In a food-sharing experiment, chimpanzee sharing behavior declined from an average of 7.12 out of 9 trials among juveniles to 4.43 among adults.
Sources
- Comparative Cognitive Development (dash.harvard.edu)
- https://www.cell.com/current-biology/fulltext/S0960-9822(09)02141-1 (cell.com)
- https://evolutionaryanthropology.duke.edu/sites/evolutionaryanthropology.duke.edu/files/site-images/bonobos-exhibit-delayed-development-of-social-behavior-and.original.pdf (evolutionaryanthropology.duke.edu)
- https://pubmed.ncbi.nlm.nih.gov/20116251/ (pubmed.ncbi.nlm.nih.gov)
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