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Bridging the bonding gap: the transition from primates to humans
Abstract
Primate societies are characterized by bonded social relationships of a kind that are rare in other mammal taxa. These bonded relationships, which provide the basis for coalitions, are underpinned by an endorphin mechanism mediated by social grooming. However, bonded relationships of this kind impose constraints on the size of social groups that are possible. When ecological pressures have demanded larger groups, primates have had to evolve new mechanisms to facilitate bonding. This has involved increasing the size of vocal and visual communication repertoires, increasing the time devoted to social interaction and developing a capacity to manage two-tier social relationships (strong and weak ties). I consider the implications of these constraints for the evolution of human social communities and argue that laughter was an early evolutionary innovation that helped bridge the bonding gap between the group sizes characteristic of chimpanzees and australopithecines and those in later hominins.
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“I have suggested elsewhere that laughter (as a form of wordless, amusical chorusing) evolved very early during human evolution as a way of increasing the size of the grooming group (Dunbar, 2012a).”
From Group size, vocal grooming and the origins of language (2017) · cites this paper as Dunbar, 2012a
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Sorted by citations
Music and social bonding: “self-other†merging and neurohormonal mechanisms
Tarr, B., Launay, J., & Dunbar, R. I. M. (2014) · Frontiers in Psychology · doi:10.3389/fpsyg.2014.01096 · Cited by 548
Self-citationThe ice-breaker effect: Singing mediates fast social bonding
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Self-citationSocial Laughter Triggers Endogenous Opioid Release in Humans
Manninen, S., Tuominen, L., Dunbar, R. I., Karjalainen, T., Hirvonen, J., Arponen, E., Hari, R., Jääskeläinen, I. P., Sams, M., & Nummenmaa, L. (2017) · The Journal of Neuroscience · doi:10.1523/jneurosci.0688-16.2017 · Cited by 213
Self-citationSocial cognition on the Internet: testing constraints on social network size
Dunbar, R. I. M. (2012) · Philosophical Transactions of the Royal Society B: Biological Sciences · doi:10.1098/rstb.2012.0121 · Cited by 148
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Metadata
- Authors
- Dunbar, R. I. M.
- Venue
- Philosophical Transactions of the Royal Society B: Biological Sciences
- Publisher
- The Royal Society
- Published
- 2012-07-05
- Volume
- 367
- Issue
- 1597
- Pages
- 1837-1846
- ISSN
- 0962-8436
- 1471-2970
- Cited by
- 176
- References
- 9
- Language
- en
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