Table 3 Model selection table for models with the highest support (Δi≦2) investigating calling occurrences, the number of calls per interaction bout, the three PCs, call duration, and the responses to playbacks of defensive calls manipulated in fo and call duration
From: Calls during agonistic interactions vary with arousal and raise audience attention in ravens
Response | Model No. | Fixed factors | AICc | Δi | Relative likelihood | Akaike weight |
Calling propensity | 1 | Level of aggression | 960.4 | 0.0 | 1.0 | 0.50 |
2 | Level of aggression + rank difference | 961.2 | 0.9 | 0.65 | 0.33 | |
Number of calls/bout | 1 | Level of aggression | 528.0 | 0.0 | 1.0 | 0.49 |
2 | Level of aggression + rank difference | 530.1 | 2.0 | 0.36 | 0.18 | |
fo component | 1 | Level of aggression * rank difference | 823.1 | 0.0 | 1.0 | 0.78 |
Amplitude component | 1 | Level of aggression | 635.6 | 0.0 | 1.0 | 0.58 |
Jitter and tonality component | 1 | Rank difference | 987.5 | 0.0 | 1.0 | 0.72 |
Call duration | 1 | Level of aggression * rank difference | −1310.4 | 0.0 | 1.0 | 0.87 |
QAICc | Δi | Relative likelihood | QAkaike weight | |||
Pitch manipulation | 1 | Manipulation type | 37.1 | 0.0 | 1.0 | 0.61 |
Duration manipulation | 1 | Null | 60.2 | 0.0 | 1.0 | 0.72 |