Women talk more than men, and they like the sound of their own voices, according to Dr Luan Brizendine, author of In The Female Mind.
It is something one half of the population has long suspected - and the other half always vocally denied. Women really do talk more than men.
In fact, women talk almost three times as much as men, with the average woman chalking up 20,000 words in a day - 13,000 more than the average man.
Women also speak more quickly, devote more brainpower to chit-chat - and actually get a buzz out of hearing their own voices, a new book suggests.
You'll be happy to know evolution is alive and well and compensates accordingly.
Dr Brizendine explains that testosterone also reduces the size of the section of the brain involved in hearing - allowing men to become "deaf" to the most logical of arguments put forward by their wives and girlfriends.
But what the male brain may lack in converstation and emotion, they more than make up with in their ability to think about sex.
Dr Brizendine says the brain's "sex processor" - the areas responsible for sexual thoughts - is twice as big as in men than in women, perhaps explaining why men are stereotyped as having sex on the mind.
And where science leads us into areas that politics fears to tread:
Dr Brizendine, whose book is based on her own clinical work and analyses of more than 1,000 scientific studies, added: "There is no unisex brain.
"Girls arrive already wired as girls, and boys arrive already wired as boys. Their brains are different by the time they're born, and their brains are what drive their impulses, values and their very reality.
"I know it is not politically correct to say this but I've been torn for years between my politics and what science is telling us.
"I believe women actually perceive the world differently from men."
Women talk more than men, and they like the sound of their own voices, according to Dr Luan Brizendine, author of In The Female Mind.
