Nursery sounds are the sounds that babies and young children make, often in response to their environment. The term 'nursery sounds' can refer to a variety of noises, including WAILS, goos, DADA, and dadas. WAILS are loud, high-pitched cries that babies make when they are distressed or uncomfortable. Goos are cooing sounds that babies make when they are content or happy. DADA is a sound that babies make when they are trying to imitate the sound of their parents' voices. Dadas are similar to DADA, but are more drawn out and prolonged.