Sorry, that was unclear: the study I was thinking of specifically looked at giving poor families children's books and founded a measurable improvement in Englis

Sorry, that was unclear: the study I was thinking of specifically looked at giving poor families children's books and founded a measurable improvement in English skills. Of course access to a library that is open when a parent doesn't have to work, the time and energy to read to children and many other factors also play a role in early exposure to literacy.