The traditional view of the sexes holds up much better when rigorously examining the brains of men and women, and the role hormones (endocrinology) play in both wiring the brain in utero and in forging the adolescent personality, than the heavily ideological view of the "genders" being culturally constructed, except for the obvious genital differences, that is au courant at the typical university campus.

A recent BBC News health feature reporting on a Swedish study in 2008 using 90 brain scans shows that brain structure truly does matter. The lesbians have masculine brains and the gays have brains more closely resembling women's in structure.

See, it's just amazing how well this book has held up all these years.

Raising both boys and a girl, I realize the differences start at a truly young age, before the environmental influence could become operative.

It isn't a surprise that men and women are really different creatures. This book does not portray either men or women in a lesser light, but the book asks us to really look at the chemistry and the wiring of the brain that makes us different creatures with different outlooks. This book may help set your mind as ease with characteristics that the opposite sex has that drives a person stark raving man.

From the womb we have different hormones that wash our developing bodies and make real changes in our mental development. Men are better at single tasks that are spacially related women are more atune and able to handle multitasking, and many desire to create a nurturing environment from day one. Even in gender neutral settings these differences continue to polarize men and women.

Rather than trying to make each person fit a mold, this book suggests that we should cater to the differences that we have and find more fulfilling roles for ourselves. I especially enjoyed learning the explanation why women feel a floor is dirty long before it can support commerical agriculture. This book is a must read!

"Brain Sex", while having nothing to do with sex is loaded with cutting-edge research on the phenomenal differences between the female brain and the male brain. It will boggle your mind and impress you with the well-documented and exhaustive studies that have made this knowledge available to the average man/woman on the street. Written in laymens' terms, you cannot put the book down. Tidbits from the book include the fact that not only is gender determined in the womb, but so is sexual orientation, putting that worn-out debate to rest for good. I highly recommend it and am buying several copies for friends and family. A MUST read!

A lot of people compare this book to "Sperm Wars" by Robin Baker. However, this book touches upon an entirely different subject: Brain gender.

"Brain Sex" goes in depth to describe how the brain is pre-wired before birth to either be male or female, despite the sex of the body that the brain is in. The book discusses how/why people are homosexual or straight.

It also describes the benefits and drawbacks of a female brain versus a male brain. While some of the writing is only theory based, most of the text has been proven.

I highly recommend this book to anyone who thinks that homosexuality is merely a choice that someone makes. Are there still people out there that believe that?

I was given this book by my son. It was part of his curriculum in a psychology class at Vanderbilt University.

I have been reading it from the middle.....out. Although I am a 60 year old, white, heterosexual female, brought up as a Christian....I have for many years been confused, hurt and angry over the moral/legal/religious judgements our society is making over the issues facing us about homosexuals.

I checked the index and immediately read that part of the book. I really hope that understanding science will help us appreciate differences.

No matter how you fall out, it's fascinating and educational.

It is a totally worthwhile read.