I have been looking at some other threads and thinking about research in this area and it has raised this question in my mind:
When it is said, as it frequently is, that social class/parental job etc, have a huge impact on the development and academic success of children, is this a passive or an active effect?
In other words, does growing up in a household in which books are read and discussed frequently, interesting outings take place and are discussed etc etc benefit dc, or is it the case that these kind of families do more of the active stuff - flashcards, tutors, workbooks etc?