… , such as unequal pay for equal work. … monkeys—whether they pay attention to what others
get, what they find unfair, how these responses depend on relationships, and how monkey …

… successive negative contrast in capuchin monkeys, evidence obtained in a procedure that
properly controls for competing factors such as unequal reinforcement between subjects and …

… Humans have a strong sense of fairness and are usually averse to unequal treatment for the
same action. Ever since Brosnan and de Waal showed a similar effect in capuchin monkeys …

… Following completion of the first study, we noticed what appeared to be an effect of exposure
to rewards, with a few monkeys rejecting specific rewards or … Monkeys reject unequal pay …

… It is possible that our larger variety of unequal situations revealed in squirrel monkeys a
potential form of IA that depends on sex, the social relationships, and the type of inequity. As this …

… Protest in response to unequal reward distribution is thought to … of this discontent away
from the unequal reward, to the human … We tested 12 monkeys in a novel ‘inequity aversion’ …

Though understanding what monkeys see and know without inferring anthropomorphically
is virtually impossible, the more detail and concrete the ground of this inference we have, the …

… that capuchin monkeys (Cebus apella) demonstrate a sense of fairness by rejecting unequal
… The capuchin monkeys may have rejected the cucumber (one of the food types) because …

… In the current study, we chose to examine unequal reward … an unequal reward distribution
with two chimpanzees receiving more rewards than the third. As stated above, an unequal …

… are averse toward unequal distributions of resources. Over the past two decades, researchers
have reported that species across a wide range of taxa object to unequal treatment. These …