Table A2.

Inter-rater reliability calculated with Spearman correlation. Spearman rho is reported, with p-value in brackets.

Variables	Durations	Frequencies
Overall looking	0.97 [< 0.001]	0.89 [0.001]
Referential looking	0.98 [< 0.001]	0.98 [< 0.001]
Approach latency	1 [< 0.001]	-
Motor diversity	-	0.96 [< 0.001]
Task orientation	0.99 [< 0.001]	0.97 [< 0.001]
Negative valence	1 [< 0.001]	1 [< 0.001]