"The children whose parents did not begin speaking seriously to their children until their children could speak at roughly age 12 months, suffered a persistent deficit in intellectual capacity compared to those whose parents were talkative from the beginning."
"You are the most 'significant other' your baby interacts with [in relation to communication.] The way you engage with him or her will determine the path that language development takes in the first vital years." Caroline Bowen
"A child's home and family provide the circumstances for the emergence of language and word learning." Lois Bloom, PhD Columbia University