Brain system size and adult play in primates: A comparative analysis of the roles of the non-visual neocortex and the amygdala
Pellis, S.M., Iwaniuk, A.N.
· 2007
★ NIFPlay Rating: 7
Rating Scale
10 Rigorous play-specific science
6–9 General biological science
5 Sound play research (uncontrolled)
1–4 Less rigorous / indirect
0 Indirect but high value
Comparative study finding that non-visual neocortex size, but not amygdala size, predicts adult play frequency across primate species, linking brain evolution to playfulness.
