This behavior is seen as Sarah Brosnan and Frans de Waal conducted a stu

This behavior is seen as Sarah Brosnan and Frans de Waal conducted a study, it is studied. They look very cute, docile personality, cooperation, willing to share food.
The most important thing is, as women, they are often more concerned than the male Brosnan and de Waal ideal object of study. The researchers took two years to teach the monkeys to use tokens in exchange for food. Normally, the monkeys are willing to exchange a few slices Herve Leger of cucumber stones. However, when two monkeys were placed in separate but adjacent two rooms, each able to see each other with stones in return something, it will change the behavior of monkeys significantly different. .Capuchin monkey in the world, the grape is a luxury (much more popular than the cucumber). So when a monkey in exchange for a token with a grape, the second monkey does not want their tokens in exchange for a cucumber. If no need to use on behalf of a monkey currency will be able to get a grape, then another one will be thrown researchers tokens outside the room or throw, or refuse to accept that piece of cucumber.