In these months your toddler will be paying attention to words—in the languages he hears most: apple, bubbles, rice cooker. He’ll listen, begin to understand, then start to talk. At first you may not understand the sounds he makes, but listen—and you’ll hear his first word. It’s an exciting time.
The greater the number of words children heard from their parents or caregivers before they were three, the higher their IQ and the better they do in school. Listening to language on the TV doesn’t help your toddler build his own language and it may actually limit his language. (HART & RISLEY, 1995)