The Old Way, by Elizabeth Marshall Thomas, about living with indigenous people in Namibia in the 1950s. Anthropology, narrated by the author, which I enjoyed; not all authors are great at reading their work, but this instance felt right.
If you're interested in how ancient humans lived, I recommend "The Old Way: A Story of the First People" by Elizabeth Marshall Thomas, who lived among the hunter-gatherers of the Kalahari. It has a nice mix of information, narrative, and hypothesis. Grass beds are one of the first things she talks about.
An old guy's perspective: It's not this or that lesson or parental intent that matters, it's the sheer amount of one-on-one interaction with the parent(s), that matters most. IIRC, that's about twenty minutes a week for most kids. Nomads (See the book The Old Way by Elizabeth Marshal Thomas) don't have the same behavior problems at all; but the kids are getting an incredibly high amount of one on one interactions with their parents (mother in particular, while gathering, say berries, with them.)