Laughter and its role in the evolution of human social bonding
Dunbar, Philosophical Transactions of the Royal Society B 377(1863), 2022, 20210176. Proposes early hominins used laughter, a modified play vocalisation, as chorusing bonding to extend group size beyond grooming; presents evidence laughter triggers the endorphin system; reverse-engineering model places human-like laughter around 2.5 million years ago in Homo.
Dunbar, Philosophical Transactions of the Royal Society B 377(1863), 2022, 20210176. Proposes early hominins used laughter, a modified play vocalisation, as chorusing bonding to extend group size beyond grooming; presents evidence laughter triggers the endorphin system; reverse-engineering model places human-like laughter around 2.5 million years ago in Homo.
Written from the abstract.
What our sources record
Recorded when this source was checked, figures included, with page references and quotation marks removed.
Dunbar, R. I. M. (2022). Laughter and its role in the evolution of human social bonding. Philosophical Transactions of the Royal Society B, 377(1863), 20210176. doi:10.1098/rstb.2021.0176 https://doi.org/10.1098/rstb.2021.0176