survey about observations of polyadic grooming in primate species

Abstract. Cultural transmission across generations is key to cumulative cultural evolution. While several mechanisms—such as vertical, horizontal, and obli

Thumbs and brains coevolved in primates. Across living and extinct species, longer thumbs predict bigger brains, highlighting the neural cost of dexterity.

Long-term standardized data collection on wild western chimpanzees reveals late-life changes in stone tool use, and the extent of these changes varies between individuals.

In humans and other social mammals, more socially connected females often have higher fitness. Yet evidence linking female sociality to offspring surv…

Dans une étude publiée dans Nature Human Behaviour des scientifiques ont id

This study of 50 wild Western chimpanzee mother–offspring dyads revealed no evidence of disorganized attachment. Instead, offspring exhibited secure-like and insecure avoidant-like behaviours during t...

Social attention patterns suggest that wild chimpanzees learn from their mothers but also from many other tolerant group members across protracted development. This likely enables chimpanzees to learn...

Male chimpanzees in Côte d’Ivoire’s Taï National Park use distinct “auditory gestures” to attract females. However, researchers have found that when the males die, these behaviors can disappear with t...