This quote from Time magazines sums up the book well: “Until recently, there have been two groups of people: those who argue sex differences are innate and should be embraced and those who insist that they are learned and should be eliminated by changing the environment. Sax is one of the few in the middle—convinced that boys and girls are innately different and that we must change the environment so differences don’t become limitations.”
This is the latest edition & has material not found in the first. It includes 3 chapters which he says should be read as a unit on differences in gender identity & such. The appendix are worth reading, too. He's a bit repetitive, but very clear & backs up his opinions with studies as well as over 30 years of practice in the field. (He says so way too often!) Still, I highly recommend this in any format.
Update: After reading a number of reviews that I thought were wildly incorrect about this book, I found a 2005 edition in ebook format & there are a number of differences. For instance, reviews mentioned that he advocated spanking a child & single-sex schools. There was nothing like that in my 2017 edition, but there is in the 2005 edition. He didn't mention that he changed his opinions at all in my edition. I wish he had. It's fine to change opinions, but they should be acknowledged. Definitely get the 2017 edition of this book.
This is REALLY important for all teachers & parents to read, especially with the prevailing PC notion that gender is cultural. It's not, at least not fully. Culture extends biology. Male & female brains start out the same but develop differently when the first dose of testosterone is generated in the 7 week old fetus. As we age, after puberty, the differences decrease. They're huge in younger children, so teaching (both in school & at home) really has to be geared to the sex of the child. Boys often feel stupid in kindergarten as they're not ready to learn what used to be the first grade curriculum yet while girls are. It's often better to keep the boys in preschool another year. Girls were more engaged by physics if it was taught addressing the 'why', such with the wave/particle duality of light section first rather than the typical way of 'what', the kinetics (actions) which hooks the boys. Failure to engage the child means they lose interest & motivation.
We raised 2 boys & a girl (as well as many semi-fosters that still call us Dad & Mom) & I am impressed that Sax put into words & explained so many things I was unable to articulate or fully realize that drove me crazy with the gender neutral ideas that the schools had. I was terribly frustrated by the stupid 'no tolerance' policies of the schools around the 90s & I'm horrified that they've gotten even worse. Boys engage in riskier behavior, interact, & play far differently than girls. Boys roughhousing is natural & tends to bond them, just the opposite of girls. By insisting that gender differences are cultural rather than partially innate, the PC crowd is causing stereotypes as bad or even worse than the ones it is trying to dismiss & Sax shows how. We're also not replacing the underlying morality that accompanied the 'lady' & 'gentleman' with other examples, a huge oversight.
Of course, the difference between the sexes is not a single dimension absolute, it's a range that is indicative. Each kid needs their own special blend of parenting in discipline, motivation, & more. In my family, both sexes work & play hard without regard to their sex, just personal preference. Both sexes had complete toolboxes & the knowledge to use them before they left home. They could also cook, clean, & sew. I did all the sewing for the kids while my wife & mother worked with horses, mostly racing Thoroughbreds which are tough & aggressive. Still, the girls don't like loud machinery & toys while the boys reveled in them. Still, one boy was quiet & studious while the other was the wild, stereotypical monster. A harsh word was all the discipline the first needed while I sometimes thought a baseball bat wouldn't get through to the other.
According to Sax & studies that he cites, generally girls & boys see, hear, & smell differently. Girls tend to draw in many colors & tend to draw things. Boys use fewer colors & tend to draw action. Females have almost twice as much of their brain devoted to smelling than males. Boys don't hear as well, so a teacher generally has to speak about 8 decibles louder for them while fathers often have to make an effort not to speak so loudly to their teenage girls or else they seem to be shouting. (I asked my daughter & was told "Yes!" emphatically.)
One study found that women straight out of college made about 8% less than men for the same jobs (about $4500). Another found that only 7% of the women asked for more money at the initial interview while 57% of the men did & it earned them more (about $4500). Asking for more money is aggressive, risky behavior. Male primates (from monkeys to humans) are 10 times as likely to engage in risky behavior. Sax gives wonderful examples of how to deal with all of this & not reinforce negatives. I wish I'd read it way back when, but much of the data wasn't even available for the first edition of this book. (Again, read the latest edition!)
His take on violent video games was interesting, although it seemed a bit alarmist to me. Still, my experience with them & my boys was before they were so immersive. My kids also never had the option to sit inside & play them for too long. They had a lot of outdoor activities & chores. He's spot on about keeping computers out of kids' rooms & in a common area. Both sexes had issues, but especially the girl with social media. We caught on & pulled her computer. There was a huge, positive change in her attitude & grades.
He lists quite a few differences in the subjects of sex & alcohol. One was that MRIs have shown that females use more of the frontal cortex when aroused than men. In men, higher thinking often shuts down, which is in line with Robin Williams' assertion, "God gave man a brain and a penis and only enough blood to run one at a time." I had no idea that alcohol had so much more of a bad effect on female brains, either.
He presents homosexuality really well using the example of left-handedness. Less than a century ago, even that was thought to be a preference & teachers tried to force students to write right-handed. He also delves into atypical sexual roles in a great way & shows how moral judgements of such are parochial. One example is the morality of drinking alcohol, moral for most, not for Muslims & Mormons.
Sax doesn't advocate single sex schools in this edition. He specifically says not in the appendix. He does use many as examples, though. Early on, I had the impression he really liked them, but now he seems to think that just some subjects should be sex segregated & his opinions made sense to me.
He makes a great case for why gender does matter, but also discusses the outliers including gender reassignment with common sense approaches. I have no experience to guide me there, but he always stressed loving the child & that's what it's all about.