Table 2.

Model ranking for hypotheses testing whether selection shapes the genetic correlation between handling aggression and breathing rate across development. Each hypothesis specifies a certain combination of constraints (or not) on the genetic correlation in nestlings which have recruited, in nestlings which have not recruited and in adults. The genetic correlations were constrained to the same value (S) or were independent (I). Models are sorted by ascending order of AIC, and ΔAIC is the difference between the AIC of each model and AIC of the top model.

hypothesis	recruited/not recruited/adults	log(L)	K	AIC	ΔAIC	support
no selection	S/S/I	−411.850	2	827.7	0	0.46
selection	S/I/S	−412.704	2	829.4	1.71	0.20
all different	I/I/I	−411.758	3	829.5	1.82	0.19
all the same	S/S/S	−413.953	1	829.9	2.21	0.15