I don’t know that I personally need a scientific study to tell me growing up surrounded by books was good for me. Granted, I may have created most of the benefit for myself, as I always had many multiples of the number of books the rest of my family had. I am also happy (though not surprised based on some of the “less well-educated” but incredibly smart and well-informed people I know) that having books at home offers as much benefit as higher education in some regards.
Check it out at the Smithsonian! https://www.smithsonianmag.com/…/growing-surrounded…/