In some cases, the monkey that was not being treated equally would pay its plastic
chip but refuse to accept the cucumber. Sometimes it would refuse to pay and would
stop participating in the experiment. “Refusing a food item of any type is very rare
5 behavior in a capuchin,” Brosnan says. In more extreme cases, when one capuchin
saw the other receive a grape for freeー without having to pay the chip
the
unfairly treated capuchin would throw away its cucumber although it had paid for it.
