[Music]
frans began the fairness test with the
capuchin monkey
these small clever animals are kept in
large enclosures but for the short
duration of the test they're brought
into a lab each monkey carries out a
simple task and when both get a reward
of cucumber everyone's happy
but watch what happens when the one on
the right
receives of grape instead
grapes are so much better than cucumber
and the one who gets cucumber gets
relief emotionally upset by the fact
that the other one is getting grapes
[Music]
in chimpanzees Cinco actually a little
bit further and gets very close to the
human sense of fairness in that the one
who gets grapes also gets upset
sometimes and the one who gets grapes
sometimes waits till the other one also
gets a grape so that gets very close to
the human sense of fairness so the one
that's getting the better reward refuses
to take the reward until the other
animal is being similarly yea awarded
with the good stuff yeah that's in
chimpanzees there has never been found
in another animal but the chimpanzee
goes much further that they care about
revoir division even if they're on the
better end of the scale