Consider these two sentences from Michaela:
A) Age 4 years: "I miss you, Nana!" (spoken over the phone to her grandmother who had returned home after a visit).
B) Age 4 years, 6 months: "I'm going to miss you, Nana" (spoken in person to her grandmother who was preparing to leave Michaela 's house to return to her own home).
What cognitive understandings lie behind Michaela's first utterance (a)? In other words, what kinds of things does she know and understand in order to produce this sentence appropriately? Now, look at the second utterance (b). What additional cognition is revealed? What kind of linguistic growth is evident?
2 answers
Age 4: I miss you, Nana! Behind Michaela's cognitive understanding of her first utterance; she understand some basic rules of grammar. Age 4 yrs., 6 months: I am going to miss you Nana. Michaela is using longer sentences. What additional cognition is revealed. It revealed that her cognition development is advancing quickly. What kind of linguistic growth is evident? Michaela is able to deal more with complex thoughts and relationships.
She is also expressing the future.