3 Works

Beyond the group: how food, mates and group size influence inter-group encounters in wild bonobos

Stefano Lucchesi, Leveda Cheng, Karline Janmaat, Roger Mundry, Anne Pisor & Surbeck Martin
In social-living animals, interactions between groups are frequently agonistic, but they can also be tolerant and even cooperative. Inter-group tolerance and cooperation are regarded as a crucial step in the formation of highly-structured multilevel societies. Behavioral ecological theory suggests that inter-group tolerance and cooperation can emerge either when the costs of hostility outweigh the benefits of exclusive resource access, or when both groups gain fitness benefits through their interactions. However, the factors promoting inter-group tolerance...

Data from: Joint attention skills in wild Arabian babblers (Turdoides squamiceps): a consequence of cooperative breeding?

Yitzchak Ben Mocha, Roger Mundry & Simone Pika
Human cooperation strongly relies on the ability of interlocutors to coordinate each other’s attentional state: joint attention. One predominant hypothesis postulates that this hallmark of the unique cognitive system of humans evolved due to the combination of an ape-like cognitive system and the prosocial motives that facilitate cooperative breeding. Here, we tested this hypothesis by investigating the communicative interactions of a cooperatively breeding bird species, the Arabian babbler (Turdoides squamiceps). The behaviour of twelve wild...

Cultural linkage: the influence of package transmission on cultural dynamics

Justin Yeh, Laurel Fogarty & Anne Kandler
Many cultural traits are not transmitted independently, but together as a package. This can happen because, for example, media may store information together making it more likely to be transmitted together, or through cognitive mechanisms such as causal reasoning. Evolutionary biology suggests that physical linkage of genes (being on the same chromosome) allows neutral and maladaptive genes to spread by hitchhiking on adaptive genes, while the pairwise difference between neutral genes is unaffected. Whether packaging...

Registration Year

  • 2019

Resource Types

  • Dataset


  • Max Planck Institute for Evolutionary Anthropology
  • Max Planck Institute for Ornithology
  • University of Amsterdam
  • Osnabrück University
  • Washington State University