Problem: How can I make notes with bullet points in this paragraph? Between 10 and 15 months of age, children usually utter their first real words (Hoff, 2014). By the age of 2 years, on average, they can say approximately 900 root words, and by the age of 6 years, their vocabularies have increased to 8,000 words. The number of words children can understand exceeds the number of words they can produce (Bornstein & Hendricks, 2012). How and why children acquire words Anyone who has spent time among young children knows some of the common early words-"mama," "dada," "book," and "doggie!" Words are learned in the course of everyday social exchanges with more competent language users, and children's vocabularies reflect the words used by their parents and in their culture (Hoff, 2014; Song et al., 2012). The words children learn first generally represent people they know-"Daddy," "Mommy," "Auntie," objects they can act on-"shoes," "socks," "toys," and actions they can perform-"walk," "run." And mothers and fathers help the word learning process. When parents use more simplified language or parentese (brief and repeated phrases, high-pitch voice) when talking to their babies, their toddlers produce more words by 24 months (Ramirez-Esparza et al., 2014). Need Assignment Help?