Table 2.

Model output from all GAMMs analysing behavioural responses in recognition trials with their standard errors, estimates and p-values. Significant p-values (p ≤ 0.05) are indicated in italics.

model: response variable	predictor variables	estimate	standard error	p-value
approaches	manipulation type (saline)	−0.1	0.09	0.1
	meeting type (second)	−0.3	0.1	<0.001
	sex (male)	0.2	0.2	0.5
	time in captivity	−0.02	0.02	0.5
checks	manipulation type (saline)	0.2	0.03	<0.001
	meeting type (second)	−0.2	0.03	<0.001
	sex (male)	−0.01	0.1	0.9
	time in captivity	−0.02	0.007	0.03
aggressive interactions	manipulation type (saline)	0.3	0.05	<0.001
	meeting type (second)	0.03	0.06	0.6
	sex (male)	0.2	0.5	0.7
	time in captivity	−0.1	0.02	<0.001
proximity	manipulation type (saline)	−687.9	240.1	0.005
	meeting type (second)	−141.5	255.8	0.6
	interaction term (manipulation and meeting type)	717.6	362.2	0.05
	sex (male)	−10.03	199.1	0.9
	time in captivity	77.5	39.6	0.06