But the thing is Lamorna, one of the starting principles in the book is that DCs want to please their parents, it's just that there is a tendency to think "they'll get away with murder given half a chance", "give 'em an inch and they'll take a mile", and one of the points made is that you should try to assume the best intentions rather than the worst with your children and start from that when interpreting behaviour. My parents still talk about how it's a battle of wits with toddlers but actually it was pretty much a battle of wits with me until late teens, mainly because there was never any negotiation. And my parents still joke about my temper, but really it was frustration more than temper. It was 'common sense' to my mother not to let me shave my legs til I was 15 - there was no need, apparently - and to say 'well, if your friends all jumped off a cliff then would you?' or 'well, if they're making fun of you for having hairy legs they're not very good friends, are they?' - not especially helpful or empathetic in my experience! Although doubtless done with good intentions rather than making puberty even more painful than it needed to be. Kohn makes the point about how children have a very strong sense of injustice, and I'd forgotten that but it is absolutely true. Don't get me wrong, I have lots of happy childhood memories but I want it to be less adversarial and more co-operative with my kids - we never really talked about emotions in our house, it was all about behaviour, so I find that part doesn't come naturally to me, and my relationship with my parents even now has a certain distance in that respect.
As for the parenting approach, I don't see the difference between going to a parenting class and reading a parenting book. UP is used generally as a shorthand for a type of parenting. Basically, most parents want their DCs to grow up happy and equipped for life, so any parenting approach is designed around getting the kids to do what you want to achieve that end, but UP is about trying to do it in a less manipulative, and more respectful way as far as possible, rather than the 'adults know best full stop' approach. Some things are non-negotiable, hitting for instance, but I know I spend longer figuring out my DD, and less time saying "oh, don't be so ridiculous" and dismissing their foibles. It takes up a lot more of my time, and I appreciate having the book there as it helps validate my approach as I don't know that I would have enough confidence in my own 'common sense' to raise my children this way without being backed up by something. Not that I run to the book for every parenting decision or treat it as a bible, but it is useful to have it in the background, especially after one of our more trying toddler days.