Responds selectively to the emotional tones of parents' voices. Smiles, laughs and squeals. Explores with head and eyes. Turns head to parent's voice, even if across the room. Babbles using single and repetitive syllables.
Eyes follow activities from one side to the other.
Both eyes move in unison. Reaches with two hands for objects up to one foot away. Transfers objects from one hand to the other. Kicks alternately with both legs. Pulls self up from back-lying when hands are grasped.