This article is interesting, particularly as the topic of LW parenting does come up occasionally.
What the author describes doesn't exactly promote rational thinking in the kids, rather telling them how to win arguments, but there is a degree of evaluation-of-argument in there ("Mary should give you the car because she's a pig?") and it teaches a useful skill early. Rationalists should win after all.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.