern. Using data from 1169 married women and men across 14 Tibetan villages undergoing economic and kinship-system transitions, we applied Bayesian multilevel models to analyse core social relationships. Our findings show that, as men increase their participation in market economies, their networks become more kin-centred – strengthening biological kin ties while loosening friend ties – reflecting an instrumental restructuring of social relationships in response to changing economic roles. In contrast, women's networks remain largely unaffected, likely reflecting the persistence of caregiving responsibilities and strong local embeddedness. Post-marital residence patterns impose comparable trade-offs for both sexes: philopatric individuals prioritise biological kin, while affinal kin can effectively substitute for natal relatives when biological kin become less accessible, forming a balanced, bilateral cooperative network that integrates both kin types. This study underscores that women sustain stable and cohesive social ties across socio-economic transitions, while men adapt their networks more flexibly in response to shifting economic roles.
性选择理论认为,性别社会策略是生殖竞争的普遍结果,然而最近的跨文化研究表明,这些策略是由社会生态因素塑造的,尽管它们仍然没有得到充分的研究。特别是,人们对性别战略如何适应迅速的社会和经济变化时期所知甚少。为此,我们在两个主要假设的指导下,研究了自我网络规模和构成的性别差异:性别角色是由(i)市场参与和(ii)婚后居住模式塑造的。我们的研究结果表明,随着男性越来越多地参与市场经济,他们的网络变得更加以亲属为中心——加强了生物亲属关系,同时放松了朋友关系——反映了社会关系的结构性重构,以应对经济角色的变化。相比之下,女性的人际网络基本上没有受到影响,这可能反映了她们的照顾责任和强烈的地方归属感。婚后居住模式对两性都施加了可比较的权衡:有爱心的个人优先考虑生物亲属,而当生物亲属变得难以获得时,最终亲属可以有效地替代出生亲属,形成一个平衡的双边合作网络,将两种亲属类型整合在一起。这项研究强调,女性在社会经济转型过程中保持稳定和有凝聚力的社会关系,而男性则更灵活地调整其网络,以应对经济角色的转变。
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引用次数: 0
Beyond inclusive fitness: Why dual inheritance still matters in the age of memes 超越包容性健康:为什么双遗传在模因时代仍然很重要
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-09-02 DOI: 10.1016/j.evolhumbehav.2025.106756
Athena Aktipis
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引用次数: 0
Individual differences in sick face sensitivity: females are more sensitive to lassitude facial expressions than males 病态面部敏感性的个体差异:女性对疲倦的面部表情比男性更敏感
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-11-11 DOI: 10.1016/j.evolhumbehav.2025.106803
Tiffany S. Leung, Elizabeth A. Simpson
Lassitude—characterized by drooping eyelids, pale and slightly parted lips, and drooping corners of the mouth—is an emotional expression exhibited when people are sick. Here, we tested the hypothesis that there may be individual differences in the ability to recognize lassitude facial expressions. Adults from an undergraduate subject pool in the U.S. (N = 280) viewed images of healthy faces and the same people's faces when they were sick with a naturally occurring contagious illness, rating them on six dimensions theorized to index latent lassitude perception: safety, healthiness, approachability, alertness, social interest, and positivity. We found each dimension loaded positively onto latent lassitude perception, consistent with our hypothesis that these dimensions tap unique but related constructs. Participants' sex predicted their latent lassitude perception, with females showing higher accuracy than males. Our findings suggest there are sex differences in sick face perception, much like the perception of other nonverbal expressions. This is the first study, to our knowledge, to discover a female advantage in recognizing natural lassitude expressions. We discuss possible evolutionary mechanisms, such as the Primary Caretaker Hypothesis, and implications for public health.
无精打采——以眼睑下垂、嘴唇苍白微张、嘴角下垂为特征——是人们生病时表现出来的一种情绪表达。在这里,我们测试了一个假设,即识别疲劳面部表情的能力可能存在个体差异。来自美国的一个大学生研究小组(N = 280)的成年人观看了健康人的脸和同一个人患自然发生的传染病时的脸的图像,并在六个维度上对他们进行了评分,这些维度是用来指数潜在疲劳感知的:安全性、健康性、可接近性、警觉性、社会兴趣和积极性。我们发现每个维度都积极地加载到潜在的疲劳知觉中,这与我们的假设一致,即这些维度挖掘独特但相关的构念。参与者的性别预测了他们潜在的倦怠感,女性比男性表现出更高的准确性。我们的研究结果表明,在对病态面孔的感知上存在性别差异,就像对其他非语言表情的感知一样。据我们所知,这是首次发现女性在识别自然疲劳表情方面有优势的研究。我们讨论了可能的进化机制,如初级看护假说,以及对公共卫生的影响。
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引用次数: 0
The co-evolution in humans by sexual and social selection of kissing, body hairlessness, art, continually-growing head hair, acne vulgaris and keloid scarring 人类通过接吻、体毛脱落、艺术、不断生长的头发、寻常痤疮和瘢痕疙瘩等性和社会选择的共同进化
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-11-18 DOI: 10.1016/j.evolhumbehav.2025.106779
Terence Kealey
Human kissing appears to be part of a constellation of sexually- and socially-coevolved traits that include body hairlessness, art, continually-growing head hair, acne vulgaris and keloid scarring.
人类接吻似乎是一系列性和社会共同进化特征的一部分,这些特征还包括体毛脱落、艺术、持续生长的头发、寻常痤疮和瘢痕疙瘩。
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引用次数: 0
Exploring nose-to-nose contact in mammals 探索哺乳动物的鼻对鼻接触
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-12-16 DOI: 10.1016/j.evolhumbehav.2025.106809
Sophie Lund Rasmussen
Only a few species perform lip kissing. However, nose-to-nose contact is a common yet less explored behaviour observed across various animal taxa. This review investigates the multifaceted suggested roles and functions of nose-to-nose contact by including existing literature describing this behaviour in combination with field observations from mammal researchers. Documentation of this behaviour in mammalian species with varying social strategies ranging from solitary to eusocial attest how these nose-to-nose interactions serve distinct, but apparently very diverse purposes. Insights from ethology and evolutionary biology suggest different adaptive advantages of nose-to-nose contact, such as enhanced social cohesion and increased reproductive success, although in some cases caused by reproductive suppression of conspecifics through nose-to-nose contact.
只有少数物种会接吻。然而,鼻子对鼻子的接触是一种常见的行为,但在各种动物类群中观察到的研究较少。本文通过结合哺乳动物研究人员的实地观察,结合现有文献对鼻对鼻接触行为的描述,调查了多方面的建议角色和功能。从独居到群居的不同社会策略的哺乳动物物种的这种行为的记录证明了这些鼻子对鼻子的互动是如何服务于不同的,但显然是非常多样化的目的。行为学和进化生物学的见解表明,鼻子对鼻子接触具有不同的适应优势,例如增强社会凝聚力和提高繁殖成功率,尽管在某些情况下,鼻子对鼻子接触会抑制同种动物的繁殖。
{"title":"Exploring nose-to-nose contact in mammals","authors":"Sophie Lund Rasmussen","doi":"10.1016/j.evolhumbehav.2025.106809","DOIUrl":"10.1016/j.evolhumbehav.2025.106809","url":null,"abstract":"<div><div>Only a few species perform lip kissing. However, nose-to-nose contact is a common yet less explored behaviour observed across various animal taxa. This review investigates the multifaceted suggested roles and functions of nose-to-nose contact by including existing literature describing this behaviour in combination with field observations from mammal researchers. Documentation of this behaviour in mammalian species with varying social strategies ranging from solitary to eusocial attest how these nose-to-nose interactions serve distinct, but apparently very diverse purposes. Insights from ethology and evolutionary biology suggest different adaptive advantages of nose-to-nose contact, such as enhanced social cohesion and increased reproductive success, although in some cases caused by reproductive suppression of conspecifics through nose-to-nose contact.</div></div>","PeriodicalId":55159,"journal":{"name":"Evolution and Human Behavior","volume":"47 1","pages":"Article 106809"},"PeriodicalIF":3.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790207","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 smart challenge but ultimately mistimed and misleading: Commentary on Baumard and André 一个聪明的挑战,但最终不合时宜和误导:评论鲍玛和安德烈
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-10-23 DOI: 10.1016/j.evolhumbehav.2025.106782
Monique Borgerhoff Mulder
{"title":"A smart challenge but ultimately mistimed and misleading: Commentary on Baumard and André","authors":"Monique Borgerhoff Mulder","doi":"10.1016/j.evolhumbehav.2025.106782","DOIUrl":"10.1016/j.evolhumbehav.2025.106782","url":null,"abstract":"","PeriodicalId":55159,"journal":{"name":"Evolution and Human Behavior","volume":"47 1","pages":"Article 106782"},"PeriodicalIF":3.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924076","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
Zombie Theories and the Quest for Consilience: A Critical Review of Hertler et al.’s The Evolution of Political Ideology 僵尸理论与对一致性的追求:对希特勒等人的《政治意识形态的演变》的批判性评述
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2026-01-01 Epub Date: 2025-11-05 DOI: 10.1016/j.evolhumbehav.2025.106789
Kristen K. Knowles
{"title":"Zombie Theories and the Quest for Consilience: A Critical Review of Hertler et al.’s The Evolution of Political Ideology","authors":"Kristen K. Knowles","doi":"10.1016/j.evolhumbehav.2025.106789","DOIUrl":"10.1016/j.evolhumbehav.2025.106789","url":null,"abstract":"","PeriodicalId":55159,"journal":{"name":"Evolution and Human Behavior","volume":"47 1","pages":"Article 106789"},"PeriodicalIF":3.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467783","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
The pitfalls of an impoverished approach to culture: Commentary on Baumard and André 贫乏的文化研究方法的陷阱:鲍玛和安德烈评论
IF 3.2 1区 心理学 Q1 BEHAVIORAL SCIENCES Pub Date : 2025-11-01 Epub Date: 2025-08-19 DOI: 10.1016/j.evolhumbehav.2025.106746
Gillian R. Brown
{"title":"The pitfalls of an impoverished approach to culture: Commentary on Baumard and André","authors":"Gillian R. Brown","doi":"10.1016/j.evolhumbehav.2025.106746","DOIUrl":"10.1016/j.evolhumbehav.2025.106746","url":null,"abstract":"","PeriodicalId":55159,"journal":{"name":"Evolution and Human Behavior","volume":"46 6","pages":"Article 106746"},"PeriodicalIF":3.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864223","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
期刊
Evolution and Human Behavior
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