Flexible decision-making in grooming partner choice in sooty mangabeys and chimpanzees

Balancing Type I error and power in linear mixed models

(2017) Hannes Matuschek et al.   JOURNAL OF MEMORY AND LANGUAGE

Sex-specific association patterns in bonobos and chimpanzees reflect species differences in cooperation

(2017) Martin Surbeck et al.   Royal Society Open Science

Bystanders intervene to impede grooming in Western chimpanzees and sooty mangabeys

(2017) Alexander Mielke et al.   Royal Society Open Science

Reciprocity in group-living animals: partner control versus partner choice

(2016) Gabriele Schino et al.   BIOLOGICAL REVIEWS

Biological trade and markets

(2016) Peter Hammerstein et al.   PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Oxytocin reactivity during intergroup conflict in wild chimpanzees

(2016) Liran Samuni et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Female monkeys use both the carrot and the stick to promote male participation in intergroup fights

(2016) T. Jean Marie Arseneau-Robar et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Social support reduces stress hormone levels in wild chimpanzees across stressful events and everyday affiliations

(2016) Roman M. Wittig et al.   Nature Communications

Bystanders, parcelling, and an absence of trust in the grooming interactions of wild male chimpanzees

(2016) Stefano S. K. Kaburu et al.   Scientific Reports

Egalitarian despots: hierarchy steepness, reciprocity and the grooming-trade model in wild chimpanzees, Pan troglodytes

(2015) Stefano S.K. Kaburu et al.   ANIMAL BEHAVIOUR

Are primates out of the market?

(2015) Alejandro Sánchez-Amaro et al.   ANIMAL BEHAVIOUR

Friendship, reciprocation, and interchange in an individual-based model

(2015) Ivan Puga-Gonzalez et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Post-copulatory grooming: a conditional mating strategy?

(2015) Ruth S. Sonnweber et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Wild Vervet Monkeys Trade Tolerance and Specific Coalitionary Support for Grooming in Experimentally Induced Conflicts

(2015) Christèle Borgeaud et al.   CURRENT BIOLOGY

Social behavior and patterns of testosterone and glucocorticoid levels differ between male chacma and Guinea baboons

(2015) Urs Kalbitzer et al.   HORMONES AND BEHAVIOR

Fitting Linear Mixed-Effects Models Usinglme4

(2015) Douglas Bates et al.   Journal of Statistical Software

Biodiversity on the Rocks: Macrofauna Inhabiting Authigenic Carbonate at Costa Rica Methane Seeps

(2015) Lisa A. Levin et al.   PLoS One

Ravens Intervene in Others’ Bonding Attempts

(2014) Jorg J.M. Massen et al.   CURRENT BIOLOGY

Responses to social and environmental stress are attenuated by strong male bonds in wild macaques

(2014) Christopher Young et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Triadic social interactions operate across time: a field experiment with wild chimpanzees

(2014) R. M. Wittig et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Role of grooming in reducing tick load in wild baboons (Papio cynocephalus)

(2013) Mercy Y. Akinyi et al.   ANIMAL BEHAVIOUR

Urinary oxytocin and social bonding in related and unrelated wild chimpanzees

(2013) C. Crockford et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Reciprocity explains food sharing in humans and other primates independent of kin selection and tolerated scrounging: a phylogenetic meta-analysis

(2013) A. V. Jaeggi et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

The relative prevalence of direct, indirect and generalized reciprocity in macaque grooming exchanges

(2012) Bonaventura Majolo et al.   ANIMAL BEHAVIOUR

Direct and indirect reputation formation in nonhuman great apes (Pan paniscus, Pan troglodytes, Gorilla gorilla, Pongo pygmaeus) and human children (Homo sapiens).

(2012) Esther Herrmann et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY

Five-Year Olds, but Not Chimpanzees, Attempt to Manage Their Reputations

(2012) Jan M. Engelmann et al.   PLoS One

When females trade grooming for grooming: testing partner control and partner choice models of cooperation in two primate species

(2011) Cécile Fruteau et al.   ANIMAL BEHAVIOUR

Social bonds predict future cooperation in male Barbary macaques, Macaca sylvanus

(2011) Andreas Berghänel et al.   ANIMAL BEHAVIOUR

The Evolutionary Origins of Friendship

(2011) Robert M. Seyfarth et al.   Annual Review of Psychology

Reciprocity and trades in wild West African chimpanzees

(2011) Cristina M. Gomes et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Cleaner Wrasses Labroides dimidiatus Are More Cooperative in the Presence of an Audience

(2011) Ana Pinto et al.   CURRENT BIOLOGY

How feeding competition determines female chimpanzee gregariousness and ranging in the Taï National Park, Côte d'Ivoire

(2010) Julia Riedel et al.   AMERICAN JOURNAL OF PRIMATOLOGY

Grooming reciprocity in wild male chimpanzees

(2010) Nicholas E. Newton-Fisher et al.   ANIMAL BEHAVIOUR

Infant access and handling in sooty mangabeys and vervet monkeys

(2010) Cécile Fruteau et al.   ANIMAL BEHAVIOUR

Trade-offs in primate grooming reciprocation: testing behavioural flexibility and correlated evolution

(2010) GABRIELE SCHINO et al.   BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY

Social Bonds Enhance Reproductive Success in Male Macaques

(2010) Oliver Schülke et al.   CURRENT BIOLOGY

Simple means to improve the interpretability of regression coefficients

(2010) Holger Schielzeth   Methods in Ecology and Evolution

Male chimpanzees form enduring and equitable social bonds

(2009) John C. Mitani   ANIMAL BEHAVIOUR

Cooperation between non-kin in animal societies

(2009) Tim Clutton-Brock   NATURE

Supply and demand determine the market value of food providers in wild vervet monkeys

(2009) C. Fruteau et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Emergent Patterns of Social Affiliation in Primates, a Model

(2009) Ivan Puga-Gonzalez et al.   PLoS Computational Biology

Information gathering and decision making about resource value in animal contests

(2008) Gareth Arnott et al.   ANIMAL BEHAVIOUR

Sociality of the dispersing sex: the nature of social bonds in West African female chimpanzees, Pan troglodytes

(2008) Julia Lehmann et al.   ANIMAL BEHAVIOUR

Female reproductive synchrony predicts skewed paternity across primates

(2008) Julia Ostner et al.   BEHAVIORAL ECOLOGY

Conclusions beyond support: overconfident estimates in mixed models

(2008) H. Schielzeth et al.   BEHAVIORAL ECOLOGY

Fission-Fusion Dynamics, Behavioral Flexibility, and Inhibitory Control in Primates

(2008) Federica Amici et al.   CURRENT BIOLOGY

Focused grooming networks and stress alleviation in wild female baboons

(2008) Roman M. Wittig et al.   HORMONES AND BEHAVIOR

Sexual Differences in Chimpanzee Sociality

(2008) Julia Lehmann et al.   INTERNATIONAL JOURNAL OF PRIMATOLOGY

Mixed-effects modeling with crossed random effects for subjects and items

(2008) R.H. Baayen et al.   JOURNAL OF MEMORY AND LANGUAGE

Duration and outcome of intergroup conflict influences intragroup affiliative behaviour

(2008) A. N Radford   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Long-term reciprocation of grooming in wild West African chimpanzees

(2008) C. M Gomes et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES