Figure 3.

Behavioral (A–C) and vocal (D,E) responses to the Isolation/Reunion test. Mean (±se) of behavioral and acoustic scores, according to the stimulus (Human = dark blue circles, Object = light blue squares, No stimulus = gray stars), the phase of the test (Isolation = empty symbols or Reunion = filled symbols) and/or the day of the test (day 1, 2, or 3). (A–C) significant interaction between the type of reunion and the phase of the test for the three behavioral response scores IsoReuPC1, IsoReuPC2, IsoReuPC3, respectively. (D,E) significant interaction between the type of reunion and the phase of the test for the two acoustic scores: the acoustic spectral score (D) and the logarithm of grunt duration (E). Different letters show significantly different groups (p < 0.05). All model estimates, anova tables, and results of post hoc tests are available in Supplementary Tables 4–6. Description of each behavioral and each acoustic parameter depending on experimental conditions is available in Supplementary Tables 2, 3, respectively.