Table 3. Factor loadings of the response measures on the first (PC1) and second (PC2) principal component in playback experiment. Variance explained by the PC scores is given in parentheses.

Response measures	PC1 (55.3%)	PC2 (22.9%)
Total duration of movements	0.4282	0.1493
Latency before the first movement	−0.3758	−0.1596
Latency to approach at less than 10 m	−0.4233	0.1912
Latency to approach at less than 5 m	−0.3875	0.3437
Duration of movements between 10 and 5 m	0.3330	−0.3368
Duration of movements between 5 and 0 m	0.3516	−0.1638
Latency before the first song	−0.2773	−0.5196
Duration of songs	0.1862	0.6224