. Author manuscript; available in PMC: 2018 Aug 28.

Published in final edited form as: Anim Cogn. 2018 Apr 17;21(4):447–456. doi: 10.1007/s10071-018-1180-4

Table 2. P-values and related parameters for the main effects and interactions on looking time in the spontaneous looking condition.

Factors	df	F	p-value
picture type	3,240	2.893	0.036
sex	1,229	2.153	0.144
breed function	2,239	15.708	< 0.001
skull length	2,254	21.946	< 0.001
picture type*skull length	6,236	2.376	0.03
sex*breed function	2,244	5.5	0.005