when you read that link about faq w/the duggars, michelle duggar states that she spends a lot of time with the older children, reviewing and expounding on the lessons they've learned.
that alone (especially in Biblical context) makes for a lot of meaningful conversation.
and just by virtue of being together 24/7, would expose them all to continuous contact.
she also hopes that by teaching her kids to treat others as they would want to be treated, this will prepare them in getting along w/others later in life.
it sounds like she has all her ducks in a row.
granted, this is not the norm and not a conventional/traditional american family.
but from the bottom of my heart, i do believe they are raising their children to be of tremendous value to themselves, ea other and to society.
i honestly don't know of many normal-sized families, who implement these ideals in such a consistent, persistent manner.
they just totally amaze me.
leslie