Women have a basic evolutionary need to voice concerns about others to their peers, a new book has shown.
The desire stems from a deeper need to protect the community they live in.
"One study of gossip showed that gossipers were concerned about women who are bad housekeepers, and women who are bad mothers, and women who are promiscuous."
"Those things are all threats to each woman in a community; therefore they have every good reason to want to talk about those things."
Men however, are more concerned with displaying their strength and showing off to women, by "duel" - bantering and exchanging playful insults among boys.
"Like if two guys, for example, come up to each other, and one of them maybe insults him a little bit about his bulging midriff, or his thinning hair."
"Women would simply never, never, never do that."
The professor argues girls are more likely to comment to friends about another person's appearance rather than tell them to their faces.
They are used to sharing information with each other or "dueting", often finishing each other's sentences as a bonding method.
Locke said: "When women are dueting and trading in intimate disclosures about themselves and their friends, they're fortifying a relationship."
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