You should check out '30 million words'. It's a book about the importance of spoken language on young minds, and books may be a means. Fascinating data in it.
Before I invest the time.and money in buying a book. How did they deal with the confounds? And was there a study on the intervention you could point me to?
Reading the summary of the book on Amazon, the experiments looked pretty confounded and it didn't mention any successful interventions.
Reading the summary of the book on Amazon, the experiments looked pretty confounded and it didn't mention any successful interventions.