I put my 25-year-old on her tummy. It was just sort of conventional wisdom that many/most babies preferred belly sleeping; it's how they were positioned in the hospital nursery, for example. I wasn't instructed to do so, though; I was encouraged to position her however she seemed to sleep best.
By the time my almost-18-year-old came along, back/side sleeping was recommended due to the SIDS correlation. I'm not sure it the AAP had yet formally made the recommendation, but I was instructed to position him on his back or side. Which I did, though he preferred his stomach and very quickly managed to get himself there on his own.
I didn't really devote a lot of thought to it; I did what was recommended based on evidence at the time. Based on the really dramatic change in SIDS incidence that has become evident over the years (which was not the case when my son was born and the recommendation was new and many skeptical), I would encourage parents to pay attention to the recommendation (as well as the recommendations regarding bedding and temperature). It's not a hard one to do, and it has effected a significant change.
I missed the changes in child-rearing part, too! I won't speculate on outcome, because the jury's still out. But my parents were not nearly as hands-on as my sibs and I--and their peers were not, either, particularly the men. I lived in a Don and Betty Draper world.
And I can see real differences between me and my older sibs, too. I don't think it would be wise to attribute them wholly to generational differences, as I think other psychosocial influences play in heavily.
I don't really see the same correlation between my generation's parenting and entitlement and other Millennial Kid issues as some others do, but this may be because I grew up in an affluent area where entitlement is nothing new, and raised my kids with far less privilege than I experienced growing up.
I know I had no more sense if what the real world would demand as a young adult as my kids do. I think it's a developmental stage rather than a negative shift in attitude--a stage we tend to forget we passed through, even if on a different time table. (I would argue that college and postgrad education prolong adolescence in this sense--so my just-graduated daughter can't really be compared to me at the same age; she is not in the same place.)
I think, too, that beyond nature--that with which we are born or for which we have a predisposition-- and nurture--the conscious and unconscious things we do as parents--there's a whole lot of shit happens that hugely influences child development. My older siblings, for example, entered the work force at a time when the economy was vastly different from when I did; that conferred lasting advantages. Then there are things like health crises, extended families, community differences, etc that have a huge impact.
Our kids are individuals in a world that hugely different for different people. Our input is crucial--but only a piece of the puzzle. And thank God for that, because if that weren't the case, few of us would be up to the task!
[This message edited by solus sto at 1:06 PM, July 12th (Saturday)]