ArticleNature human behaviour2025
Reliable long-term individual variation in wild chimpanzee technological efficiency.
Article in Nature human behaviour, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Rank and payoff biases influence subject choices in a foraging task among sanctuary chimpanzees (Pan troglodytes).Animal cognition · 2026Article
- Chimpanzee culture beyond the conspicuous: Evidence for broad-scale observational social learning in wild individuals.iScience · 2026Article
- Insect applications to open wounds by chimpanzees in the wild: first insights from East African chimpanzees.Scientific reports · 2025Article
- Article
- Cultural evolution, social ratcheting and the evolution of human division of labour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Article
- The development of social attention in orangutans: Comparing peering behavior in wild and zoo-housed individuals.iScience · 2025Article
- Nonadjacent dependencies and sequential structure of chimpanzee action during a natural tool-use task.PeerJ · 2024Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Variation in the efficiency of extracting calorie-rich and nutrient-dense resources directly impacts energy expenditure and potentially has important repercussions for cultural transmission where social learning strategies are used. Assessing variation in efficiency is key to understanding the evolution of complex behavioural traits in primates. Here we examine evidence for individual-level differences beyond age- and sex-class in non-human primate extractive foraging efficiency. We used 25 years (1992-2017) of video of 21 chimpanzees aged ≥6 years in Bossou, Guinea, to longitudinally investigate individual-level differences in stone tool use efficiency. Data from 3,882 oil-palm nut-cracking bouts from >800 h of observation were collected. We found reliability in relative efficiency across four measures of nut-cracking efficiency, as well as a significant effect of age. Our findings highlight the importance of longitudinal data from long-term field sites when investigating underlying cognitive and behavioural diversity across individual lifespans and between populations.
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Registered trials
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