Table 3. Statistical results of the generalized linear mixed model (GLMM) to determine possible influences on the performance in the recognition task.

Fixed term	Full fixed model			Final Model
	Wald statistics	ndf	p	Wald statistics	ndf	p
Sex focal	1.57	1	0.241	1.94	1	0.190
Same vs. mixed sex target groups	0.02	1	0.878	0.32	1	0.582
Genetic vs. non-genetic target groups	0.67	1	0.434	0.51	1	0.489
Family group (A–C)	1.47	2	0.504	9.08	2	0.032

The binomial response variable was correct/wrong choice in the ultimate 32 trials of the 15 focal individuals. For the full model, results of all tested fixed terms are given. For the final model, results of terms that remained in the final model are given in bold, and results of excluded terms when individually re-entered into the final model are given in italics.