The ethology of animal emotions: Investigation and interpretation
Palagi, E., Norscia, I.
· 2019
★ NIFPlay Rating: 8
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
Palagi and Norscia's methodological and theoretical account of how to study and interpret emotional expression in non-human animals, with play as a key behavior for understanding positive affect.
