Table 1.

Chimpanzee choices of equitable token by pair

Pair	Preference test (%)	UG (%)
KT–GA	13*	58†
LA–SH	0*	71*,†
MS–RT	17*	67†
SH–LA	14*	92*,†

All chimpanzee pairs showed a significant change in token choice from the preference test. Additionally, two pairs were significantly different from chance in the UG.

*Significant difference from 50% chance; binomial test, P < 0.05.

^†Significant change between preference test and UG; McNemar’s test, P < 0.05.