I'm halfway through this book and it just showed up an hour and a half ago. Fast read.
OK, what I've learned:
1. Don't overpraise.
2. Kids don't get enough sleep.
3. White parents need to acknowledge racial difference instead of refusing to talk about it.
4. Kids lie a lot. They do it to avoid punishment/disapproval. They will tell the truth more if there is no threat of punishment/disapproval.
5. IQ tests are not predictive. NYC schools make decisions on gifted and talented placement for kids based on one single IQ test administered at the age of 5. This sucks for the late bloomers.
6. Siblings fight not because they resent the other taking away a parent's attention. They fight over toys. Fighting is ok so long as they have more net positive interactions.
7. Teenagers lie because they don't want to disappoint their parents and because they're practically programmed to. When teens argue with you, it's a good thing. They're negotiating, and when they negotiate, they feel that rules exist but that their parents are being reasonably flexible, and they are less likely to lie.
It's all very interesting to read, but I don't feel like there's a huge lot of there there. However, the endnotes are extensive and probably full of supporting info/evidence.