TITLE: The Meaning of an Expression [Description] Autumn, sits down at a cafeteria table. She is holding two stuffed dolls, Snoopy and Mickey Mouse as she rocks back and forth in her chair. Her intervener, sets two cartons of milk and a straw on a table to the left of Autumn. She pats Autumn on her left shoulder. FEMALE SPEAKER: Here you go. Here's your milk. On Screen text: Autumn expresses: she leans towards the intervener, smiles and brings her hand up to her nose Description: The intervener affirms Autumn's expression by leaning over and making sounds near Autumn's ear before walking away to remove her coat. On Screen text: The intervener affirm's Autumn's expression [Description] Autumn picks up Mickey, rocks back and forth, and plays with the straw. On Screen text: Autumn touches (points at) and attends to the straw... She will use it AND it is an object of reference used to announce the lunch room. She smiles; is she looking forward to drinking the milk? [Description] She rocks back and forth in her chair. On Screen text: A big smile and tap on the nose: she might be reminiscing about or anticipating her intervener. [Description] Her intervener arrives back at the table and taps her on her nose. On Screen text: The intervener affirms the gesture by tapping on Autumn's nose, meaning "Here I am!" Observe both smiling and the conversation that unfolds. [Description] Autumn vocalizes and her intervener repeats the vocalization.