Monkey Helps Relatives and Friends, So Do You
Capuchin monkeys try to choose options that get food for others. When they are paired with relative or friend, the monkeys choose double reward “prosocial” choice than ” Self-fish” choice. But when it comes to strangers, they choose “self-fish” option. In the study monkeys were given tokens to exchange for food. One token got them a slice of apple. The other also got an apple slice, plus a similar slice to another monkey. When it comes to partner or familiar monkey from the same social group, the one choosing the token moved closer to the other monkey and choose the token that got them both food. But when the other monkey was a stranger, they choose selfish token to get food just for them.
Female Domination
Male domination is common among primates including monkeys. But when the number of males increases, females become more strong and dominant. According to researchers, this new finding could true with humans. Male primates are usually larger than females, and it is easier for them to be stronger. But there are times where females dominate, for instance lemurs in Madagascar and macaques.
Findings support that these females are not larger than males, but they dominate due to odds. Chances of wining a fight by a female increases when male aggression is more intense and more males are defeated by other males. Therefore high-ranking females may be victorious over these losers. When females win a fight by chance, they grow more confident and win more fights, and eventually they dominate.
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Monkey Voice
Amazingly, part of monkey’s brain is specialized for selective listening to the voices of other monkeys. The finding should pave the way for studies on the neural basis of voice recognition. It will help shed light on how the human brain changed as speech and language evolved.
Photo Source : www.hedweb.com
