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| Open AccessCell-in-cell phenomena across the tree of life
- Stefania E. Kapsetaki
- , Luis H. Cisneros
- & Carlo C. Maley
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| Open AccessChimpanzees engage in competitive altruism in a triadic ultimatum game
- Alejandro Sánchez-Amaro
- , Luke Maurits
- & Daniel B. M. Haun
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| Open AccessPre-electoral coalition agreement from the Black–Scholes point of view
- D. Mitrović
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| Open AccessConversational facial signals combine into compositional meanings that change the interpretation of speaker intentions
- James P. Trujillo
- & Judith Holler
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| Open AccessThe sound of yawns makes geladas yawn
- Luca Pedruzzi
- , Martina Francesconi
- & Alban Lemasson
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| Open AccessThe impact of intersectional racial and gender biases on minority female leadership over two centuries
- Ganna Pogrebna
- , Spyros Angelopoulos
- & Nataliya Tkachenko
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| Open AccessEarliest known funerary rites in Wallacea after the last glacial maximum
- Stuart Hawkins
- , Gabriella Ayang Zetika
- & Sue O’Connor
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| Open AccessComparing accuracy in voice-based assessments of biological speaker traits across speech types
- Piotr Sorokowski
- , Agata Groyecka-Bernard
- & Katarzyna Pisanski
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| Open AccessThe effects of challenge or social buffering on cortisol, testosterone, and antler growth in captive red deer (Cervus elaphus) males
- Luděk Bartoš
- , Bruno Esattore
- & Jitka Bartošová
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| Open AccessEmergence of a mutual-growth mechanism in networks evolved by social preference based on indirect utility
- Jong-Hyeok Lee
- & Ken-ichiro Ogawa
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| Open AccessStingy bots can improve human welfare in experimental sharing networks
- Hirokazu Shirado
- , Yoyo Tsung-Yu Hou
- & Malte F. Jung
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| Open AccessUnraveling the controversial effect of Covid-19 on college students’ performance
- Luca Bonacini
- , Giovanni Gallo
- & Fabrizio Patriarca
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| Open AccessHigh-status individuals are held to higher ethical standards
- Stefan T. Trautmann
- , Xianghong Wang
- & Yilong Xu
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| Open AccessThe interaction between cortisol and testosterone predicts leadership within rock hyrax social groups
- Yael Goll
- , Camille Bordes
- & Eli Geffen
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| Open AccessModulation of dog–owner relationship and dog social and cognitive behavior by owner temperament and dog breed group
- Miiamaaria V. Kujala
- , Noora Imponen
- & Noona Kiuru
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| Open AccessWinner-loser effects improve social network efficiency between competitors with equal resource holding power
- M. Hermanussen
- , M. Dammhahn
- & D. Groth
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| Open AccessCapability accumulation patterns across economic, innovation, and knowledge-production activities
- Aurelio Patelli
- , Lorenzo Napolitano
- & Andrea Gabrielli
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| Open AccessPerceived reward attainability may underlie dogs’ responses in inequity paradigms
- Jim McGetrick
- , Hugo Peters
- & Friederike Range
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| Open AccessDescriptive norms caused increases in mask wearing during the COVID-19 pandemic
- Samantha L. Heiman
- , Scott Claessens
- & Peter M. Todd
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| Open AccessVirtual agents and risk-taking behavior in adolescence: the twofold nature of nudging
- Cinzia Di Dio
- , Federico Manzi
- & Antonella Marchetti
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| Open AccessAmelogenin peptide analyses reveal female leadership in Copper Age Iberia (c. 2900–2650 BC)
- Marta Cintas-Peña
- , Miriam Luciañez-Triviño
- & Leonardo García Sanjuán
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| Open AccessHorses (Equus caballus) facial micro-expressions: insight into discreet social information
- Claude Tomberg
- , Maxime Petagna
- & Lucy-Anne de Selliers de Moranville
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| Open AccessCaste-specific expressions and diverse roles of takeout genes in the termite Reticulitermes speratus
- Kokuto Fujiwara
- , Akimi Karasawa
- & Kiyoto Maekawa
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| Open AccessEvolution of fairness in the divide-a-lottery game
- Jeong-Yoo Kim
- & Kyu-Min Lee
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| Open AccessPerceiver and target partisanship shift facial trustworthiness effects on likability
- Caraline S. Malloy
- , Colleen Hughes
- & Brittany S. Cassidy
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| Open AccessCooperative and conformist behavioural preferences predict the dual dimensions of political ideology
- Scott Claessens
- , Chris G. Sibley
- & Quentin D. Atkinson
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| Open AccessMarried women with children experience greater intrasexual competition than their male counterparts
- Joyce F. Benenson
- & Henry Markovits
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| Open AccessInvestigating responses to object-labels in the domestic dog (Canis familiaris)
- Hanna Kőszegi
- , Claudia Fugazza
- & Attila Andics
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| Open AccessFamily before work: task reversion in workers of the red imported fire ant, Solenopsis invicta in the presence of brood
- Jesse Starkey
- & Cecilia Tamborindeguy
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| Open AccessDiversity enables the jump towards cooperation for the Traveler’s Dilemma
- María Alejandra Ramírez
- , Matteo Smerlak
- & Jürgen Jost
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| Open AccessConstraints on cooperation shape hierarchical versus distributed structure in human groups
- Matthew R. Zefferman
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| Open AccessThe influence of task difficulty, social tolerance and model success on social learning in Barbary macaques
- Ivan Garcia-Nisa
- , Cara Evans
- & Rachel L. Kendal
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| Open AccessMale cooperation improves their own and kin-group productivity in a group-foraging spider
- Bharat Parthasarathy
- , Marlis Dumke
- & Jutta M. Schneider
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| Open AccessThe geography of the age at menopause in central Portugal since the early twentieth century
- Rui Martins
- , Bruno de Sousa
- & Vítor Rodrigues
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| Open AccessBehavioral roles of biogenic amines in bumble bee males
- Tomohiro Watanabe
- & Ken Sasaki
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| Open AccessA survey of vocal mimicry in companion parrots
- Lauryn Benedict
- , Alexandra Charles
- & Christine R Dahlin
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| Open AccessBehavior of snow monkeys hunting fish to survive winter
- Masaki Takenaka
- , Kosuke Hayashi
- & Koji Tojo
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| Open AccessAncestral social environments plus nonlinear benefits can explain cooperation in human societies
- Nadiah P. Kristensen
- , Hisashi Ohtsuki
- & Ryan A. Chisholm
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| Open AccessInstitutional similarity drives cultural similarity among online communities
- Qiankun Zhong
- & Seth Frey
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| Open AccessEvolution of direct reciprocity in group-structured populations
- Yohsuke Murase
- , Christian Hilbe
- & Seung Ki Baek
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| Open AccessFrom January to June: Birth seasonality across two centuries in a rural Polish community
- Ilona Nenko
- , Michael Briga
- & Grazyna Jasienska
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Registered Report
| Open AccessRegistered report: Social face evaluation: ethnicity-specific differences in the judgement of trustworthiness of faces and facial parts
- Irina Schmid
- , Zachary Witkower
- & Stefan Stieger
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| Open AccessMultidisciplinary evidence of an isolated Neanderthal occupation in Abric del Pastor (Alcoi, Iberian Peninsula)
- Santiago Sossa-Ríos
- , Alejandro Mayor
- & Manuel Vaquero
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| Open AccessMulti-queen breeding is associated with the origin of inquiline social parasitism in ants
- Romain A. Dahan
- & Christian Rabeling
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| Open AccessMisrepresentation of group contributions undermines conditional cooperation in a human decision making experiment
- Pieter van den Berg
- , Siyuan Liu
- & Jianlei Zhang
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| Open AccessVertebrate growth plasticity in response to variation in a mutualistic interaction
- Theresa Rueger
- , Anjali Kristina Bhardwaj
- & Peter Michael Buston
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| Open AccessTrustors’ disregard for trustees deciding quickly or slowly in three experiments with time constraints
- Antonio Cabrales
- , Antonio M. Espín
- & Stephen Rassenti