Common reactions: delight, active laughter, wariness12
Vocalizes moods, enjoyment, indecision, and protest14
Laughs while socializing14
Wails if play is disrupted14
Shows anticipation, excites, breathes heavily14
Attempts to soothe self14
Quieted by music14
Interested in and may smile at own mirror image14
Vocalizes to initiate socializing: coughs or clicks tongue14
Responds to and enjoys being handled14
Laughs while socializing; expresses delight; recognizes mother
Interested in mirror image
Laughs in anticipation of games such as peek a boo
Vocalizes to initiate socializing and enjoys being handled