Related milestones

Listens and responds when spoken to

Begins to use consonant sounds in babbling, e.g. “da, da, da”

Uses babbling to get attention

Generally happy when not hungry or tired

Able to calm with rocking, touching, and gentle sounds (at 4-6 months)

Is not upset by everyday sounds

Reacts to sudden noises or sounds

Makes different kinds of sounds to express feelings