Table 3 List of the human and macaque infant behaviours coded.
Infant behaviours | |
|---|---|
Human subjects | Rhesus macaques |
Proto-communicative mouth gestures Tongue protrusion Mouth opening | Proto-communicative mouth gestures Tongue protrusion Mouth opening |
Affiliative gestures (i.e., smiles) | Affiliative gestures (i.e., lip-smacking) |
Neutral-Positive vocalisations | Neutral-Positive vocalisations |
Non-social mouth movements | Non-social mouth movements |
Negative vocalisations | Negative vocalisations |
Negative expressions | – |
Negative mouth movements | – |
