Table 4.

Fixed effects, random effects and outcome variable used in our models

Fixed effects
Age	Age (years) of the individual at the time of a given experimental condition
Sex	Sex of the individual
Rearing	Whether individual was captive-born and mother-reared, captive-born and nursery-reared, or wild born
Experience	The number of experimental conditions which the individual had participated in prior to the study in question
Random effects
Individual identity	Identity code corresponding to each unique individual in the sample, to control for multiple observations and calculate repeatability
Pedigree	An individual’s parentage, if known. Used to estimate heritability of SIS
Condition	The experimental condition (N = 26) the data point was taken from
Outcome
SIS	A binary measure of social learning for a given experimental condition