‘Learning language’ considers how babies and toddlers develop language skills by looking at the role of Parentese, otherwise known as infant-directed speech, the importance of sound cues, and the role of gestures. Babies’ brains seem to be primed to pick up language with immense speed. Why do babies appear to have a language learning growth ‘spurt’ at 18 months? How can we explain similiarities of language development across cultures? One reason that babies learn words with apparent ease is that they have conceptual expectations about what people are using certain words for.