Most words spoken to infants are produced in larger units, such as clauses, phrases, and sentences. As such, language learners must recognize words amidst the words that surround them. However, the phonetic forms of words change based on surrounding context. Here, we investigate the effects of a common source of phonetic change--phonological…

This study used three experiments to study whether infant-directed (ID) or adult-directed (AD) speech facilitated the learning of Chinese vocabulary by adults whose native language was English and who had had no prior knowledge of Chinese. Results indicate that ID speech may play a pivotal role in early lexical acquisition. (51 references)…